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Bogdan [553]
2 years ago
7

A family wants to rent a car to go on vacation. Company A charges ​$70.50 and 18¢ per mile. Company B charges ​$40.50 and 10¢ pe

r mile. How much more does Company A charge for x miles than Company B​?
Mathematics
1 answer:
pav-90 [236]2 years ago
4 0

Answer:

add them together

Step-by-step explanation:

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The world's population has grown at an average rate of 1.9 percent per year since 1945. There were approximately 4 billion peopl
kkurt [141]

Answer:  f(t) = 4000000000( 1 .019)^t

Step-by-step explanation:

Here, According to the question,  The population of the world is 4 billion (approx).

Again According to the question, The world's population has grown at an average rate of 1.9 percent per year since 1945.

Therefore, after 1975 the growth rate will remains same.

Thus, the population of the world after t years,

f(t) = 4000000000( 1+\frac{1.9}{100} )^t   (By the formula A = P(1+\frac{r}{100})^t )

⇒f(t) = 4000000000( 1.019 )^t

Where 1.019 is the growth rate and 4 billion is the initial population.


6 0
3 years ago
Please show me the work!
Papessa [141]

Answer:

9/2π cm/s

Step-by-step explanation:

Volume of the spherical balloon V= 4/3πr³

Rate of change of volume dV/dt = dV/dr * dr/dt

dV/dr = 3(4/3πr²)

dV/dr = 4πr²

dV/dr = 4π(2)²

dV/dr = 16π

If V = 72cm²/s

72 = 16π*dr/dt

dr/dt = 72/16π

dr/dt = 9/2π cm/s

Hence the radius is changing at  9/2π cm/s

6 0
3 years ago
PLEASE HELP!!!!! possible widths for a rectangular garden are 5 feet, 6 feet, and 7 feet. Leon wants the area of the garden to b
Nataliya [291]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
How many times can 8 go in to 1220
weeeeeb [17]
1220/8= 152.5
So 8 can go into 1220 152.5 times
5 0
3 years ago
Simplify the expression 7C4
Nady [450]
To simplify 7C4 we use the combination formula given by:
nCr=n!/[(n-r)!r!]
thus:
In our case we shall have:
n=7 and r=4
7C4
=7!/[(7-4)!4!]
=5040/[6×24]
=5040/144
=35

The answer is 35

6 0
3 years ago
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