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telo118 [61]
3 years ago
7

Marco got 15 questions wrong on his 30-question test. What is his grade as a percent?

Mathematics
2 answers:
Serhud [2]3 years ago
8 0

Answer:

15

Step-by-step explanation:

Mnenie [13.5K]3 years ago
7 0

Answer:

50%

Step-by-step explanation:

Well 15 out of 30 is basically half when in a fraction

15/30 = 1/2

1/2 is basically 0.5

0.5 is 50 percent.

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Solve the expression R/2 greater than or equal to 2.5 ty .
Step2247 [10]

Answer:

R ≥ 5

Step-by-step explanation:

\frac{R}{2} ≥ 2.5              To solve, multiply both sides by 2

2 x \frac{R}{2} ≥ 2.5 x 2

R ≥ 5

If this answer is correct, please make me Brainliest.

4 0
4 years ago
A group of 150 middle school students were asked whether they prefer playing video games or watching TV in their spare time.
nalin [4]
A= 44%
B= 42% 


You add 26 and 40 to get 66 and divide by 150. you get .44. Multiply this by 100 and get 44% for A.

You add 40 and 23 to get 63 and divide by 150 again. you get .42. Multiply this by 100 and get 42% for B.





7 0
3 years ago
The area of a rectangular classroom is given by the trinomial 10x^2 + 3x - 4 What are the possible dimensions of the classroom?
juin [17]
Answer: The expression factors to (2x - 1)(5x + 4)

In a rectangle the area is L x W. So if we know the area is 10x^2 + 3x - 4, then all we have to do is factor it to find possible values for the L and W.

If you factor the expression by grouping, you will get (2x - 1) and (5x + 4).

Your questions asks for possible dimensions, you could give the two expressions as dimensions.

If you wanted to select a value for x, you could plug it in and get values that could be dimensions.

For example if you let x = 10, you would have a rectangle that has a width of 19 and a length of 54.
7 0
3 years ago
It takes Destiny y 4 hours to file all the daily paperwork. It takes Susan 5 hours to file the same paperwork. If they work toge
Marina86 [1]

Answer: it will take them 2.22 hours working together.

Step-by-step explanation:

It takes Destiny y 4 hours to file all the daily paperwork. This means that unit rate of Destiny would be

1/4 per hour.

It takes Susan 5 hours to file the same paperwork. This means that unit rate of Susan would be

1/5 per hour.

If they work together, they would work at their own individual rates. This means that their individual rates are additive.

Let t represent the time it will take them if they worked together. Since their combined rate is additive Therefore,

1/4 + 1/5 = 1/t

9/20 = 1/t

t = 20/9 = 2.22 hours

8 0
3 years ago
Find the surface area of a cube is 150 cm2. What is the length an edge of
Alex Ar [27]

Answer:

5

Step-by-step explanation:

The formula is 6x^2

If you set it equal to 150

6 0
3 years ago
Read 2 more answers
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