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nikdorinn [45]
3 years ago
14

Amount of Fuel. A car uses 20 gallons of gasoline for a trip of 500 miles. How many gallons would be used on a trip of 400 miles

? ​
Mathematics
1 answer:
jasenka [17]3 years ago
4 0

Answer:

16 gallons

Step-by-step explanation:

divide

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Solve (2 - x)^2 < 4/25
Semenov [28]

Answer:

8/5 < x< 12/5

Step-by-step explanation:

(2 - x)^2 < 4/25

Take the square root of each side

sqrt((2 - x)^2)  <±sqrt( 4/25)

Make two equations

2-x < 2/5    2-x > -2/5

Subtract 2 from each side

2-x-2 < 2/5 -2          2-x-2  > -2/5-2

-x < 2/5 -  10/5             -x > -2/5  - 10/5

-x < -8/5                         -x > -12/5

Multiply by -1, remembering to flip the inequality

x> 8/5                   x < 12/5

8/5 < x< 12/5

5 0
3 years ago
Read 2 more answers
You are starting a savings account for college. You put $1,000 in as your starting balance. You earn simple interest at 10% ever
Brums [2.3K]

Answer:

— Use NerdWallet to find a better bank account. ... Compound interest is simple: It's the interest you earn on both your original deposit and on the ...

Step-by-step explanation:

7 0
3 years ago
Find two numbers that multiply to make the 1st number and add to make the 2nd number. Multiply -42; Add 1 _____, and _____
dedylja [7]

Answer:

  -6 and 7

Step-by-step explanation:

It is useful to look at the factor pairs of -42.

  -42 = -1(42) = -2(21) = -3(14) = -6(7)

Sums of these factor pairs are 41, 19, 11, 1.

You want the last pair of factors: -6 and 7.

5 0
2 years ago
A student's course grade is based on one midterm that counts as 15% of his final grade, one class project that counts as 15% of
kow [346]

Answer:

Overall final score = 77.75% ; Grade = C.

Step-by-step explanation:

The approach to solve this question is to realize that the marks have to be converted into the respective percentages of the whole course. This means that the marks of all the components have to be normalized according to the grading breakdown.

Project Marks = 97/100. Weightage = 15%. So 97*15/100 = 14.55/15.

This means that the student received 14.55 marks in the project out of 15.

Similarly for other components:

Mid-Term Marks = 83/100. Weightage = 15%. So 83*15/100 = 12.45/15.

Homework Marks = 82/100. Weightage = 35%. So 82*35/100 = 28.7/35.

Finals Marks = 63/100. Weightage = 35%. So 63*35/100 = 22.05/35.

After the conversion process, add up the normalized marks, which are now acting as the percentages earned in all the components.

Aggregate Percentage = 14.55 + 12.45 + 28.7 + 22.05 = 77.75%.

According to the grade scale, the student receives a C because 70 is less than 77.75 and 77.75 is less than 80.

Summarizing, the student receives a C at 77.75%!!!

7 0
4 years ago
Work out the volume of a sphere please help i’ll give u brainlest
Doss [256]

Answer:

V = 3591.4 cm³

Step-by-step explanation:

Volume of Sphere = \frac{4}{3} \pi r^3

Where r = 9.5 cm

V = \frac{4}{3} (3.14)(9.5)^3

V = \frac{4}{3} (3.14)(857.4)

V = \frac{10774}{3}

V = 3591.4 cm³

7 0
3 years ago
Read 2 more answers
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