Kelvin ordered four pizzas for a birthday party. The pizzas were cut in eights. How many slices were there?

Step-by-step explanation:

2x+15 = 5x-43

- Add 43 to both sides

2x+58 = 5x

- Subtract 2x from each side

58 = 3x

- Divide by 3

Answer:

0.25

Step-by-step explanation:

Half of a tenth in 5 hundredths.

To find the midpoint of 0.2 and 0.3, think of it as 20 and 30.

What would be the midpoint of 20 and 30? 25.

Therefore, 0.25 would be the midpoint of 0.2 and 0.3

-kiniwih426

Answer:

16 times

Step-by-step explanation:

Membership cost:

C = 135 + 2x

Non-members:

C = 11x

____

135 + 2x = 11x

135 = 9x

x = 15

The cost would be the same after renting 15 times, so after 16 times the cost would be cheaper for a member.

Answer: two hundred and fifty thousand people were left without homes in the earthquake.

They were there for every major disaster.

Step-by-step explanation:

The question is an illustration of related rates.

The rate of change between you and the ball is 0.01 rad per second

I added an attachment to illustrate the given parameters.

The representations on the attachment are:

[tex]\mathbf{x = 100\ m}[/tex]

[tex]\mathbf{\frac{dy}{dt} = 2\ ms^{-1}}[/tex] ---- the rate

[tex]\mathbf{\theta = \frac{\pi}{4}}[/tex]

First, we calculate the vertical distance (y) using tangent ratio

[tex]\mathbf{\tan(\theta) = \frac{y}{x}}[/tex]

Substitute 100 for x

[tex]\mathbf{y = 100\tan(\theta) }[/tex]

[tex]\mathbf{\tan(\theta) = \frac{y}{100}}[/tex]

Differentiate both sides with respect to time (t)

[tex]\mathbf{ \sec^2(\theta) \cdot \frac{d\theta}{dt} = \frac{1}{100} \cdot \frac{dy}{dt}}[/tex]

Substitute values for the rates and [tex]\mathbf{\theta }[/tex]

[tex]\mathbf{ \sec^2(\pi/4) \cdot \frac{d\theta}{dt} = \frac{1}{100} \cdot 2}[/tex]

This gives

[tex]\mathbf{ (\sqrt 2)^2 \cdot \frac{d\theta}{dt} = \frac{1}{100} \cdot 2}[/tex]

[tex]\mathbf{ 2 \cdot \frac{d\theta}{dt} = \frac{1}{100} \cdot 2}[/tex]

Divide both sides by 2

[tex]\mathbf{ \frac{d\theta}{dt} = \frac{1}{100} }[/tex]

[tex]\mathbf{ \frac{d\theta}{dt} = 0.01 }[/tex]

Hence, the rate of change between you and the ball is 0.01 rad per second

Read more about related rates at:

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A.p:40 his friends alex

Answer:

the answer is p<40

Step-by-step explanation:

(: ur welcome

Answer:

1.5 pounds more.

Step-by-step explanation:

3.75 - 2.25

= 1.50.

Answer:

1.50 pounds

Step-by-step explanation:

Paula orders a macaroni salad and coleslaw each weighing 3.75 and 2.25 pounds respectively

so, to find how many more pounds of macaroni salad than coleslaw we do,

3.75-2.25=1.50

therefore,  macaroni salad has 1.50 pounds more than coleslaw.

Answer:

b

Step-by-step explanation:

10*10=100

100+140=240

240/5=48

Answer:

it's BBBBBBBBBBBBBBBBBB) 48

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

y=4x+7

The correct reason for each step in the solution of the equation would be as follows:

12 − 5x + 6x = 4 - Given

12 + x = 4 - Combine Like Terms

x= −8 - Subtraction Property of Equality

Hope this answers the question. Have a nice day.

Answer:

[tex] if \: \frac{x - 5}{8} = 2x - 1) \times 8 \\ x - 5 = 16x - 8 \\ 15x = 3 \\ x = \frac{15}{3} \\ \therefore \: x = 5 \\ if \: your \: quetion \: is \\ x - \frac{5}{8} = 2x - 1) \times 8 \\ 8x - 5 = 16x - 8 \\ 8x = 3 \\ x = \frac{3}{8} \\ try \: to \: use \: brackets \: next \: time[/tex]

Answer:

Please refer to the attached photo.

Step-by-step explanation:

Table of values

[tex]\begin{array}{|c|c|c|c|c|c|c|c|c|c|c|c|} \hline \sf x &\sf -8 &\sf -7 &\sf -6 &\sf -5 &\sf -4 &\sf -3 &\sf -2 &\sf -1 &\sf 0 &\sf 1 &\sf 2 \\\hline \sf y &\sf 3 &\sf 2 &\sf 1 &\sf 0 &\sf 1 &\sf 2 &\sf 3 &\sf 4 &\sf 5 &\sf 6 &\sf 7 \\\hline \end{array}[/tex]

Answer:

B. 5 in.

Step-by-step explanation:

Answer:

either 8 or 4

Step-by-step explanation:

because it can't be 6 or 5

Answer:

the error(s) is from the step 2

Step-by-step explanation:

3r - 12 = 2r - 3  +4r

3r - 4r -2r = 12 - 3

-3r = 9

r = 9 : (-3)

r = -3

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

the error(s) is from the step 2

Answer:

The domain is -11 < x < 4 or in interval notation it is (-11, 4).

Step-by-step explanation:

The domain is the set of possible values of x.

Here the open circles at each end mean that these values are not included.

deu ruim  aqui pq eu não sei

Step-by-step explanation:

Answer:

Step-by-step explanation:

The amount of change is:

The time difference in years:

The annual rate of change is the ratio of the difference in amount to the time difference:

Answer:

y = 120x + 100

x = y/120 - 5/6

Step-by-step explanation:

[tex]20 - 4 \times 4 \div 2 + 3[/tex]

15

ray4918 here to help

Answer:

14

Step-by-step explanation:

20-4×4÷2+2=14

you change the words into symbols

Step-by-step explanation:

Solution

Number of rows = number of columns = r

:: r × r = 1296

In other words,

r square 2 = 1296

now solve in prime factorization,

the answer is 36

Answer:

1. 3, 12, 48, 192, 768               Ratio: x4

2. 8, 16, 32, 64, 128                Ratio: x2

3. 120, 60, 30, 15, 7.5             Ratio: ÷2

4. 5, 10, 20, 40, 80, 160          Ratio: x2

5.  1.3?, 4, 12, 36, 108, 324      Ratio: x3

Hope this helps!

I'm not sure about the first one on question 5 though.

Answer:

The tax would be roughly $37.79, which means the laptop would be overall $541.77.

Answer:

(2xy)²

Step-by-step explanation:

please mark me as brainliest

Answer:

-150

Cause right now it's negative I think

Yes

Answer:

well I think it is none of these because the square root would be 9^2

Step-by-step explanation:

Answer:

9^2

Step-by-step explanation

if the are is 81 then you have to think for th numbers like if the are was 20

it would be 5x4=20cm sorry i can't type in anything special  ti won'y let me

Answer:

b = c/3 + 2/3

Step-by-step explanation:

3b - 4/2 = c

the goal is to have b all by itself on one side of the equals sign.

start by moving the fraction over to where c is by adding.

3b = c + 4/2

adding -4/2 and +4/2 together makes it a 0 on the b side so there's no need to write anything in that space anymore.

Now 3b are next to each other which means they are multiplying. To move 3 we need to do the opposite (divide by 3 on both sides of the equal sign)

b = c/3 + 2/3

notice I divided both c and 4/2 by 3. 4/2 = 2 so I changed it to 2, then divided by 3

Answer:

17/15

Step-by-step explanation:

[tex] \frac{4}{5} - ( - \frac{1}{3}) \\ = \frac{4}{5} + \frac{1}{3} \\ = \frac{12 + 5}{15} \\ = \frac{17}{15} \\ = 1 \frac{2}{15} [/tex]

The interest earned in five years is $1400.

Simple interest is interest calculated on the principal portion of a loan or the original contribution to a saving account.

A = P(1 + rt)

Where,

A is the final amount

P is the initial principal balance

r is the annual interest rate

t is time(in years)

According to the given question

We have

Initial Principal balance, P = $7000

Time, t = 5years

Annual interest rate, r = 4% = 0.04

Therefore, the amount in five years is given by

A =  7000(1 + 0.04(5))

A = 7000(1 + 0.2)

A = 7000(1.2)

A = $8400

Now, the interest earned in five years

S.I = A - P

⇒ S.I = $8400 - $7000

⇒ S.I = $1400

Hence, the interest earned in five years is $1400.

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The percentage error in the deer population is 17%

Actual population = 21300

Estimated population = 17600

The percentage error will be calculated by subtracting the estimated population from the actual population and then dividing the result. This will be:

= (Actual population - Estimated population) / Actual population × 100

= (21300 - 17600) / 21300 × 100

= 3700/21300 × 100

= 0.17 × 100

= 17%

Therefore, the percentage error in the deer population is 17%

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