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3 years ago

How do you solve 7a+10=2a

Mathematics

2 answers:

amm18123 years ago

4 0

7a+10=2a -7a. -7a 10=-5a Divide by -5 and u get ur answer

sammy [17]3 years ago

3 0

Subtract 7a from both sides giving you 10=-5a and divide everything by 5. This gives you a=-2

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Compound interest Plz help!!!

liraira [26]

Answer:

a) $A(t) = 17500(1.0053)^{12t}$

b) The balance after 8 years will be of $29,069.

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

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

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

Loan of $17,500 means that $P = 17500$

6.4% interest rate means that $r = 0.064$

Compounded monthly means that $n = 12$ . So

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

$A(t) = 17500(1 + \frac{0.064}{12})^{12t}$

$A(t) = 17500(1.0053)^{12t}$

This is A(8). Then

$A(8) = 17500(1.0053)^{12*8} = 29069$

The balance after 8 years will be of $29,069.

8 0

2 years ago

Maura writes an expression equivalent to 8a - (-3 - 5a) - 2a. Her work is in the picture. In what step does Maura make a mistake

NISA [10]

Answer:

11a + 3

Step-by-step explanation:

Step 1 : 8a + 3 - 5a - 2a

error => - 5a

8a - (- 3 - 5a) - 2a =

= 8a + 3 + 5a - 2a

= (8a + 5a - 2a) + 3

= 11a + 3

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user100 [1]

Answer:

140·80=11200

Step-by-step explanation:

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140·80=11200

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Kaylis [27]

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