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3 years ago

A car gets 22 miles per gallon of fuel. At this rate, how many gallons of fuel does the car need to travel 121 miles?

Mathematics

2 answers:

Elodia [21]3 years ago

8 0

Answer:

i think it is 2662 gallons, i think

Step-by-step explanation:

butalik [34]3 years ago

8 0

Answer:

5.5 gallons.

Step-by-step explanation:

first find out how many time 22 goes into 121, then find out how much the remainder is then calculate both answers into one answer: 5.5

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5) The Ministry of Human Resources wanted to know whether the mean salary of

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3 0

3 years ago

Allen is buying a video game that originally costs $49. He has a 10%-off

Annette [7]

The total amount Allen will need to pay for the video game is $48.96 as 49-0.1+0.06=48.96

7 0

4 years ago

Find the solution set of this inequality|10x+20| ≤10

Pavlova-9 [17]

Answer:

solution is

[-3,-1]

Step-by-step explanation:

we are given

$|10x+20|\leq 10$

Firstly, we will find critical values

so, let's assume it is equal

$|10x+20|= 10$

now, we can break absolute sign

For $|10x+20|= -(10x+20)$ :

$-(10x+20)= 10$

we can solve for x

$-10x-20= 10$

Add both sides by 20

$-10x-20+20= 10+20$

$-10x= 30$

Divide both sides by -10

and we get

$x=-3$

For $|10x+20|= (10x+20)$ :

$(10x+20)= 10$

we can solve for x

$10x+20= 10$

Subtract both sides by 20

$10x+20-20= 10-20$

$10x= -10$

Divide both sides by 10

and we get

$x=-1$

so, critical values are

$x=-3$

$x=-1$

now, we can draw a number line and locate these values

and then we can check inequality on each intervals

For $(-\infty,-3)$ :

We can select any random value from this interval and plug that in inequality

and we get

we can plug x=-5

$|10\times -5+20|\leq 10$

$|-50+20|\leq 10$

$30\leq 10$

so, this is FALSE

For $[-3,-1]$ :

We can select any random value from this interval and plug that in inequality

and we get

we can plug x=-2

$|10\times -2+20|\leq 10$

$|-20+20|\leq 10$

$0\leq 10$

so, this is TRUE

For $(-1,\infty)$ :

We can select any random value from this interval and plug that in inequality

and we get

we can plug x=0

$|10\times 0+20|\leq 10$

$|0+20|\leq 10$

$20\leq 10$

so, this is FALSE

so, solution is

[-3,-1]

7 0

3 years ago

Simplify (3y^6)^5/(y^3)^5

Alex17521 [72]

Answer: 245y^15

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Two different ways to find the difference for 12-3

Gennadij [26K]

For this case we have:

way 1:
Common factor 3 in the expression:
$12-3 = 3 (4-1)

12-3 = 3 (3)

12-3 = 3 (9)$

Way 2:
Write the number 12 as the sum of 4 times 3:
$12-3 = (3 + 3 + 3 + 3) - 3
$
Then, for associative property:
$12-3 = 3 + 3 + 3 + (3 - 3)

12-3 = 3 + 3 + 3 + (0)

12-3 = 3 + 3 + 3

12-3 = 9$

8 0

3 years ago

Read 2 more answers