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irina1246 [14]
2 years ago
12

Matt made a 75% on his test. There were 20 questions on the test. How many

Mathematics
2 answers:
MArishka [77]2 years ago
5 0

Answer:

15

Step-by-step explanation:

1/20=5%

2/20=10%

...

if the questions he got right equals x, and each question he got right equals 5%, than x/20=75% because he got 75% right.

now to solve it.

x/20=75%

percent means divided by 100 so

x/20=75/100

x/20*20=(75/100)*20

x=0.75*20

x=15

he got 15 questions correct

GaryK [48]2 years ago
3 0

Answer:

55

Step-by-step explanation:

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What are the two words that allow you to check your division problem backward?
Dahasolnce [82]

Answer:

inverse operation

Step-by-step explanation:

Inverse means opposite. The opposite of division is multiplication. For example, if you divided 15 by 3, the answer is 5. If you multiply 5 by 3, the answer is 15. You know your answer is correct by checking it with the inverse operation.

Hope this helps!! Have a wonderful day :3

3 0
3 years ago
PLS HELP ASAP!! WILL MARK BRAINLYIST
son4ous [18]

Answer:

$39,851.25

Step-by-step explanation:

If the sales increase at a rate of 9% per year, this means it will be 109% of the previous year's value since 100% + 9% = 109%

109% in decimal form = 109/100 = 1.09

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7 0
2 years ago
the height of a cylinder is three times the diameter of the base . The surface area of thre ylinder is 126pi ft^2. What is thr r
Over [174]
The answer is 3 ft

The surface area (SA) of a cylinder with radius r and height h is:
SA = 2πr² + 2πrh = π(2r² + 2rh)

We have:
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126π = π(2r² + 2rh)
126 = 2r² + 2rh
126 = 2r² + 2r * 6r
126 = 2r² + 12r²
126 = 14r²
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r = √9
r = 3
8 0
3 years ago
Read 2 more answers
Please help me with this
emmasim [6.3K]
The equation is put in slope intercept form which is y=mx+b

The slope is m and in this case it is -1/2.
To find the y intercept substitute in 0
for x then solve.
y =   - \frac{ 1}{2} (0) + 7
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5 0
3 years ago
Read 2 more answers
Plz help i will mark brainlest
11111nata11111 [884]

Answer:

a,b and dcbecause it equals 1

Step-by-step explanation:

you have to find something that is gonna divide by itself to get a postive number, so d wont work bc it would be 24 divided by 25

8 0
2 years ago
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