If the expression x - 3 has a value of -5, then what value represents the expression 3x - 9?

Mathematics

1 answer:

ddd [48]3 years ago

8 0

3(-2) -9
-6-9
-15

-15 Is the value that represents the last expression

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there is a canned food sale at the supermarket. a case of 24 cans of peas is prices at $19.68. at the same rate what is the pric

Nonamiya [84]

Answer:

8.2

Step-by-step explanation:

We can find the unit rate of this problem by dividing 18.68 by 24 to get .82. .82*10 is equal to 8.2.

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2 years ago

When a deposit of $1000 is made into an account paying 2% interest, compounded annually, the balance, $B, in the account after t

labwork [276]

Answer:

The average rate of change in the balance over the interval t = 0 to t = 5 is of $20.82 a year. This means that the balance increased by $20.82 a year over the interval t = 0 to t = 5.

Step-by-step explanation:

Given a function y, the average rate of change S of y=f(x) in an interval $(x_{s}, x_{f})$ will be given by the following equation:

$S = \frac{f(x_{f}) - f(x_{s})}{x_{f} - x_{s}}$

In this problem, we have that:

$B(t) = 1000(1.02)^{t}$

Find the average rate of change in the balance over the interval t = 0 to t = 5.

$B(0) = 1000(1.02)^{0} = 1000$

$B(5) = 1000(1.02)^{5} = 1104.08$

Then

$S = \frac{1104.08 - 1000}{5-0} = 20.82$

The average rate of change in the balance over the interval t = 0 to t = 5 is of $20.82 a year. This means that the balance increased by $20.82 a year over the interval t = 0 to t = 5.

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3 years ago

What is the following sum?<br> 5(3squareroot x) +9 (3squareroot x)

Volgvan

$\sf{14(\sqrt[3]{x}) }$