I need it done very quick pls help

Answer: 22

Step-by-step explanation:

2r - 7 = r + 15

2r - r = 15 + 7

2r = 22

r = 22/2

r = 11

The first step would be to assume that "the measure of angle B does not equal 40º".

The first step to assume in order to prove the statement above by contradiction using an indirect proof would be to assume the opposite of what you are trying to prove.

In this case, the opposite of the statement "the measure of angle B equals 40º" is "the measure of angle B does not equal 40º".

So, the first step would be to assume that "the measure of angle B does not equal 40º".

This assumption will be used to reach a contradiction, which will ultimately prove that the original statement is true.

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Answer:

b, c and e

Step-by-step explanation:

Given

See attachment for functions

Required

Select all statements that contain both functions

First, calculate the rate (slope) of both functions.

This is calculated as:

\(m = \frac{y_2 - y_1}{x_2 - x_1}\)

For Alec's

\((x_1,y_1) = (0,3)\)

\((x_2,y_2) = (2,9)\)

So, the slope is:

\(m = \frac{9 - 3}{2 - 0}\)

\(m = \frac{6}{2}\)

\(m =3\)

For Beth's

\((x_1,y_1) = (5,17)\)

\((x_2,y_2) = (12,38)\)

So, the slope is:

\(m = \frac{38 - 17}{12 - 5}\)

\(m = \frac{21}{7}\)

\(m =3\)

Beth and Rec have the same slope. Hence, they save at the same rate.

Next, determine the amount they started with.

This implies that we calculate y when x = 0

From Alec's graph.

\((x,y) = (0,3)\)

Alec's initial savings is 3

For Beth's savings, we make use of slope formula.

\(m = \frac{y_2 - y_1}{x_2 - x_1}\)

\((x_1,y_1) = (5,17)\)

\((x_2,y_2) = (0,y)\)

So, we have:

\(3 =\frac{y - 17}{0 - 5}\)

\(3 =\frac{y - 17}{ - 5}\)

\(y - 17 = -15\)

\(y = 17 -15\)

\(y = 2\)

Beth's initial savings is 2

Hence, Alec started with more money

Next, is to determine who has more money after 10 days.

Since they save at the same rate, the difference in their savings after any number of days will be the difference in their initial savings.

The difference (d) is calculated as:

\(d = 3 - 2\)

\(d = 1\)

Hence, Alec will have $1 more than Beth after 10 days

Answer:

its bc and e or Alec and Beth are saving at the same rate. Alec started with more money than Beth. and At 10 days, Alec will have $1 more than Beth in savings.

Step-by-step explanation:

Answer:

mn / ( 3*(m-n) )

Step-by-step explanation:

Product of m and n is mn

3 times their differences is 3*(m-n)

Product divided by 3 times their differences is

mn / ( 3*(m-n) )

we find the probability corresponding to z = -0.4, which is 0.3446, and the probability corresponding to z = 0.5, which is 0.1915. To find the probability between these two values, we subtract the smaller probability from the larger one. So, p(-0.4 < z < 0.5) = 0.3446 - 0.1915 = 0.1531.

To answer these questions, we need to make a sketch of the normal distribution and use the unit normal tables to determine the appropriate probability.

1. p(z > 2.1)

First, we sketch the normal distribution and shade the area to the right of 2.1. This area represents the probability we are seeking.

Using the unit normal tables, we find the probability corresponding to z = 2.1, which is 0.4821. However, since we are looking for the probability to the right of 2.1, we need to subtract this value from 1 to get the correct probability. So, p(z > 2.1) = 1 - 0.4821 = 0.5179.

2. p(z > -3.4)

Again, we sketch the normal distribution and shade the area to the right of -3.4.

Using the unit normal tables, we find the probability corresponding to z = -3.4, which is 0.0003. However, since we are looking for the probability to the right of -3.4, we need to subtract this value from 1 to get the correct probability. So, p(z > -3.4) = 1 - 0.0003 = 0.9997.

3. p(z < 1.3)

This time, we sketch the normal distribution and shade the area to the left of 1.3.

Using the unit normal tables, we find the probability corresponding to z = 1.3, which is 0.4032. So, p(z < 1.3) = 0.4032.

4. p(0.9 < z < 1.9)

For this question, we sketch the normal distribution and shade the area between 0.9 and 1.9.

Using the unit normal tables, we find the probability corresponding to z = 0.9, which is 0.3159, and the probability corresponding to z = 1.9, which is 0.4713. To find the probability between these two values, we subtract the smaller probability from the larger one. So, p(0.9 < z < 1.9) = 0.4713 - 0.3159 = 0.1554.

5. p(-0.4 < z < 0.5)

Finally, we sketch the normal distribution and shade the area between -0.4 and 0.5.

Using the unit normal tables, we find the probability corresponding to z = -0.4, which is 0.3446, and the probability corresponding to z = 0.5, which is 0.1915. To find the probability between these two values, we subtract the smaller probability from the larger one. So, p(-0.4 < z < 0.5) = 0.3446 - 0.1915 = 0.1531.

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Answer:  the correct answer is D

Step-by-step explanation:

Answer:

48 miles

Step-by-step explanation:

i think thats it.

Answer: 4.

Step-by-step explanation: 8+8=16. count how many more until you get to 24, that is 8. Split 8 in half. We get 4.

                                Hope this helps!

The given statement is a reasonable probability model because it fulfills the 4 conditions of binomial distribution.

The conditions for binomial distribution are;

1: The number of observations n must be fixed.

2: Each observation must be independent.

3: Each observation must represent one of two outcomes ("success" or "failure").

4: The probability of "success" p must be the same for each outcome.

Now, we are given the statement;

Joey buys a Virginia lottery ticket every week. x is the number of times in a year that he wins a prize.

From that statement, we can tell that the number of observations is fixed at 52 weeks since a year is made up of 52 weeks.

Secondly, we can say that there could be success by winning a price or failure by not winning the price.

Each weekly observation is independent.

The probability is the same for each outcome.

Thus, we conclude that since it fulfills all the four conditions then it is a binomial model.

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The probability that a randomly selected riverside high school student is in twelfth grade is 0.4

The complete question is in the attached image

From the image, we have:

The probability is then calculated as:

P = 200/500

Divide

P = 0.4

Hence, the probability that a randomly selected riverside high school student is in twelfth grade is 0.4

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Answer:

the answer is C

Step-by-step explanation:

Answer:

$9.75

Step-by-step explanation:

We have all we need to solve for Bag #3.

2 bags equal $6.50.

We want 3 bags, not 4. So we need to divide the original cost by 1/2.

$6.50 divided by 1/2 is $3.25

Now we add an additional $3.25 to the original $6.50

Answer:

252 cupcakes were mocha flavored

Step-by-step explanation:

(63*400)/100 = 25200/100 = 252

Answer:

252 cupcakes were mocha flavored.

Step-by-step explanation:

Answer:

slope: 0.5x

Step-by-step explanation:

1. -x +10

2. -1/ 2 = -0.5

3. 10/2 = 5

4. y = 0.5x + 5

Answer: A

Step-by-step explanation:

X values to the right of the y axis are positive. X values to the left of the y axis are negative.

Y values above the x axis are positive.

Y values below the x axis are negative.

Pairs of coordinates are always noted as (x,y) with the x value of a point given first and the y value of that same point given second.

Answer:

Step-by-step explanation:

Let A=(a,b) then the reflected over the x-axis will be A'=(a,-b)

A=(5,5) --> A'=(5,-5)

B=(5,1) --> B'=(5,-1)

C=(2,1) --> C'=(2,-1)

D=(1,5) ---> D'=(1,-5)

Answer: B i think

Step-by-step explanation:

A term can be a number, a variable, product of two or more variables or product of a number and a variable. An algebraic expression is formed by a single term or by a group of terms.

A = 78.54

A = 3.14r^2

Answer:

a

Step-by-step explanation:

area of parallelogram is equal to base times height 7 * 4

Answer:

2500

Step-by-step explanation:

The perimeter is given by the formula :

P = 4L  (L is length)

We rearrange the equation to get L as the subject:

L = P÷4

L = 200÷4

L = 50

The area of a square is given by the formula :

A = L²

A = 50²

A = 2500

Answer:

3:1 is a unit rate

Step-by-step explanation:

Answer:

hi.......................

Step-by-step explanation:

stop being a selfish point grabber dude, its effed up. i needed help on that question and you screwed it up :|

The cost of one hosta is approximately $7 and the cost of one geranium is approximately $4.

To find the cost of one hosta and one geranium, we can set up a system of equations based on the given information.

Let's assume the cost of one hosta is represented by 'h' and the cost of one geranium is represented by 'g'.

From the information given, we can set up the following equations:

Eugene's spending:

18h + 6g = $150

Jessica's spending:

7h + 16g = $113

We can now solve this system of equations to find the values of 'h' and 'g'.

Multiplying the first equation by 2 and the second equation by 3 to eliminate 'g', we get:

36h + 12g = $300

21h + 48g = $339

Now, we can subtract the second equation from the first to eliminate 'h':

(36h + 12g) - (21h + 48g) = $300 - $339

36h - 21h + 12g - 48g = -$39

15h - 36g = -$39

Simplifying further, we have:

15h - 36g = -$39

Now we can solve this equation for 'h' and substitute the value back into any of the original equations to find 'g'.

Let's solve for 'h':

15h = 36g - $39

h = (36g - $39) / 15

Substituting this value of 'h' into Eugene's equation:

18[(36g - $39) / 15] + 6g = $150

(648g - $702) / 15 + 6g = $150

648g - $702 + 90g = $150 * 15

738g - $702 = $2250

738g = $2250 + $702

738g = $2952

g = $2952 / 738

g ≈ $4

Now, substituting the value of 'g' back into Eugene's equation:

18h + 6($4) = $150

18h + $24 = $150

18h = $150 - $24

18h = $126

h = $126 / 18

h ≈ $7

Therefore, the cost of one hosta is approximately $7 and the cost of one geranium is approximately $4.

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Answer: 3,285 Liters

Step-by-step explanation:

In the actual case, all your flushes consume 6 L of water.

You flush 4 times per day, then you consume 4 times 6 L per day, this is:

4*6L = 24 L per day.

And in one year there are 365 days, then in one year you consume:

365*24 L = 8,760 L

Now, if you upgrade the toilet, now per day you use:

one time 6 L and 3 times 3 L

Then in day, you use:

1*6 L + 3*3 L = 6L + 9L = 15L

And in the complete year, you will use 365 times that, which is:

365*15 L = 5,475 L

The amount of water that you would save is equal to the difference between the amount that you use in one year with no upgrade (8,760 L) and the amount that you would use in a year if you upgraded your toilet ( 5,475 L)

The difference is:

D = 8,760 L - 5,475 L = 3,285 L

This means that, in this situation, you would save 3,285 liters of water per year if you upgrade your toilet.

Answer: C

she donates a for 12 months, the 12 in the a * 12=300. the a is the fixed amount, meaning she will donate a 12 times in a year.

The amount Kathy got back is $3945.

percentage, a relative value indicating hundredth parts of any quantity.

The amount invested by Kathy(P) = $3000

The rate at which the amount is invested (r) = 7% per annum

Time for which the amount is invested (t) = 4 years and 6 month = 4.5 years

the simple interest calculated by

Simple Interest = ( 3000 × 7 × 4.5)/100

= 94500/100

= 945

So , the interest is $945 .

So , the amount that Kathy get = Principle + Interest

= 3000 + 945

= 3945

Hence, the amount Kathy got back is $3945.

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The composite function f·g(x) is 4x⁴+24x³.

The given functions are f(x)=x²+6x and g(x)=4x².

We need to find f·g(x).

We know that, f·g(x)=f(x)×g(x)

Here, f·g(x)=(x²+6x)×4x²

= x²×4x²+6x×4x²

= 4x⁴+24x³

Therefore, the composite function f·g(x) is 4x⁴+24x³.

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After answering the provided question, we can conclude that So the perimeter correct answer for Zearn is 67.5.

A two-dimensional geometric shape's perimeter is the entire length of the demarcation line or outer edge. It is the total length of the shape's ends or edges. For example, the polygon of a square is determined by accumulating the duration of all 4 sides of square. Similarly, to calculate the perimeter of a rectangular shape, add the distances of two adjacent edges and then multiply by two because there are 2 type of adjacent sides.

To calculate the perimeter of the entire shape, we must add the lengths of the half-circle and the equilateral triangle.

The radius of the half-circle is 11/2 = 5.5 inches, which is half the length of the base of the equilateral triangle. As a result, the circumference of the half-circle is:

C = πd = π(2r) = π(2 x 5.5) = 11π

Given as 3.14, we can calculate the circumference of the half-circle as 11 x 3.14 = 34.54 inches.

Because the equilateral triangle has 11-inch sides, its perimeter is 3 x 11 = 33 inches.

As a result, the approximate perimeter of the entire shape is as follows:

34.54 plus 33 equals 67.54 inches

67.5 inch approximate perimeter

So the correct answer for Zearn is 67.5.

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When x is equal to 1, the Function f(x) = -4x - 5 yields a value of -9.

The find ƒ(1) for the function f(x) = -4x - 5, we need to substitute x = 1 into the function and evaluate the expression.

Replacing x with 1, we have:

ƒ(1) = -4(1) - 5

Simplifying further:

ƒ(1) = -4 - 5

ƒ(1) = -9

Therefore, when x is equal to 1, the value of the function f(x) = -4x - 5 is ƒ(1) = -9.

Let's break down the steps taken to arrive at the solution:

1. Start with the function f(x) = -4x - 5.

2. Replace x with 1 in the function.

3. Evaluate the expression by performing the necessary operations.

4. Simplify the expression to obtain the final result.

In this case, substituting x = 1 into the function f(x) = -4x - 5 gives us ƒ(1) = -9 as the output.

It is essential to note that the notation ƒ(1) represents the value of the function ƒ(x) when x is equal to 1. It signifies evaluating the function at a specific input value, which, in this case, is 1.

Thus, when x is equal to 1, the function f(x) = -4x - 5 yields a value of -9.

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Answer:

Step-by-step explanation:

Given the gas mileage for a certain vehicle modeled by the equation m=−0.05x²+3.5x−49 where x is the speed of the vehicle in mph. In order to determine the speed(s) at which the car gets 9 mpg, we will substitute the value of m = 9 into the modeled equation and calculate x as shown;

m = −0.05x²+3.5x−49

when m= 9

9 = −0.05x²+3.5x−49

−0.05x²+3.5x−49 = 9

0.05x²-3.5x+49 = -9

Multiplying through by 100

5x²+350x−4900 = 900

Dividing through by 5;

x²+70x−980 = 180

x²+70x−980 - 180 = 0

x²+70x−1160 = 0

Using the general formula to get x;

a = 1, b = 70, c = -1160

x = -70±√70²-4(1)(-1160)/2

x = -70±√4900+4640)/2

x = -70±(√4900+4640)/2

x = -70±√9540/2

x =  -70±97.7/2

x = -70+97.7/2

x = 27.7/2

x = 13.85mph

x ≈ 14 mph

Hence, the speed(s) at which the car gets 9 mpg to the nearest mph is 14mph

The loan's future value, FV = $10563.5

Let the amount borrowed by Lynned be the principal, P

P = $9250

The interest rate , r = 7.1%

r = 7.1 / 100

r = 0.071

Time, t = 24 months

12 months = 1 year

24 months = 2 years

t = 2 years

The future value is given by the formula:

FV = P ( 1 + rt)

FV = 9250 ( 1 + 0.071(2) )

FV = 9250 ( 1 + 0.142)

FV = 9250 ( 1.142)

FV = $10563.5

Answer:

1024

192

32

Step-by-step explanation:

((8)+(24))² = (32)² = 1024

(8)×(24) = 192

(8)+(24) = 32

As per the binomial distribution, the probability that every insect will die is 0.22%.

Binomial distribution:

Binomial distribution refers a discrete probability distribution that gives only two possible results in an experiment, either success or failure.

The formula for calculating binomial distribution is

P = ⁿCₓ pˣ qⁿ⁻ˣ

P = binomial probability

x = number of times for a specific outcome within n trials

p = probability of success on a single trial

q = probability of failure on a single trial

n = number of trials

Given,

A certain insecticide kills 80% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide in a particular experiment.

Here we need to find the probability that every insect will die and round off it into four decimal places.

While we looking into the given question we have identified that it is the binomial type probability distribution.

And we have identified the following values,

The number of trials n= 12

Probability of the success trial = 0.8,  

Number of success trials k = 12

Now, we have apply the values on the binomial distribution formula, then we get,

=> P = ¹²C₁₂ x (0.6)¹² x (1 - 0.6)¹²⁻¹²

When we simplify it then we get,

=> P = 1 x 0.0022 x (0.4)⁰

=> P = 0.0022

When we convert this into percentage then we get, 0.22%

Therefore, the resulting probability is 0.22%.

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