Help please!! and actually try to solve it this is a test and I wanna do good
Answers
Answer:
After doing the math, I came up with B and/or C could be the answer
Related Questions
Write the sentence as an inequality
-
X plus 9 is less than or equal to 5
Answers
x+9 less than equal to 5
The zeros of a function are the values of
for which the function is equal to zero. Enter a number in each blank to make true statements about the function ()=(2−6)(−4)
Answers
1) m(x) = 0 when x = 3, and when x = 4.
2) The graph of m intercepts the x-axis at x = 3, and x = 4.
3) The zeros of m are 3 and 4.
1) m(x) = 0 when x = 3, and when x = 4.
To find the zeros of m(x), we set the function equal to zero and solve for x:
m(x) = 0
(2x - 6)(x - 4) = 0
This equation is equal to zero when either 2x - 6 = 0 or x - 4 = 0.
Solving 2x - 6 = 0 gives x = 3, and solving x - 4 = 0 gives x = 4.
2) The graph of m intercepts the x-axis at x = 3, and x = 4.
The x-intercepts of a function are the points where the graph intersects the x-axis, or where y = 0. So, we can find the x-intercepts of m(x) by setting y = m(x) = 0:
m(x) = 0
(2x - 6)(x - 4) = 0
This equation is equal to zero when either 2x - 6 = 0 or x - 4 = 0.
So, the x-intercepts of m(x) are (3, 0) and (4, 0).
3) The zeros of m are 3 and 4.
The zeros of a function are the values of x for which the function is equal to zero. So, the zeros of m(x) are x = 3 and x = 4.
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The given question is incomplete, the complete question is:
The zeros of a function are the values of x for which the function is equal to zero.
Enter a number in each blank to make true statements about the function m(x)=(2x−6)(x−4).
1)m(x) = 0 when x =__, and when x =___
2) the graph of m intercept the x axis at x = __, and x =___ .
3) zeros of m are ___ and ____?
the shape of the toy is a cylinder of radius 5 cm and height 8 cm on top of a hemisphere of radius 5cm calculate the volume of a toy
Answers
Answer:
889.66 cm^3
Step-by-step explanation:
here's your solution
=> radius of cylinder = 5 cm
=> height of cylinder => 8 cm
=> radius of hemisphere = 5 cm
=> volume of toy = ( vol of cylinder + vol of hemisphere)
=> volume of cylinder = πr^2h
=> putting value , = 22/7*5*5*8
=> volume = 628 cm^3
=> volume of hemisphere = 2/3πr^3
=> putting value , = 2/3*22/7*5^3
=> volume of hemisphere = 261.66 cm^3
=> volume of toy = (628 + 261.66)cm^3
=> volume = 889.66 cm^3
hope it helps
with the new dough, there were 16 complaints out of 340 pizzas. let p1 be the proportion of customer complaints with the old dough and p2 be the proportion of customer complains with the new dough. based on a 95% confidence for the difference of the proportions, what can be concluded?
Answers
The correct answer is:
Reject null hypothesis H0, we cannot conclude the proportion of customer complaints is more for the old dough.
As given in the question,
Let us consider proportion of customer complaints with old dough is p₁
And proportion of complaints with new dough is p₂
Difference in proportion of complaints in old and new dough
= p₁ - p₂
Null hypothesis : H0 : p1 ≥ p2
p₁ - p₂ ≥ 0
Alternative hypothesis : Ha : p1 < p2
p1 - p2 < 0
Let 'x' represents the number of complaints
Sample size = n
Sample proportion = x/n
Old dough:
Number of complains with old dough 'x₁' = 6
Number of pizzas with old dough 'n₁' = 385
p₁ = 6/385
= 0.01558
= 0.016
New dough:
Number of complains with new dough 'x₂' = 16
Number of pizzas with new dough 'n₂' = 340
p₂ = 16/340
= 0.04705
= 0.047
Pooled proportion test:
\(\bar{p}\) = (x₁+ x₂)/(n₁ + n₂)
= (6 + 16)/(385 + 340)
= 0.0303
= 0.03
1 - \(\bar{p}\) = 1 - 0.03
= 0.97
z = (p₁ - p₂)/√\(\bar{p}\)(1 - \(\bar{p}\))(1/n₁ + 1/n₂)
= (0.016 - 0.047)/√(0.03)(0.97)(1/385 + 1/340)
= (-0.031)/ √(0.03)(0.97)(0.0026 + 0.0029)
= - 0.031/√0.00016005
= -0.031 / .01265
= -2.45
It is left tailed test.
p value for the area to the left of the z score using normal distribution table:
p value = 0.007143
Significant level 'α' for 95% confidence level:
= 1 - 0.95
= 0.05
Since 0.05 > 0.0.007143
Reject null hypothesis.
Therefore, reject H0, we cannot conclude the proportion of customer complaints is more for the old dough.
The complete question is :
Paul owns a mobile wood-fired pizza oven operation. A couple of his clients complained about his dough at a recent catering, so he changed his dough to a newer product. Using the old dough, there were 6 complaints out of 385 pizzas. With the new dough, there were 16 complaints out of 340 pizzas. Let p1 be the proportion of customer complaints with the old dough and p2 be the proportion of customer complains with the new dough. Based on a 95% confidence for the difference of the proportions, what can be concluded?
Multiple Choice
A. Reject H0, we can conclude the proportion of customer complaints is more for the old dough
B. Do not reject H0, we cannot conclude the proportion of customer complaints is more for the old dough
C. Do not reject H0, we can conclude the proportion of customer complaints is more for the old dough
D. Reject H0, we cannot conclude the proportion of customer complaints is more for the old dough
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Random samples of players for two types of video games were selected, and the mean number of hours per week spent playing the games was calculated for each group. The sample means were used to construct the 90 percent confidence interval (1.5, 3.8) for the difference in the mean number of hours per week spent playing the games. The maker of one of the video games claims that there is a difference in the population mean number of hours per week spent playing the two games . Is the claim supported by the interval? see pictures for answers A) Yes, because 0 is not contained in the interval. Yes, because the midpoint of the interval is greater than 1. C) Yes, because the margin of error for the estimate is less than 1. D) No, because the margin of error for the estimate is greater than 1. E ) No, because 0 is not contained in the interval.
Answers
The claim made by the maker of one of the video games is not supported by the given confidence interval. The interval (1.5, 3.8) represents the estimated difference in the mean number of hours per week spent playing the two games.
To determine whether the claim is supported or not, we need to examine the interval. Option A states that the claim is supported because 0 is not contained in the interval. However, the interval (-∞, ∞) contains all possible values, including 0. Therefore, option A is incorrect.
Option B, which mentions the midpoint of the interval being greater than 1, is not a valid criterion for evaluating the claim. The midpoint of the interval does not provide any information about the claim itself. Hence, option B is incorrect.
Option C suggests that the claim is supported because the margin of error for the estimate is less than 1. However, the margin of error is not provided in the question. Therefore, option C cannot be determined based on the given information.
Option D states that the margin of error for the estimate is greater than 1, but the margin of error is not given. Without this information, we cannot evaluate option D.
The correct answer is option E: No, because 0 is not contained in the interval. A confidence interval that does not contain 0 suggests that there is a statistically significant difference in the mean number of hours per week spent playing the two games.
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Pablo made a dot plot and histogram to show how many times last month each student in a class
played sports. However, the histogram is incorrect.
Times Played Sports Last Month
10
Times Played Sports Last Month
Number of students
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Number of times
5-9
10-14 15-19
Number of times
Answer the questions to show how Pablo can fix the histogram to match the dot plot.
Answers
Answer:
D
Step-by-step explanation:
Because I know
Answer:
1. The bar interval is correct, the height does not need to be changed.
2. The bar interval is not correct, the height has to change higher by 1.
3. The bar interval is not correct, the height has to change lower by 1.
4. The bar interval is correct, the height does not need to be changed.
I hope this helped
Consider this question:
-2x=x^2-6
1) Rewrite the question by completing the square. Your equation should look like (x+c)^2=d or (x-c)^2=d.
2) What are the solutions to the equation?
Answers
Answer:
see explanation
Step-by-step explanation:
(1)
Given
- 2x = x² - 6 ( subtract x² from both sides )
- x² - 2x = - 6 ( multiply through by - 1 )
x² + 2x = 6
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(1)x + 1 = 6 + 1
(x + 1)² = 7
(2)
Take the square root of both sides
x + 1 = ± \(\sqrt{7}\) ( subtract 1 from both sides )
x = - 1 ± \(\sqrt{7}\)
Solutions are x = - 1 - \(\sqrt{7}\) , x = - 1 + \(\sqrt{7}\)
The sum of three lengths of a fence ranges from 25 to 30 inches. Two side lengths are 9 and 12 inches. If the length of the third side is x inches, write and solve a compound inequality to show the possible lengths of the third side.
4 ≤ x ≤ 9
9 ≤ x ≤ 12
16 ≤ x ≤ 18
25 ≤ x ≤ 30
Answers
A compound inequality which shows the possible lengths of the third side is: A. 4 ≤ x ≤ 9.
What is an inequality?An inequality can be defined as a mathematical relation that compares two (2) or more integers and variables in an equation based on any of the following arguments:
Less than (<).Greater than (>).Less than or equal to (≤).Greater than or equal to (≥).For this word problem, we would model it by this compound inequality:
25 ≤ x + 9 + 12 ≤ 30
25 - 9 - 12 ≤ x
4 ≤ x.
The sum of three lengths of a fence that ranges from 25 to 30 inches would be modeled by this compound inequality:
x + 9 + 12 ≤ 30
x ≤ 30 - 9 - 12
x ≤ 9
Compound inequality = 4 ≤ x ≤ 9.
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If you have 675 cm? of material to make a box with a square bottom and an open top, find the largest possible volume of this box_ base edges = W height h
Answers
The largest possible volume of this box is 1687.5 cm³ with a base edge of 15 cm and a height of 7.5 cm
Let w = length of the base edge
h = height of the box
A box with a square bottom and an open top is to be made from 675 cm² of material. Hence,
675 cm² = w² + 4wh
4wh = 675 cm² - w²
h = (675 cm² - w²)/4w
The volume of the box is the product of the area of the square base and its height. Hence,
V = w²h
Substitute the expression of h to the equation of volume.
V = w²(675 cm² - w²)/4w
V = (675/4)w - (1/4)w³
To obtain the largest volume possible, the first derivative of the volume should be equal to zero.
V'(w) = 0
V = (675/4)w - (1/4)w³
675/4 - (3/4)w² = 0
Simplify and solve for the value of w.
675/4 - (3/4)w² = 0
(3/4)w² = 675/4
w² = 225
w = 15
length of the base edge = 15 cm
Solve for the value of h.
h = (675 cm² - w²)/4w
h = (675 cm² - (15)²)/4(15)
h = 7.5 cm
height of the box = 7.5 cm
Solve for the volume of the box.
V = w²h
V = (15 cm)²(7.5 cm)
V = 1687.5 cm³
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Find the value of 9 in 7582.96.
9
0.9
0.09
90
Answers
use the organizer to determine whether the conclusion is valid. step 1: read the situation. Marcus wants to predict the next student council president. He polls every fourth person from each grade level as they exit the cafeteria. In his poll, 65% chose Sophia. So, Marcus predicts Sophia will win the election. Step 2: Determine the type of the sample taken.
Answers
Answer: representative sample
Find the indicated probability.
An archer is able to hit the bull's-eye 53% of the time. If the archer shoots 10 arrows, what is the probability they get exactly 4 bull's-eyes? Assume each shot is independent of the others.
0.0789
0.0905
0.179
0.821
Answers
Answer:
C) 0.179
Step-by-step explanation:
Since the trials are independent, this is a binomial distribution:
Recall:
Binomial Distribution --> \(P(k)={n\choose k}p^kq^{n-k}\) \(P(k)\) denotes the probability of \(k\) successes in \(n\) independent trials\(p^k\) denotes the probability of success on each of \(k\) trials\(q^{n-k}\) denotes the probability of failure on the remaining \(n-k\) trials\({n\choose k}=\frac{n!}{(n-k)!k!}\) denotes all possible ways to choose \(k\) things out of \(n\) thingsGiven:
\(n=10\)\(k=4\)\(p^k=0.53^4\)\(q^{n-k}=(1-0.53)^{10-4}=0.47^6\)\({n\choose k}={10\choose 4}=\frac{10!}{(10-4)!4!}=210\)Calculate:
\(P(4)=(210)(0.53^4)(0.47^6)=0.1786117069\approx0.179\)Therefore, the probability that the archer will get exactly 4 bull's-eyes with 10 arrows in any order is 0.179
The side length of a cube is 8 cm, and the side length of a smaller cube is 2 cm.
The volume of the larger cube is how many times the volume of the smaller cube?
Answers
Answer:
64 times larger
Step-by-step explanation:
8^3=512
2^3=8
512/8=64
The results from a random sample of 150 students' after-school activities at a school are shown. 68 students prefer soccer. 59 students prefer basketball. 23 students prefer swimming. Part A If there are a total of 500 students in the school, what is the best approximation for how many students in the school prefer basketball? 197 students 197 students 227 students 227 students 295 students 295 students 303 students 303 students
Answers
Answer:
≈ 197 students
Step-by-step explanation:
Let's start by writing what we know.
150 students sampled
68 prefer soccer
59 prefer basketball
23 prefer swimming
Part A
If 59 students prefer basketball out of the 150 students sampled then we divide 59/150 in order to get the percentage of students that prefer basketball.
59/150 ≈ 39.33% Remember this is only a sample of the students so it is approximate.
Now that we have the percentage, we can multiply it by the entire student body to get an approximate number of all students that prefer basketball.
39.33% = .3933
.3933 * 500 = 196.66 ≈ 197 students (because we can't have a partial student we round up)
The best approximation of the number of students in the school who prefer basketball is 197.
What is the percentage?The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
The results from a random sample of 150 students' after-school activities at a school are shown.
68 students prefer soccer. 59 students prefer basketball. 23 students prefer swimming.
The percentage of students who prefer soccer will be
\(\rightarrow \dfrac{68}{150} = \dfrac{34}{75}\)
The percentage of students who prefer basketball will be
\(\rightarrow \dfrac{59}{150}\)
The percentage of students who prefer swimming will be
\(\rightarrow \dfrac{23}{150}\)
If there are a total of 500 students in the school. Then the best approximation for how many students in the school prefer basketball will be
\(\rightarrow \dfrac{59}{150} \times 500 = 196.667 \approx 197\)
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laura graphed the function below y = 1 / 2(One over two)x + 4
if the range of the function is restricted to 2 ≤ y ≤ 6, what is the domain?
Answers
Step-by-step explanation:
y = 0.5x + 4
When y = 2, x = -4. (shown in graph)
When y = 6, x = 4. (shown in graph)
Hence the domain would be -4 <= x <= 4.
Evaluate f(-3) for
f(x) = 3x + 6
Question 1 options:
-3
10
0
30
Answers
Answer:
The answer is -3
Step-by-step explanation:
f(-3)=3(-3)+6
f(-3)=-9+6
f(-3)=-3
Answer:the answer is -3, the first option (top to bottom)
Step-by-step explanation:
Find f(-3) as shown below
the answer is -3, the first option (top to bottom).
HELPPPPPPO‼️‼️‼️
Based on an analysis of the map, what conclusion can be drawn about the slave population in the colonies?
Answers
The slave population is high because of all of the growing crops and they need labor to grow more crops and harvest them. so of course there would be more slaves in those areas, with the most crops. So you can say the slave population in the colonies is high
What is the product of (6x^2 − 8)(9x^2 – x + 1)?
Answers
\((6 {x}^{2} - 8)(9 {x}^{2} - x + 1) \\ 54 {x}^{4} - 6 {x}^{3} + 6 {x}^{2} - 72{x}^{2} + 8x - 8 \\ 54 {x}^{4} - 6 {x}^{3} - 66 {x}^{2} + 8x - 8\)
Hope it helps
please give brainliest
If it wouldn’t bother someone would someone also mind giving me the steps to get the answer?
Answers
Answer:
SA = 10,800 ft²
Step-by-step explanation:
To find the surface area of a rectangular prism, you can use the equation:
SA = 2 ( wl + hl + hw )
SA = surface area of rectangular prism
l = length
w = width
h = height
In the image, we are given the following information:
l = 40
w = 60
h = 30
Now, let's plug in the information given to us to solve for surface area:
SA = 2 ( wl + hl + hw)
SA = 2 ( 60(40) + 30(40) + 30(60) )
SA = 2 ( 2400 + 1200 + 1800 )
SA = 2 ( 5400 )
SA = 10,800 ft²
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Find the solution to the system of equations.
−2x + 2y = −4
3x + 3y = -18
X = ??
y = ??
Answers
Answer:2 x −3 y =4;3 x −2 y =1. Enter an equation or problem ... -3y + 2x = 4 -2y + 3x = 1. Solve by Substitution : // Solve equation [2] for the variable x
Step-by-step explanation:
After being observed many times, Beverly Demarr, a hospital lab analyst, had an average observed time for blood tests of 12 minutes. Beverly's performance rating is 105%. The hospital has a personal, fatigue, and delay allowance of 16%. of a) Find the normal time for this process. b) Find the standard time for this blood test
Answers
The normal time for the blood test process performed by Beverly Demarr, a hospital lab analyst, is calculated to be 13.92 minutes. The standard time for the blood test is determined to be 14.04 minutes.
a) The normal time for a process is the time it should ideally take to complete the task under standard conditions, without any personal, fatigue, or delay factors. To calculate the normal time, we need to divide the average observed time by the performance rating. In this case, Beverly's average observed time for blood tests is 12 minutes, and her performance rating is 105%. Therefore, the normal time for the process is calculated as follows:
Normal Time = Average Observed Time / Performance Rating
Normal Time = 12 minutes / 105%
Normal Time ≈ 11.43 minutes
b) The standard time for a process includes not only the normal time but also the allowances for personal, fatigue, and delay factors. The total allowance is 16% of the normal time. To calculate the standard time, we add the total allowance to the normal time. Using the calculated normal time of 11.43 minutes, we can determine the standard time as follows:
Total Allowance = Normal Time× Allowance Percentage
Total Allowance = 11.43 minutes × 16%
Total Allowance ≈ 1.83 minutes
Standard Time = Normal Time + Total Allowance
Standard Time = 11.43 minutes + 1.83 minutes
Standard Time ≈ 13.92 minutes
Therefore, the normal time for the blood test process performed by Beverly Demarr is approximately 13.92 minutes, and the standard time for the blood test is approximately 14.04 minutes.
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in the diagram measure angle ACB=61 find measure angle ACEMeasure of angle ACE=...°
Answers
From the figure, angle ACB anf angle BCD are complementary, that is,
∠ACB + ∠BCD = 90°
Replacing with data
61° + ∠BCD = 90°
∠BCD = 90° - 61°
∠BCD = 29°
From the picture, angle BCD and angle FCE are vertical angles, then they are congruent, which means that:
∠FCE = ∠BCD = 29°
Angle FCA is a right angle, that is, ∠FCA = 90°. Therefore:
∠FCE + ∠FCA = ∠ACE
29° + 90° = ∠ACE
119° = ∠ACE
need help asap due soon….
Answers
Answer: C
Step-by-step explanation:
the rate equation comes from
y=mx+b b is your initial fee and m is charge for every shirt
For S
y=5.5s+80
For T
y=7.5s+50
They want to know T<S
or 7.5s+50<5.5s+80
A wrong, not even right equations
B wrong, because T>S and that's not what you want
C correct
D wrong the equation is wrong
Can someone help me with this having trouble !
Answers
Answer:
B. The coefficient of the second term is -5.
and
D. The coefficient of the fourth term is -10.
Step-by-step explanation:
The coefficient is the number being multiplied by a variable.
Hope this helps!
Answer:
Tick:
- the coefficient of the second term is -5
- the coefficient of the fourth term is -10
Explanation:
The coefficient of an expression is simply the number placed before and multiplying the variable (e.g. 10x ; the coefficient is 10, the variable is x)
Hope this makes sense. Feel free to inquire further if need be!
- profparis
In the figure, three lines intersect at point P. If x = 65 and y = 75, what is the value of z?
Answers
The value of angle Z is 40 degrees. (Option 3). In this problem, we are given that three lines intersect at point P and we need to find the value of angle Z.
We know that angle X is 65 degrees and angle Y is 75 degrees. We also know that all six angles formed by the intersection of the three lines add up to 360 degrees.
Using these facts, we can set up an equation as
2X + 2Y + 2Z = 360.
We can simplify this equation to
X + Y + Z = 180.
We can then substitute the given values of X and Y to get
65 + 75 + Z = 180.
Simplifying this equation, we get Z = 40, which means Z is equal to 40 degrees.
Therefore, the answer is option C.
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Complete Question:
In the figure, 3 lines intersect at point P. If x = 65 and y = 75, what is the value of z?
140804020
Please answer question #2 and please show work
Answers
9514 1404 393
Answer:
2a. (360x +495)/(8x +11) = 45
2b. 2((8x+11) +45) = 16x +112
Step-by-step explanation:
a) The area is the product of length and width.
A = LW
We are given ...
W = 8x +11
A = 360x +495
The value of length can be found by solving for L:
L = A/W
L = (360x +495)/(8x +11)
The long-division solution to this is shown in the attachment.
L = 45 . . . . simplified expression for length
__
b) The perimeter of the tank is twice the sum of length and width:
P = 2(L +W)
Substituting the values for L and W, this is ..
P = 2(45 +(8x +11)) . . . . expression for length of edge seal
P = 2(8x +56)
P = 16x + 112 . . . . . . simplified expression for seal length
is 1,2 a function?
If it’s correct I will cashapp you :))
Answers
Answer:
yes
Step-by-step explanation:
Since there is one value of y for every value of x, this relation is a function.
The relation is a function.
The average age of 6 men is 35 years and the average age of four of them is 32 year.
Find the ages of the remaining two ment one is 3 years older than the other.
Answers
Let's denote the ages of the two remaining men as x and x + 3 (since one is 3 years older than the other).
We know that the average age of 6 men is 35 years. So, the sum of their ages is 6 * 35 = 210 years.
We also know that the average age of four of them is 32 years. So, the sum of their ages is 4 * 32 = 128 years.
To find the sum of the ages of the two remaining men, we subtract the sum of the ages of the four men from the sum of the ages of all six men:
210 - 128 = 82 years.
Now, we can set up an equation to solve for the ages of the remaining two men:
x + (x + 3) = 82.
Combining like terms, we get:
2x + 3 = 82.
Subtracting 3 from both sides:
2x = 79.
Dividing both sides by 2:
x = 39.5.
So, one of the remaining men is 39.5 years old, and the other is 39.5 + 3 = 42.5 years old.
please help! proof
Given: FA bisects ∠LFK and ∠LAK
Prove: FA bisects ∠LJK
Answers
Answer:look at the picture below
Step-by-step explanation:
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△LAJ ≅△KAJ by SAS rule. So, FA bisect Angle LJK.
What is congruency?If two shapes are similar in size and shape, they are congruent. We can also state that if two shapes are congruent, then their mirror images are identical. If and only if two angles have equal measurements, they are said to be congruent.
Given that FA bisects ∠F and ∠A
Prove: FA bisects ∠LJK
Thus,
△ALF ≅△AKF (ASA rule)
LA = KA
By ASA rule, triangle ALF is congruent to triangle AKF.
△LAJ ≅△KAJ (by SAS rule) so, FA bisect Angle LJK.
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Eff bezos awarded which singer the courage and civility award along with $100 million to be distributed to charities as she sees fit?.
Answers
Answer:
Dolly Parton
Step-by-step explanation:
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