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3 years ago

Josh filled his gas tank three times last week. Here are the amounts of gas he bought (in gallons).

1 answer:

3 0

Okay so pretty much what you need to do is add the three numbers together in order to get your total. 10.2+13.75+12= 35.95 gallons. 35.95 would be the total amount of gallons of gas that was bought last week.

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If f(x)=x^2 and g(x)=1/2x+3 find g(f(-1))

telo118 [61]

Answer:

1/5

Step-by-step explanation:

F(x)=x^2

g(x)=1/(2x+3)

g(f(-1))=?

x=-1→f(-1)=(-1)^2→f(-1)=1

g(f(-1))=g(1)=1/[2(1)+3]=1/(2+3)→g(f(-1))=1/5

8 0

3 years ago

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It takes Kim 7 hours to proof a chapter of Hawkes Learning Systems' Introductory Algebra book and it takes Harding 2 hours. How

Olegator [25]

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3 years ago

A company knows that unit cost C and unit revenue R from the production and sale of x units are related by Upper C equals StartF

levacccp [35]

Answer:

$990 per unit.

Step-by-step explanation:

The Unit Cost (C) and Unit Revenue R from the production and sale of x units are related by the function:

$C=\dfrac{R^2}{220000} +3221$

We are required to find the rate of change of revenue per unit when the cost per unit is changing by $9 and the revenue is $1,000.

Rate of Change of C,

$\dfrac{dC}{dt}=\dfrac{R}{110000} \dfrac{dR}{dt} \\\dfrac{dC}{dt}=\$9, R=\$1000\\9=\dfrac{1000}{110000} \dfrac{dR}{dt}\\\dfrac{dR}{dt}=9 \div \dfrac{1000}{110000}\\=9 X \dfrac{110000}{1000}\\\dfrac{dR}{dt}=\$990 $ per unit$$

The Revenue is changing at a rate of $990 per unit.

6 0

3 years ago

How to substitute x=-2 and x=5 into 2x^2+6-20=0 to check my work

Komok [63]

First answer (x=-2)
...
(2)[(-2)^2]+6-20
2(4)+6-20
8+6-20
14-20
-6 (answer)

Second answer (x=5)
...
(2)[(-5)^2]+6-20
2(25)+6-20
50+6-20
56-20
36 (answer)
Hope this helps!

4 0

4 years ago

Subtract -28-47-12 please help!

xz_007 [3.2K]

Answer:-87

Step-by-step explanation:

8 0

4 years ago

Read 2 more answers