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2 years ago

If f(x)=-2x-3 what is f(r+2) ?

Mathematics

1 answer:

fiasKO [112]2 years ago

4 0

Answer:

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

when x is r + 2 :

$f(r + 2) = - 2(r + 2) - 3 \\ = - 2r - 4 - 3 \\ = - 2r - 7 \\ \\ { \boxed{ \boxed{f(r + 2) = - 2r - 7}}}$

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Avery and Caden have saved $27,000 towards a down payment on a house. They want to keep some of the money in a bank account that

Thepotemich [5.8K]

Answer:

$6750 in the bank account and $20,250 in the stock fund

Step-by-step explanation:

If B is the money they put in the bank and S is the amount they put in the stock fund, then:

B + S = 27000

1.024 B + 1.072 S = 1.06 × 27000

Solving the system of equations:

1.024 (27000 − S) + 1.072 S = 28620

27648 − 1.024 S + 1.072 S = 28620

0.048 S = 972

S = 20250

B = 27000 − S

B = 6750

They should put $6750 in the bank account and $20,250 in the stock fund.

6 0

2 years ago

Divide $8 in the ratio 2:3

miss Akunina [59]

Answer:

Step-by-step explanation:

divide $8 in the ratio 2:3

8 : (2 + 3) = 1.6 (unity)

1.6 * 2 = 3.2 (ratio2)

1.6 * 3 = 4.8 (ratio 3)

----------

3.2 + 4.8 = 8

the answer is good

6 0

2 years ago

What is the average rate of change of the function f(x)=480(0.3)x from x = 1 to x = 5?

m_a_m_a [10]

aerage rate of change is just the slope from the endpoints of teh interval

ie $averagerateofchange=slope=\frac{f(5)-f(1)}{5-1}$

assuming you mean $f(x)=480(0.3)^x$

evalaute f(5) and f(1)

f(5)=480(0.3)^5=1.1664

f(1)=480(0.3)^1=144

average rate of change=(1.1664-144)/(5-1)=-35.7084

the average rate of change of the function on the interval x=1 to x=5 is -35.7084

8 0

2 years ago

Below is a scale drawing of the town swimming pool in the drawing the longest side of the pool has length of 10 inches Paco crea

quester [9]

Answer:

2:1 that is 2 inches in real life is equal to 1 inch in the drawing.

Step-by-step explanation:

We are given the following in the question:

Longest side of the pool = 10 inches

Longest side of the pool in drawing = 5 inches

Scale:

We find the ratio of the real length of pool and the measurement of the length of the pool in the drawing.

$\text{Scale} = \dfrac{10\text{ inches}}{5\text{ inches}} = 2:1$

Thus, we can say Paco's new drawing follows a scale of 2:1 that is 2 inches in real life is equal to 1 inch in the drawing.

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2 years ago

Read 2 more answers

Will practices piano for 1/4 hour,1/2 hour or 3/4 hour every other day if a line plot shows two Xs above each value of time what

xz_007 [3.2K]

The to this question is 5/4 because i found the common denominator and added my numerator. so thats how i got my answer

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2 years ago