Answer: the answer is -5 subtract 9 and 4 you get 5 then add 8v to -9v you get -1v then you divide it from 5 and v= -5
Step-by-step explanation:
Give the domain and range of the relation shown in the following
The graph of the function is given.
ExplanationTo find the domain and range of the function,
The domain of the function is determined as the set of x-values that satisfies the function.
The range of the function is determined as the set of y-values that satisfies the function.
The domain from the graph is lies in the interval
\(\lbrack-1,\infty)\)The range from the graph is lies in the interval
\((-\infty,\infty)\)AnswerHence the correct option is D.
The length of a rectangular field is represented by the expression 14x-3x^2+2y . The width of the field is represented by the expression 5x-7x^2+7y . How much greater is the length of the field than the width?
The length of the field is greater than the width by the expression \((14x - 3x^2 + 2y) - (5x - 7x^2 + 7y).\)
1. The length of the field is represented by the expression \(14x - 3x^2 + 2y.\)
2. The width of the field is represented by the expression \(5x - 7x^2 + 7y\).
3. To find the difference between the length and width, we subtract the width from the length: (\(14x - 3x^2 + 2y) - (5x - 7x^2 + 7y\)).
4. Simplifying the expression, we remove the parentheses: \(14x - 3x^2 + 2y - 5x + 7x^2 - 7y.\)
5. Combining like terms, we group the \(x^2\) terms together and the x terms together: \(-3x^2 + 7x^2 + 14x - 5x + 2y - 7y.\)
6. Simplifying further, we add the coefficients of like terms:\((7x^2 - 3x^2) + (14x - 5x) + (2y - 7y).\)
7. The simplified expression becomes: \(4x^2 + 9x - 5y.\)
8. Therefore, the length of the field is greater than the width by the expression \(4x^2 + 9x - 5y.\)
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Trevon bought 8 pairs of pants for a total of $520. Dress pants cost $80 and jeans cost $40. How many pairs of jeans did he buy?
Answer:
9
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
Given the following exponential function,
identify whether the change represents
growth or decay, and determine the
percentage rate of increase or decrease.
y = 970(1.042)*
The change represents growth and rate of increase is 4.2%
What is an exponential function?Exponential functions model a relationship in which a constant change in the independent variable gives the same proportional change.
Given that, an exponential function y = 970(1.042)ˣ
When the growth rate is greater than 1, then the function represents a growth.
The general form equation is:
y(x)= a(1+r)ˣ such that r is the growth percent.
So,
1+r = 1.042
r = 0.042
r = 4.2%
Hence, the growth rate is 4.2%
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A right rectangular box has a volume of 1144 ft.³. The box is 8 feet long and 13 feet high. How wide is the box?
To solve for the volume of a rectangular prism, we could use the following formula:
\(V=l*w*h\)
V = volumel = lengthw = widthh = heightAlthough we typically use this formula to solve for the volume, we could also use it to determine any of the variables above. All we have to do is rearrange the equation to isolate what we need to find.
Solving the QuestionWe're given:
V = 1144 ft³l = 8 fth = 13We must solve for the width of the boxFirst, rearrange the volume formula to isolate width (w):
\(V=l*w*h\)
⇒ Divide both sides by \(l*h\):
\(\dfrac{V}{l*h}=\dfrac{l*w*h}{l*h}\\\\\dfrac{V}{l*h}=w\\\\w=\dfrac{V}{l*h}\)
⇒ Plug in the given values for V, l and h:
\(w=\dfrac{1144}{8*13}\\\\w=11\)
Therefore, the box is 11 ft wide.
AnswerThe box is 11 ft wide.
Answer:
(A) 11 ft.
Step-by-step explanation:
got it right
Suppose you start with one liter of vinegar and repeatedly remove 0.14 L, replace with water, mix, and repeat. a. Find a formula for the concentration after n steps. b. After how many steps does the mixture contain less than 9% vinegar?
Formula for the concentration after n steps is \(C(n) = C(0) * (0.86)^n\) and
after 11 steps, the mixture contains less than 9% vinegar.
What is concentration?
Concentration in science refers to the amount of a particular substance (the solute) that is dissolved in a given amount of a solution. It is typically expressed in units of moles per liter (M or mol/L) or as a percentage or fraction of the total solution.
a. Let C(n) be the concentration of vinegar after n steps. At each step, we remove 0.14 L of the mixture, which contains C(n) liters of vinegar. So we are left with (1 - C(n)) liters of water. We then add back 0.14 L of water, giving us a total volume of 1 liter. Therefore, the concentration after one step is:
\(C(1) = C(0) * \frac{1 - 0.14}{1}\)
where C(0) is the initial concentration of vinegar, which is 1 liter per liter or 100%. After two steps, we repeat the process:
C(2) = C(1) * \(\frac{1 - 0.14}{1}\)
Substituting the formula for C(1), we get:
C(2) = C(0) * \((\frac{1 - 0.14}{1}) * (\frac{1 - 0.14}{1})\)
or, more generally:
\(C(n) = C(0) * (0.86)^n\)
b. We want to find the smallest integer n such that C(n) < 0.09 or 9%. Substituting the formula from part (a), we get:
\(C(0) * (0.86)^n < 0.09\)
Dividing both sides by C(0), we get:
\((0.86)^n < 0.09\)
Taking the natural logarithm of both sides, we get:
n * ln(0.86) < ln(0.09)
Dividing both sides by ln(0.86), we get:
n > ln(0.09) / ln(0.86)
Using a calculator, we get:
n > 10.7
Since n must be an integer, the smallest possible value of n is 11. Therefore, after 11 steps, the mixture contains less than 9% vinegar.
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5. Simplify 4(w - 9).
Your fundraising group earns 25c for each lemonade and
50c for each tạco sold. One hundred tacos are sold. Your total profit is $100.
How many levonades are sold? Write an equation that models this situation.
Solve the equation using mental math.
Answer:
The answer is 100$ worth of lemonades
Step-by-step explanation:
Because 200$ are made with the tacos and lemonade so if the profit is 100 then you divide 100 by 2, so 50+50= 100.
√(x2−2x−2)+√(2x−3)=5
\(\\ \sf\longmapsto \sqrt{(x^2-2x-2)}+\sqrt{2x-3}=5\)
We know
if x=√a+√b then
x^2=a+b+2√ab\(\\ \sf\longmapsto x^2-2x-2+2x-3+2\sqrt{(x^2-2x-2)(2x-3)}=5^2\)
\(\\ \sf\longmapsto x^2-3+2\sqrt{2x^3-4x^2-4x-3x^2+6x+6}=25\)
\(\\ \sf\longmapsto 2\sqrt{2x^3-7x^2+2x+6}=25-x^2+3=28-x^2\)
\(\\ \sf\longmapsto \sqrt{2x^3-7x^2+2x+6}=\dfrac{28-x^2}{2}\)
\(\\ \sf\longmapsto 2x^3-7x^2+2x+6=\dfrac{(28-x^2)^2}{4}\)
\(\\ \sf\longmapsto 2x^3-7x^2+2x+6=\dfrac{784-56x^2+x^4}{4}\)
\(\\ \sf\longmapsto 8x^3-28x^2+8x+24=784-56x^2+x^4\)
\(\\ \sf\longmapsto x^4-8x^3-28x^2-8x+760=0\)
Solving furtherThe equation has no real solutions .(attached a pic of calculator )
Answer:
\({ \rm{ \sqrt{( {x}^{2} - 2x - 2) } + \sqrt{(2x - 3)} = 5 }}\)
• let's first collect like terms
\({ \rm{ \sqrt{( {x}^{2} - 2x - 2)} = 5 - \sqrt{(2x - 3)} }}\)
• Then, let's take a square:
\({ \rm{ {( \sqrt{( {x}^{2} - 2x - 2)}) }^{2} = {(5 - \sqrt{(2x - 3)} )}^{2} }} \\ \\ { \rm{ {x}^{2} - 2x - 2 = (5 - {(2x - 3)}^{ \frac{1}{2} } )(5 - {(2x - 3)}^{ \frac{1}{2} }) }} \\ \\ { \rm{ {x}^{2} - 2x - 2 = 25 - 10 \sqrt{2x - 3} - 2x - 3 }} \\ \\ { \rm{ {x}^{2} - 2x + 2x - 2 - 22 + 10 \sqrt{2x - 3} = 0}} \\ \\ { \rm{ {x}^{2} + 10 \sqrt{2x - 3} - 22 = 0}} \\ \\ { \rm{the \: roots \: of \: the \: equation \: are \: not \: real}}\)
Answer: x = 3(-1 + i) or 3(-1 - i)
g(-4) =
anyone know the answer to this
a) 8801
+2031
_______
Answer:
the answer is 10832
Step-by-step explanation:
you can use a calculator
Answer:
10832
Step-by-step explanation:
Add one digit at the time (from right to left):
1 + 1 = 2
0 + 3 = 3
8 + 0 = 8
8 + 2 = 10
Now we get 10832
use the vertical column method of multiplication to calculate 3457×223
3457×223 = 770911 from multiplication from vertical column method.
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
As per the given data:
We have to use the vertical column method of multiplication to calculate, 3457×223.
Multiplication from vertical column method:
3 4 5 7
× 2 2 3
+ 1 0 3 7 1
+ 6 9 1 4
+ 6 9 1 4
= 7 7 0 9 1 1
Hence, 3457×223 = 770911 from multiplication from vertical column method.
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Find the value of x such that the line containing (1,2) and (5,3) is perpendicular to the line containing (x,4) and (3,0)
The value of x that makes the line containing (1,2) and (5,3) perpendicular to the line containing (x,4) and (3,0) is x = 2.
To determine the value of x such that the line containing (1,2) and (5,3) is perpendicular to the line containing (x,4) and (3,0), we need to find the slope of both lines and apply the concept of perpendicular lines.
The slope of a line can be found using the formula:
slope = (change in y) / (change in x)
For the line containing (1,2) and (5,3), the slope is:
slope1 = (3 - 2) / (5 - 1) = 1 / 4
To find the slope of the line containing (x,4) and (3,0), we use the same formula:
slope2 = (0 - 4) / (3 - x) = -4 / (3 - x)
Perpendicular lines have slopes that are negative reciprocals of each other. In other words, if the slope of one line is m, then the slope of a line perpendicular to it is -1/m.
So, we can set up the equation:
-1 / (1/4) = -4 / (3 - x)
Simplifying this equation:
-4 = -4 / (3 - x)
To remove the fraction, we can multiply both sides by (3 - x):
-4(3 - x) = -4
Expanding and simplifying:
-12 + 4x = -4
Adding 12 to both sides:
4x = 8
Dividing both sides by 4:
x = 2
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helpppppppppppppppppppppppppppppppppppppp
Answer:
the last one
Step-by-step explanation:
there is no rhythm
suppose that a large influx of electric scooter rentals in a crowded downtown area results in a lot of new riders on the streets. for their safety, the mayor of the city decides to enact a law requiring helmets when renting scooters. these new helmets reportedly decrease the probability of injury by 29% in the event of a scooter crash. While the new helmets (increase/decrease) the probability of injury resulting from a scooter accident, they also incentivize individuals to ride (more/less) recklessly, which could (increase/decrease) the number of scooter collisions and therefore injuries to renters. Please choose one
While the new helmets decrease the probability of injury resulting from a scooter accident, but they also incentivize individuals to ride more recklessly, which could increase the number of scooter collisions and therefore injuries to renters.
The reason for the above statement is based on the concept of risk compensation. When the perceived risk of an activity is reduced, individuals may engage in more risky behavior. For example, if individuals believe that wearing a helmet makes them safer while riding a scooter, they may feel less concerned about the potential consequences of riding recklessly, leading to an increase in the number of accidents. On the other hand, the helmet does decrease the probability of injury in the event of a crash, but an increase in the number of crashes could lead to an overall increase in the number of injuries, offsetting the protective effect of the helmets. Therefore, the net impact of the new helmets on the number of scooter injuries is unclear, and further study is needed to determine their overall effect.
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Challenge Word Problems
1. A 747 Airplane la 762 Inohos tall. How fall to it in foot?
2. The river raft ride at the amusement park oan hold 12 riders at a
time. There are 527 people in line. How many times will the ride need
to run in order to get all 527 people through the ride?
3. One school bus can hold 46 students. There are 24 students in each
of the 5 fifth grade classes. How many buses will they need in order to
transport everyone to the zoo for a field trip?
4. Write and solve a word problem that requires long division AND has a
remainder.
02014 Tedoning Wittra Mountain View
ඉල ම
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A) A 747 Airplane is 762 inches tall. 762 inches is equal to 63.5 feet, so the airplane is 63.5 feet tall.
What is airplane?An airplane is a type of aircraft that is heavier than air and propelled by one or more jet engines. It is used for transport across long distances, typically carrying passengers and cargo.
The river raft ride at the amusement park can hold 12 riders at a time. 527 people divided by 12 riders per ride is 44.75. This means the ride will need to run 44 times in order to get all 527 people through the ride.
One school bus can hold 46 students. There are 24 students in each of the 5 fifth grade classes. 24 students times 5 classes is 120 students, so they will need 3 buses in order to transport everyone to the zoo for a field trip.
Write and solve a word problem that requires long division AND has a remainder.
Samantha has 192 lollipops. She wants to evenly divide them into bags of 10. How many bags will she need and how many lollipops will be left over?
192 divided by 10 is 19 with a remainder of 2. Samantha will need 19 bags and will have 2 lollipops left over.
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Write the equation in a function format.x + 4y = -12
Given the equation:
x + 4y = -12
To write this equation ain function format take the following steps:
• Step 1
Rewrite the equation in terms of y:
x + 4y = -12
4y = -x - 12
Divide through by 4:
\(\begin{gathered} \frac{4y}{4}=\frac{-x}{4}-\frac{12}{4} \\ \\ y\text{ = -}\frac{1}{4}x-3 \end{gathered}\)• Step 2:
Replace the y, with f(x)
\(f(x)=-\frac{1}{4}x-3\)This means that the function depends on x.
f(x) is the output depends on the input x.
Therefore, the equation in function format is:
\(f(x)=-\frac{1}{4}x-3\)ANSWER:
\(f(x)=-\frac{1}{4}x-3\)Divide using long division.
8x3 - 18x2 + 21x - 20 = 2x - 3
Answer:
\( \frac{29}{19} \)
Step-by-step explanation:
Hopefully that is correcr
What is the value of x?
Answer:
Step-by-step explanation:
(2x - 5)° + 45° = 180°
2x - 5 + 45 = 180
x = 70
What is the standard form of 3.457
Answer:
3.457 is already in standard form.
Step-by-step explanation:
Need help answering question 4 please
The answer is 140 because 14 x 10 is 140
In which number is the digit 4 ten times larger than in the number 384?
O 842
O 954
O 1,469
O 4,216
The number 842 is the number whose digit 4 is ten times larger than in the number 384
Finding the numberTo solve the problem, we need to find a number in which the digit 4 is ten times larger than in the number 384.
In the number 384, the digit 4 is in the ones place, which means that its value is 4.
To find a number in which the digit 4 is ten times larger, we need to find a number in which the digit 4 is in the tens place and its value is 10 times larger than 4, which is 40.
The only answer option that fits this description is 842. In this number, the digit 4 is in the tens place and its value is 40, which is ten times larger than its value in the number 384.
Therefore, the correct answer is 842.
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the bar graph below represents the number of each type of animal found in northern Pennsylvania forest by a researcher. If the researcher moved to a larger central Pennsylvania forest with about 1,000 total animals , how many beats should the researcher expect to see?
The number of bears that the researcher should be expected to see in the larger central Pennsylvania forest with about 1,000 total animals is given as follows:
95 bears.
How to obtain the number of bears?To obtain the number of bears in the larger forest, first we must obtain the proportion in the smaller forest.
The proportion is given by the number of bears divided by the total number of animals, both of these amounts given by the bar graph presented at the end of the answer.
The number of bears is given as follows:
20.
The total number of animals is given as follows:
20 + 70 + 30 + 90 = 210.
Meaning that the proportion of bears is of:
20/210.
Hence, out of 1000 animals, the expected number of bears is of>
20/210 x 1000 = 20000/210 = 95 bears.
Missing InformationThe bar graph is given by the image presented at the end of the answer.
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Find and prove an inequality relating 100n and n^{3} .
An inequality relating 100n and n³ is 100n ≥ n³ for n ≤ 10 and 100n ≤ n³ for n ≥ 10.
What is inequality?An inequality is comparison of two values, showing if one is less than, greater than, or simply not equal to another value.
Since 100n and n³ for n = 1, 2, 3, . . . 9, 10, 11 are 100, 200, 300, . . . 900, 1000, 1100 and 1, 8, 27, . . . 729, 1000, 1331 respectively.
Therefore, an inequality relating 100n and n³ will be 100n ≥ n³ for n ≤ 10 and 100n ≤ n³ for n ≥ 10.
Induction hypothesis:
Suppose 100n ≤ k³ for some positive integer k ≥ 10.
We need to show that 100( k + 1 ) ≤ ( k + 1 )³ = k³ + 3k² +3k + 1.
Note 100( k + 1 ) = 100k + 100 ≤ k³ + 100
≤ k³ + 3k² (∵ k ≥ 10 )
≤ k³ + 3k² + 3k
≤ k³ + 3k²+3k + 1
So 100( k + 1 ) ≤ ( k + 1 )³, which is true.
Hence by the principle of mathematical induction, 100n ≤ k³ for every integer k ≥ 10.
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What number is shown on the number line
Answer:
Hey mate.....pls attach the pic..........
What is the constant rate of change between the two quantities in the table?
Fill in the blank (check all that apply)3 and ___ are like terms A.7B. 3xyC. xD. 21xyE. 3yF. 21x
Recall that two terms are called like terms if the variables in the terms are the same and have the same exponents, meaning they can be added or subtracted.
For example, 3x and 6x are like terms because the variable x is the same for both terms, and when adding those terms I get a simplified version of the expression:
\(3x+6x=9x\text{.}\)Now, if instead, I have 3x and 6y, the variable is not the same, so when adding them I get:
\(3x+6y=3x+6y,\)there is no way to simplify the sum. 3x and 6y are not like terms.
Therefore, the only like term to 3 in the given options is 7.
Answer: 3 and 7 are like terms.
Factor the expression using the GCF. 98 - 70 =
Answer:
14 is the GCF of both 98 and 70
A student has a container with a volume of 1.5 liters. She estimates the volume to be 2.1 liters. By what percent is the student's estimate off?
Answer:
40% (high)
Step-by-step explanation:
You want to know the percentage error when an actual value of 1.5 L is estimated to be 2.1 L.
ErrorThe percentage error is given by ...
(percent error) = (estimate/actual - 1) × 100%
percent error = (2.1/1.5 -1) × 100%
= (1.40 -1.00) × 100% = 0.40 × 100%
= 40%
The student's estimate is 40% too high.
What is the solution to this equation? 3v(1/8-x)=-1/2
Answer:
v = −4/−24x+3
Step-by-step explanation:
Let's solve for v.
3v(1/8−x) = −1/2
Step 1: Factor out variable v.
v(−24x+3/8) = −1/2
Step 2: Divide both sides by (-24x+3)/8.
v(−24x+3/8)/−24x+3/8 = −1/2/−24x+3/8
v=−4/−24x+3