3 years ago

Please help! 21 is 30% of what number? Enter your answer in the box.

Mathematics

2 answers:

Fiesta28 [93]3 years ago

8 0

I think the answer is 70

yulyashka [42]3 years ago

4 0

21 is 30 percent of 70

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How many years will it take for an initial investment of $20,000 to grow to $30,000? Assume a rate of interest of 6% compounded

Genrish500 [490]

F = Pe^(rt)

F is the final amount

P is the principal

r is the interest rate

t is the time in years

30000=20000 e^(.06t)

divide by 20000

3/2 = e ^ .06t

take the ln on each side

ln(3/2) = .06t

divide by .06

ln(3/2)/.06 =t

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4 years ago

For which equation would x = 5 be a solution?

tresset_1 [31]

Answer:

The second option.

3x + 6 = 21.

Step-by-step explanation:

3x + 6 = 21.

If x = 5, plug it in.

3 · 5 + 6 = 21

15 + 6 = 21

Hope this helps,

Davinia.

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3 years ago

Evaluate expression- Which of these answer choices are correct answer to the question

romanna [79]

Answer:

i=10^5

eq is 2^n*i

hence 2^3*10^5

8*100000

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4 0

3 years ago

Solve the following: 2(5x-3)

Otrada [13]

Answer:

The vale of x is 3/5.

Step-by-step explanation:

First you have to expand out :

$2(5x - 3)$

$= 2(5x) - 2(3)$

$= 10x - 6$

Next you have to solve it by adding 6 to both sides :

Let expression = 0,

$10x - 6 = 0$

$10x - 6 + 6 = 0 + 6$

$10x = 6$

$x = \frac{6}{10}$

$x = \frac{3}{5}$

6 0

3 years ago

Read 2 more answers

Picture attached please help!

Aleonysh [2.5K]

The answer is 12.56.

I just used the area of circle formula

The formula is 3.14 x r^2

2 x 2 is 4

4 x 3.14 is 12.56

Pls mark brainleist

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3 years ago