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Orlov [11]
3 years ago
14

Can someone help plz

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0
$3.40

You can get this by using 1.028 (the rate of inflation) and raising it to the 7th power (amount of years). Then multiply the result by 2.80. 
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A gasoline tank for a certain car is designed to hold 14.0 gal of gas. Suppose that the variable x = actual capacity of a random
MariettaO [177]

Answer:

A gasoline tank for a certain car is designed to hold 14.0 gal of gas.

\mu = 14

\sigma = 0.2

a)What is the probability that a randomly selected tank will hold at most 13.7 gal?

We are supposed to find P(x \leq 13.7)

z=\frac{x-\mu}{\sigma}

z=\frac{13.7-14}{0.2}

z=-1.5

Refer the z table for p value

p value = 0.0668

So, P(x \leq 13.7)= 0.0668

The probability that a randomly selected tank will hold at most 13.7 gal is  0.0668

b)What is the probability that a randomly selected tank will hold between 13.4 and 14.3 gal?

We are supposed to find P(13.4

z=\frac{x-\mu}{\sigma}

z=\frac{13.4-14}{0.2}

z=-3

P(x<13.4)=P(z<-3)= 0.0013

z=\frac{x-\mu}{\sigma}

z=\frac{14.3-14}{0.2}

z=1.5

P(x<14.3)= 0.9332

P(13.4

The probability that a randomly selected tank will hold between 13.4 and 14.3 gal is 0.9319

(c) If two such tanks are independently selected, what is the probability that both hold at most 14 gal?

We are supposed to find P(x \leq 14)

z=\frac{x-\mu}{\sigma}

z=\frac{14-14}{0.2}

z=0

Refer the z table for p value

p value = 0.5

So, P(x \leq 14)= 0.5

Two such tanks are independently selected, the probability that both hold at most 14 gal = 0.5 * 0.5 = 0.25

Hence If two such tanks are independently selected, the probability that both hold at most 14 gal is 0.25

3 0
3 years ago
I WILL GIVE BRAINLIEST
Illusion [34]

Answer:

D. -20 + 35c

Step-by-step explanation:

<em><u>All you need to do is distribute the -5 to what's inside the parenthesis:</u></em>

-5(4 - 7c)

<em><u>The -5 can be distributed to the 4 and the -7c:</u></em>

-20 + 35c

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3 years ago
Solve for x: 3 + 5x = 4x - 6
solniwko [45]

Answer:

3 + 5x = 4x - 6

Let's do it quickly and simply,

Let's gather the like terms

5x - 4x = -6 - 3

x = - 9

Hope it helps!

4 0
3 years ago
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Answer:

c

Step-by-step explanation:

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20 earth pounds on the moon would equate to 3.31 pounds.
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