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3 years ago

Solve these two equations

Mathematics

1 answer:

tangare [24]3 years ago

8 0

Answer:

a.(2/7,31/7) b.(97,71)

Step-by-step explanation:

im not writing all the work i did its just substitution of the value of x and y from the second equation to the first

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The area of the larger circle is??

nevsk [136]

radius of small circle = 16 m

radius of large circle is doubled so it will be 32 m

Area of the larger circle = π x 32^2 = 1,204π m^2

answer

1,204π m^2

7 0

2 years ago

Read 2 more answers

I need help, I don’t need an explanation, just the answer

meriva

Answer:

$x = 48 \: \: \: \: \: \: y = 16$

Step-by-step explanation:

$y = - x + 4y$

$y + x = 4y$

$y + x - 4y = 0$

$- 3y + x = 0$

$- x + 4y = 16$

$- 3y + x = 0$

$- 3y = - x$

$y = - \frac{1}{3} ( - 1)x$

$y = \frac{1}{3} x$

$4 \times ( \frac{1}{3} )x - x = 16$

$\frac{1}{3}x = 16$

$x = 48$

$y = \frac{1}{3} \times 48$

$y = 16$

Hope this is correct and helpful

HAVE A GOOD DAY!

5 0

2 years ago

Read 2 more answers

Justin deposited $2,000 into an account 5 years ago. Simple interest was paid on the account. He has just withdrawn $2,876. What

sdas [7]

Answer: $8.76\%$

Step-by-step explanation:

The formula to find the final amount after getting simple interest :

$A=P(1+rt)$ , where P is the principal amount , r is rate of interest ( in decimal )and t is time(years).

Given : Justin deposited $2,000 into an account 5 years ago.

i.e. P = $2,000 and t= 5 years

He has just withdrawn $2,876.

i.e. we assume that A = $2876

Now, Put all the values in the formula , we get

$(2876)=(2000)(1+r(5))\\\\\Rightarrow\ 1+5r=\dfrac{2876}{2000}\\\\\Rightarrow\ 1+5r=1.438\\\\\Righhtarrow\ 5r=0.438\\\\\Rightarrow\ r=\dfrac{0.438}{5}=0.0876$

In percent, $r=0.0876\times100=8.76\%$

hence, He earned $8.76\%$ of interest on account.

6 0

3 years ago

If 10% of a number is 8, what is 50% of the number?

Over [174]

Answer:

50% of the number is 40

Step-by-step explanation:

8 * 5 = 40

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3 years ago

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A homeowner wants to carpet three rooms that measure 12 feet by 12 feet, 10 feet by 14 feet, and 21 feet by 20 feet. how many sq

LiRa [457]

First find the square feet of each room and then add those together:

12 feet x 12 feet = 144 square feet

10 feet x 14 feet = 140 square feet

21 feet x 20 feet = 420 square feet

144 + 140 + 420 = 704 square feet total.

1 square foot = 0.111 square yards.

Multiply total square feet by 0.1111 to find the square yards:

704 x 0.111 = 78.2 square yards. Round your answer as needed.

5 0

2 years ago