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3 years ago

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Mathematics

1 answer:

Fudgin [204]3 years ago

8 0

Answer:

Area = 153.8 cm/ m

Step-by-step explanation:

Area of circle = 22 ÷ 7 × r²

= 22 ÷ 7 × (7²)

= 22 ÷ 7 × 49

= 3.14 × 49

= 153.8 cm/ m

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Select all that apply.<br><br> Which of the following are equivalent ratios?

Sindrei [870]

8/12 = 12/16

step by step equation

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3 years ago

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PLEASE HELP

vampirchik [111]

Answer:

Step-by-step explanation:

Because when you add up the points you would get (4,3)

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2 years ago

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You are buying 12-packs of Mountain Dew for $\text{4.50}4.50 each and have a gift card worth $77. The function m\left(x\right)=4

poizon [28]

Answer:

$191

Step-by-step explanation:

The function is given by :

m(x) = 4.50x-7 ...(1)

Where

m(x) is the total cost if you buy x 12 packs of Mountain Dew.

We need to find the cost you pay to buy 44 12-packs of Mountain Dew

Put x = 44 in equation (1), we get :

m(x) = 4.50(44)-7

m(x) = 198-7

m(x) = $191

Hene, the cost for 44 12- packs of Mountain Dew is $191.

7 0

3 years ago

Make R the subject of the formula , A equals to P( l+r/100)

Mrrafil [7]

Answer:

r = 100( $\frac{A}{P}$ - 1 )

Step-by-step explanation:

Given

A = P(1 + $\frac{r}{100}$ ) ← divide both sides by P

$\frac{A}{P}$ = 1 + $\frac{r}{100}$ ( subtract 1 from both sides )

$\frac{P}{A}$ - 1 = $\frac{r}{100}$ ( multiply both sides by 100 )

100 ( $\frac{P}{A}$ - 1) = r

7 0

4 years ago

Giving brainliest to whoever can accurately solve these questions first.

lesantik [10]

1. The amount of money in the account after 10 years is 42,317.96 dollars.

2. it will take Pamela and Kevin 7.5 hours to complete the task together

<h3>How to find compound interest?</h3>

Question(1)

Using compound interest formula,

$A = p(1 + \frac{r}{n} )^{nt}$

where

p = principal
r = rate
n = number of times
t = time

Therefore,

p = 30,000

r = 3.5% = 0.035

t = 10

n = 1

Therefore,

$A = 30000(1+\frac{0.035}{1} )^{1X10}$

A = $42,317.96

Question 2:

Pamela takes 12 hours to complete a task.

Kelvin takes 20 hours to complete same task.

The time it will take both of them can be computed as follows:

using rate principle,

let

x = time it will take both of them to do the work together.

$\frac{1}{x}=\frac{1}{12} + \frac{1}{20}$

$\frac{1}{x}=\frac{20+12}{240}$

$\frac{1}{x}=\frac{32}{240}$

cross multiply

240 = 32x

x = 240 / 32

x = 7.5 hours

Therefore, it will take Pamela and Kevin 7.5 hours to complete the task together

learn more on compound interest and rate here: brainly.com/question/18104604

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3 0

2 years ago