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3 years ago

What is the value of the expression when n = 3?

Mathematics

2 answers:

CaHeK987 [17]3 years ago

8 0

Answer:

The value = 54

Step-by-step explanation:

–2n(5+n–8–3n) = –2(3)(5+3-8-3(3)) = –6(5+3-8-9)=–30–18+48+54=54

I hope I helped you^_^

lesya [120]3 years ago

4 0

I’m trying to figure this out too

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Type the correct answer in the box

SVEN [57.7K]

Answer:

$log\boxed{7}$

Step-by-step explanation:

$log\frac{14}{3}+log\frac{11}{5}-log\frac{22}{15}$

$=log\bigg(\frac{14}{3}*\frac{11}{5}\bigg)-log\frac{22}{15}$

$=log\bigg(\frac{14*11}{3*5}\bigg)-log\frac{22}{15}$

$=log\bigg(\frac{154}{15}\bigg)-log\frac{22}{15}$

$=log\bigg(\frac{154}{15}\div\frac{22}{15}\bigg)$

$=log\bigg(\frac{154}{15}\times\frac{15}{22}\bigg)$

$=log\bigg(\frac{154}{22}\bigg)$

$=log\boxed{7}$

4 0

3 years ago

If f(x) = x2 + x - 8, find f(-3).

dalvyx [7]

Answer:

-17

Step-by-step explanation:

it's telling you to replace x with -3.

You have to replace all the x's with -3.

(-3)2 + (-3) - 8 = -17

5 0

3 years ago

Maureen earned some money doing odd jobs last summer and put it in a savings account that earns 9% interest compounded quarterly

ivolga24 [154]

Answer:

Maureen earned $123.19 doing odd jobs

Step-by-step explanation:

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 unit year and t is the time in years for which the money is invested or borrowed.

In this question:

Compounded quarterly means that $n = 4$