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Delvig [45]
3 years ago
5

On the first math exam, 16 students received an A grade. On the second math exam, 12 students received an A grade. What percenta

ge decrease is that?
Mathematics
2 answers:
inn [45]3 years ago
8 0

Answer:

25%

Step-by-step explanation:

So, first, you need to subtract 16 by 12, 16-12, which should be 4. after that step, you need to divide 4 by the actual number of students. that should be 16 students. so now, you should get .25, but then to get the percentage, you need to move the decimal point two spaces to the right, or multiply it by 100. then you get 25%.

PSST!! put this in your notes for math, if you want for tests!

Tems11 [23]3 years ago
5 0

The percentage decrease is I think is 4 didn't get A's. I don't know if it's right.

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2 years ago
What is the area of the triangle?<br> 6<br> 2<br> 3
Llana [10]

Answer:

6

Step-by-step explanation:

Find the area of both triangles inside the bigger triangle and add them together.

Use the Pythagorean theorem to find the missing length of the leg in the smallest triangle:

a² + b² = c²

2² + b² = 3²

4 + b² = 9

5 = b²

2.2 ≈ b

Calculate the area of the smaller triangle:

1/2(bxh)

1/2(2 x 2.2)

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<em>We know that the longer leg is 3.8 units because we were able to subtract the length of the smaller triangle's leg from 6. </em>

1/2(bxh)

1/2(2 x 3.8)

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Add both areas to find the area of the largest triangle:

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7 0
3 years ago
Assume each person makes one cola purchase per week in Turlock. Suppose 60% of all people now drink Coke, and 40% drink Pepsi. H
MrMuchimi

Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
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fomenos

Answer:

<h2>the answer is</h2><h2>166 cm²</h2>

Step-by-step explanation:

we know that

surface area of the prism=2*area of the base+perimeter of the base*height

step 1

find the area of the base

area of the base=length* width

length=5 cm

width=4 cm

area of the base=5*4-----> 20 cm²

step 2

find the perimeter of the base

perimeter=2*[length+width]-----> 2*[5+4]----> 18 cm

step 3

height=7 cm

step 4

find the surface area

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surface area of the prism=2*20+18*7----> 166 cm²

7 0
1 year ago
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