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Xelga [282]
3 years ago
5

A number is multiplied by 4. That result is added to 12. The final number is 40.

Mathematics
1 answer:
NARA [144]3 years ago
5 0

Answer:

B) 7

Step-by-step explanation:

Let the number be x

4x + 12 = 40

4x = 40 -12

4x =28

x = 28/4

x = 7

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Step-by-step explanation:

The 6x^2 because 6  is not a perfect square.

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a coin collector has 36 dimes and nickels with a total face value of $2.80. they are actually worth a lot more. how many of each
Juliette [100K]

Answer:

16 nickels and 20 dimes

Step-by-step explanation:

16x5=80

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280 cents = $2.80

8 0
3 years ago
I NEED HELP PLEASE, THANKS! :) Heather invests $4,900 in an account with a 3.5% interest rate, making no other deposits or withd
Alex

Answer:    $5,828.28

<u>Step-by-step explanation:</u>

Use the Compound Interest formula:     A=P(1+\frac{r}{n})^{nt}       where

  • A is the accrued amount (balance)
  • P is the principal (initial amount invested)
  • r is the interest rate (in decimal form)
  • n is the number of times compounded each year
  • t is the time of the investment (in years)

Given: P = 4,900

           r = 3.5% (0.035)

           n = 2

           t = 5

A=4,900\bigg(1+\dfrac{0.035}{2}\bigg)^{2(5)}\\\\\\.\qquad = 4900(1.0175)^{10}\\\\\\.\qquad = \large\boxed{5,828.28}\\

5 0
3 years ago
Which is the largest number?<br> ОА. 1.9x 106<br> ОВ. 2.5 x 105<br> Ос. 8.7 x 102<br> OD. 5.8 x 103
DanielleElmas [232]
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4 0
3 years ago
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Leni [432]

Answer:

(-4, 5.5)

Step-by-step explanation:

1. put your Xs and Ys over 2

2. add them together

3. Divide

4. Simplify

5. Turn fraction into decimal

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6 0
2 years ago
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