What is the value of b in the equation below? 9^-8 x 9^-2 = a^b
-10
-6
9
16

Answer:

The total of a triangle like all the angles added together have to equal 180 degrees

2

the second answer choice

Step-by-step explanation:

115+25+35= 175

end result isn't 180 so no!

115+32+33= 180

end result is 180 so yes!

120+35+35= 190

end result isn't 180 so no!

120+30+20= 170

end result isn't 180 so no!

Answer:

$1.1

Step-by-step explanation:

First take if 110% is equals to $1.21 what about 100%

1.21×100=121÷110= $1.1

Answer: 75

Step-by-step explanation:

Step-by-step explanation:

In order to cover his backyard with sod, he needs to cover the area of the backyard.

His backyard is a rectangle, and area of a rectangle represented by A is given as l*w

Where,

is the length, and

is the width

So, the area of Jim's backyard is square yards.

l*w=12/5/6*10/2/5=2002/15 or 133.466

The area of each sods are solved using the area of the rectangle formula.

l*w=1/1/3*1/1/3=16/9

To find HOW MANY of these sods we would need to cover the whole backyard, we divide the backyard area by each sod area:

=2002/15 divided by 16 /9=3003/40or 75.075

Since, fractional sods can't be bought, Jim has to buy 75 sods approximately .

Answer:

Sample response: The Smith family has 2 choices to make, color

and style. By the fundamental counting principle, the product of the

number of choices of color and style must equal 8. So, there could be 1

color and 8 style choices, 2 colors and 4 styles, 4 colors and 2 styles,

or 8 colors and 1 style.

Step-by-step explanation:

The smith can have 1 style and 8 colors, 2 styles and 4 colors, 4 styles and 2 colors, and 8 styles and 1 color.

A permutation can be defined as the number of ways a set can be arranged, order matters but in combination, the order does not matter.

We have:

Smith family is shopping for a new car and they are basing their decision on color and style.

The total possible outcomes = 8

By the principle of counting the smith family has four choices.

The above are the factors of 8 because smith has a total number of 8 possible outcomes.

Thus, the smith can have 1 style and 8 colors, 2 styles and 4 colors, 4 styles and 2 colors, and 8 styles and 1 color.

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The measure of angle CBD in a regular pentagon with perimeter 60 cm is 108°. This conclusion assumes that CBD refers to an internal angle of the pentagon and is based on the formula for internal angles of a regular polygon.

The subject of the question is related to a regular pentagon which is a polygon with 5 equal sides and equal angles. If the perimeter of the regular pentagon is 60 cm, it means each side measures 60/5 = 12 cm.

The question is asking for the measure of angle CBD. In a regular pentagon, angles are not directly named but it's likely referring to an internal angle of the pentagon. Based on this assumption, we can calculate the measure of an internal angle of a regular polygon using the formula: (n-2) x 180° / n where 'n' is the number of sides. Substituting '5' in place of 'n' because a pentagon has 5 sides, we get (5-2) x 180° / 5, which results in 108°. Therefore, if CBD is an internal angle then it measures 108 degrees.

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Answer:

324

Step-by-step explanation

the answer is c. i do online work, yw!

Answer: B

Step-by-step explanation:

Both the mean and the median will decrease, but the mean will decrease by more than the median.

Answer:

Both the mean and the median will decrease, but the mean will decrease by more than the median.

Step-by-step explanation:

Pls give brainliest I never get them, I beg of u pleaseeeeeeeeeeeee, i am poor

Answer: B and A

Step-by-step explanation:

(X+3)2 = 2×x + 2×3

= 2x + 6

Likewise

2(x+3) = 2×x +. 2×3

= 2x + 6

Hence they are both same

2.(X +3) still equivalent to 2x +6

Answer:

A and B

Step-by-step explanation:

In this question, we are asked to pick the options which have the same value as the expression in the question.

Firstly, let’s expand the main expression in the question.

Mathematically, expanding this, we have 2x + 6

now let’s consider the options one after the other.

Options A and B are correct as they mean the same thing and would refer to the expression in the question.

Option c is wrong. Expanding option c would yield 2x + 4

option d is wrong as the multiplication is only between 2 and x and does not cover 3. This makes the expression as 2x + 3

option E is is also wrong as it is same as D but expressed in another fashion

option F is is wrong also as expanding would give 6 + 3x which is different from 2x + 6

Answer:

$41.685        

Step-by-step explanation:

Given:-

- The material cost per square foot, C = $1.25

- The two boxes have the dimensions:

         Box 1 : ( 9 x 9 x 10 ) in

         Box 2: ( 11 x 7 x 10 ) in

Find:-

so how much does a company save by choosing to make 50 of Box 2 instead of Box 1?

Solution:-

- We will first determine the surface areas of the two boxes Box 1 ( A1 ) & Box 2 (A2).

               A1 : 2*( 9*9) + 4*( 9*10) = 522 in^2 = 43.5 ft^2

               A2 : 2*(11*7) + 2*(11*10) + 2*(7*10) = 514 in^2 = 42.833 ft^2

- Determine the cost for each box:

               Cost of box 1 = A1*C = 43.5*$1.25 = $54.375

               Cost of box 2 = A2*C = 42.833*$1.25 = $53.5413

- The amount saved by the company by choosing to make 50 Box 2 as compared to 50 Box 1:

               Amount saved = 50*(Cost of box 1 - Cost of box 2)

                                         = 50*( 54.375 - 53.5413 )

                                         = $41.685        

Final answer:

There are 6 strawberries in the bowl.

Explanation:

To find the number of strawberries in the bowl, we can set up an equation based on the given information. Let's assume the number of strawberries is S.

The problem states that there are 3 times as many blueberries as strawberries, so we can write this as:

18 = 3S.

To solve for S (the number of strawberries), we can divide both sides of the equation by 3:

S = 6.

Therefore, there are 6 strawberries in the bowl.

Step-by-step explanation:

x + y = 6 ...................equation 1

x - y = 10 ..................equation 2

Solving equation 1 and 2

x + y = 6

x - y = 10

2x = 16

x = 16 /2

Therefore x = 8

Now

putting x = 8 in equation 1

8 + y = 6

y = 6 -8

y = -2

hope it was helpful :)

Answer:

x=8 and y= -2

Step-by-step explanation:

x+y=6

x-y=10      +              ( add them together)

-----------------

2x=16                          ( substitute/ plug x back in )

x=8

8+y=6

8-y=10

y=-2

Answer:

a) No there is no certain number of texts when two plans cost the same

b) On plan A 1 text and on plan B 2 text

Step-by-step explanation:

Let us calculate the per text charge for both the plans

Plan A

Total monthly charge of the plan [tex]= 5[/tex] dollars

Number of cents is a dollar [tex]= 100[/tex]

Total cents in five dollars [tex]= 5* 100 = 500[/tex] cents

Total number of days in a month [tex]= 30[/tex]

Charge per day

[tex]= \frac{500}{30} \\= \frac{50}{3} \\= 16.67[/tex]

Now, if only one text is send in a day, the total charge of the text will be

[tex]16.67 + 3[/tex]

[tex]19.67[/tex] cents per text or [tex]20[/tex] cents per text

Plan B

No charge for the month + $ [tex]10[/tex] cents per text

[tex]=[/tex]  $ [tex]10[/tex] cents per text

a) No there is no certain number of texts when two plans cost the same

b) On plan A 1 text and on plan B 2 text

Answer:

120

Step-by-step explanation:

Each time you add 40 to gas(oz)

Answer: 120 ounces of gas

Step-by-step explanation: Given: 40 ounces of gas to 1 ounce of oil

We need to find: __ ounces of gas to 3 ounces of oil

What we know:

1 × 40 = 40 ounces of gas

2 × 40 = 80 ounces of gas

3 × 40 = 120 ounces of gas

So, all you needed to do was multiply 3 times 40 to get 120 ounces of gas.

Conclusion: The answer is 120 ounces of gas.

Answer:

A waterfall has a height of 1500 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet per second. The​ height, h, of the pebble after t seconds is given by the equation h =−16t^2+24t+1500. How long after the pebble is thrown will it hit the​ ground?

Pebble will hit the ground after 10.46 seconds.

Step-by-step explanation:

Given:

The​ height, "h" of the pebble after t seconds, "h" = −16t^2+24t+1500

We have to find the time it will take to hit the ground.

For this we have to put h = 0 and solve the quadratic.

Quadratic formula:

⇒ Standard equation : [tex]ax^2+bx+c=0[/tex]

⇒ [tex]x =\frac{-b\pm \sqrt{(b)^2-4ac} }{2a}[/tex]

Now,

Solving the above equation with quadratic formula after comparing its values with the standard equation.

⇒ [tex]a=-16,\ b=24,\ c=1500[/tex]

⇒ [tex]t =\frac{-b\pm \sqrt{(b)^2-4ac} }{2a}[/tex]

⇒ [tex]t =\frac{-24\pm \sqrt{(24)^2-4(-16)(1500)} }{2(-16)}[/tex]

⇒ [tex]t =\frac{-24\pm \sqrt{576+96,000} }{-32}[/tex]

⇒ [tex]t =\frac{-24\pm(310.76)}{-32}[/tex]

⇒ [tex]t =\frac{-24+(310.76)}{-32}[/tex]                         ⇒ [tex]t =\frac{-24-(310.76)}{-32}[/tex]

⇒ [tex]t =-\frac{286.76}{32}[/tex]                                ⇒ [tex]t =\frac{334.76}{32}[/tex]

⇒ [tex]t=-8.96\ sec[/tex]                            ⇒ [tex]t=10.46\ sec[/tex]

Discarding the negative values.

The pebble will hit the ground after 10.46 seconds.

Answer:

b) It is the common difference.

Step-by-step explanation:

In arithmetic sequence the difference between one term and other term is constant. The slope of the line related to the arithmetic sequence is Common Difference.

In arithmetic sequence the difference between one term and other term is constant

We need to find how slope of the line related to the arithmetic sequence.

A common difference is a difference between any term and its preceding term in an arithmetic sequence. The slope of the line related to the arithmetic sequence is common difference.

Therefore common difference is related to arithmetic sequence.

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Answer:

35

Step-by-step explanation:

You would have to get rid of the 7. To do that you would divide each side by 7 to get s=35

Answer:

13 cm

Step-by-step explanation:

Volumes should be equal

20 × 70 × 29 = 3.14 × 31² × h

h = 13.4546683723 cm

Answer:

It is A.

Look at the attachment down below:

Step-by-step explanation:

The equation is used to find the unknown length (a) will be 17² =15² + a². Then the correct option is A.

The Pythagoras theorem states that the sum of two squares equals the squared of the longest side.

The Pythagoras theorem formula is given as

H² = P² + B²

A right triangle has a side with length 15 meters and a hypotenuse with length 17 meters.

The other side is labeled a.

17² =15² + a²

Then the correct option is A.

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Answer:

A =176 cm^2

Step-by-step explanation:

The area of a trapezoid is found by

A =1/2 (b1+b2) *h

where b1 and b2 are the lengths of the bases

A =1/2(12+10) *16

A = 1/2(22)*16

A =176 cm^2

Answer:

? = [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Take two points in this case, (-2,4) and (0,5)

Use rise over run for slope to find ?

5-4/0+2 = 1/2

To find the other blank, enter one of the two points into the existing equation.

y = 1/2x + b

5 = 0 + b

b = 5

The equation is y = 1/2x + 5

If the sample mean is close to 32 ounces or the sample standard deviation is large, it is less likely that we will reject the null hypothesis.

To determine if there is sufficient evidence to conclude that the mean amount of milk in cartons is less than 32 ounces, we would conduct a hypothesis test. The null hypothesis (H0) would state that the mean amount of milk in cartons is at least 32 ounces, while the alternative hypothesis (Ha) would state that the mean amount is less than 32 ounces.

The null hypothesis: [tex]\( H_0: \mu \geq 32 \)[/tex]

The alternative hypothesis: [tex]\( H_a: \mu < 32 \)[/tex]

Here is the step-by-step process to conduct the hypothesis test:

1. **Identify the sample mean [tex](\( \bar{x} \))[/tex] and the sample standard deviation (s).** These values would be calculated from the sample of 22 cartons.

2. **Calculate the test statistic (t-score).** The formula for the t-score in a one-sample t-test is:

[tex]\[ t = \frac{\bar{x} - \mu_0}{\frac{s}{\sqrt{n}}} \][/tex]

where [tex]\( \mu_0 \)[/tex] is the hypothesized mean (32 ounces in this case), [tex]\( \bar{x} \)[/tex] is the sample mean, [tex]\( s \)[/tex] is the sample standard deviation, and [tex]\( n \)[/tex] is the sample size.

3. **Determine the degrees of freedom (df).** For a one-sample t-test, the degrees of freedom are [tex]\( n - 1 \)[/tex], where [tex]\( n \)[/tex] is the sample size. In this case, [tex]\( df = 22 - 1 = 21 \)[/tex].

4. **Find the critical t-value or p-value.** Using the degrees of freedom, we can find the critical t-value from a t-distribution table or calculate the p-value. The significance level (α) is typically set at 0.05 for such tests.

5. **Make a decision.** If the test statistic is less than the critical t-value or if the p-value is less than α, we reject the null hypothesis in favor of the alternative hypothesis. This would mean there is sufficient evidence to conclude that the mean amount of milk in cartons is less than 32 ounces.

6. **Calculate the p-value.** The p-value is the probability of observing a sample mean at least as extreme as the one observed, assuming the null hypothesis is true. It can be calculated using statistical software or a t-distribution table.

7. **Report the results.** If the p-value is less than α, we report that there is sufficient evidence to conclude that the mean amount of milk in cartons is less than 32 ounces. If the p-value is greater than α, we report that there is not enough evidence to conclude that the mean amount is less than 32 ounces.

Without the actual sample data (sample mean and sample standard deviation), we cannot perform the calculations or make a conclusion. However, if the sample mean is substantially less than 32 ounces and the sample standard deviation is small, it is more likely that we will reject the null hypothesis. Conversely, if the sample mean is close to 32 ounces or the sample standard deviation is large, it is less likely that we will reject the null hypothesis.

Answer:

6π in

Step-by-step explanation:

Length of arc

[tex] = 2\pi \: r \frac{120}{360} [/tex]

[tex] = 2\pi \times 9 \times \frac{1}{3} [/tex]

[tex] = 6\pi[/tex] in

Answer:

(5x−2) and (x+2)

Step-by-step explanation:

Answer:

(5x-2)(x+2)

If you want to check your answer mulitply (5x-2)(x+2) and you get the same

trinomial 5x2 + 8x - 4.

Answer:

188 children and 145 adults were admitted in the park.

Step-by-step explanation:

Given:

The admission fee at an amusement park is $1.50 for children and $4 for adults.

Total $862 collected on a certain day when 333 people enter the park.

Now, to find the children and adults admitted in the park.

Let the number of children admitted be [tex]x.[/tex]

And the the number of adults admitted be [tex]y.[/tex]

So, the total people enter the park:

[tex]x+y=333\\\\x=333-y\ \ \ ...(1)[/tex]

Thus, the total amount collected of the admission fee:

[tex]1.50(x)+4(y)=862\\\\[/tex]

Substituting the value of [tex]x[/tex] from equation (1):

[tex]1.50(333-y)+4(y)=862\\\\499.50-1.50y+4y=862\\\\499.50+2.50y=862\\\\Subtracting\ both\ sides\ by\ 499.50\ we\ get:\\\\2.50y=362.50\\\\Dividing\ both\ sides\ by\ 2.50\ we\ get:\\\\y=145.[/tex]

Thus, the number of adults = 145.

Now, to get the number of children by substituting the value of [tex]y[/tex] in equation (1) we get:

[tex]x=333-y\\\\x=333-145\\\\x=188.[/tex]

Hence, the number of children = 188.

Therefore, 188 children and 145 adults were admitted in the park.

Answer: the value us 2.064

Step-by-step explanation:

To determine the t value, we would need the t distribution table. Since degree of freedom is known as 24, we would determine alpha/2

A 95% confidence level is 95/100 = 0.95

1 - alpha = 0.95

alpha = 1 - 0.95

alpha = 0.05

alpha/2 = 0.05/2 = 0.025

this is the area to the left. The area to the right 1 - 0.025 = 0.975

alpha/2 = 0.975

Looking at the t distribution table, the t value is

2.064

The surface area of the cereal box is 2600 square centimeters. Volume of the cereal box is 7500 cubic centimeters.

The surface area of the cereal box in the image is 2600 square centimeters. The volume of the cereal box is 7500 cubic centimeters.

To calculate the surface area, we need to find the area of each of the six faces of the box and add them all up. The two largest faces have dimensions 25 cm by 30 cm, so their area is 25 * 30 = 750 square centimeters each. The two next-largest faces have dimensions 10 cm by 30 cm, so their area is 10 * 30 = 300 square centimeters each. The two smallest faces have dimensions 25 cm by 10 cm, so their area is 25 * 10 = 250 square centimeters each. Therefore, the total surface area of the box is 750 + 750 + 300 + 300 + 250 + 250 = 2600 square centimeters.

To calculate the volume, we simply multiply the length, width, and height of the box together. The length is 25 cm, the width is 10 cm, and the height is 30 cm, so the volume is 25 * 10 * 30 = 7500 cubic centimeters.

Here is a table summarizing the surface area and volume of the cereal box:

|      Property   |                 Value                 |

|--------------------|--------------------------------------|

| Surface area | 2600 square centimeters|

|      Volume     |  7500 cubic centimeters |

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The question is incomplete! Complete question along with answer and step by step explanation is provided below.

Question:

An aquarium tank can hold 6600 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 55 minutes. The second pipe can fill the tank in 66 minutes by itself. When both pipes are working together, how long does it take them to fill the tank?

Given Information:

Time to fill tank by first pipe = 55 minutes

Time to fill tank by first pipe = 66 minutes

Total capacity  of tank = 6600 liters

Required Information:

Time required to fill tank when both pipes are working together = ?

Answer:

Time required to fill tank when both pipes are working together = 30 mins

Step-by-step explanation:

The rate of filling the tank of the first pipe is,

first pipe = [tex]\frac{6600}{55} = 120[/tex] [tex]L/m[/tex]

The rate of filling the tank of the second pipe is,

second pipe = [tex]\frac{6600}{66}= 100[/tex] [tex]L/m[/tex]

Let x is the time to fill the tank when both pipes are used so the equation becomes,

[tex]120 + 100 = \frac{6600}{x}[/tex]

[tex]120x + 100x = 6600[/tex]

[tex]220x = 6600[/tex]

[tex]x = \frac{6600}{220}[/tex]

[tex]x = 30[/tex] [tex]mins[/tex]

Therefore, it would take 30 minutes to fill the entire tank when both pipes are used to fill the tank.