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Ipatiy [6.2K]
3 years ago
8

There are 60 girls and 90 boys in the sixth grade at a middle school. What percent of the sixth graders at this middle school ar

e boys?
Mathematics
1 answer:
KonstantinChe [14]3 years ago
3 0

Answer:

60%

Step-by-step explanation:

First, find the total number of sixth graders

To do this, add the number of girls and boys together

girls+boys

There are 60 girls and 90 boys

60+90

150

Now, find the percent of sixth graders that are boys

To do this, divide the number of boys by the total number of sixth graders

boys/total sixth graders (part/whole)

There are 90 boys, and 150 total sixth graders

90/150

0.6

Convert to a percent. Multiply by 100 or move the decimal place two spots to the right

0.6*100=60

0.6-->6.0-->60.

So, 60% are boys

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Determine an expression that would represent the area of the figure shown.
Alborosie

Answer:

Option A : 15x² + 62x + 63 is the correct answer.

Step-by-step explanation:

Given measurements of the figure are:

5x + 9 and 3x + 7

We have to find the area. We can find the area by multiplying the two expressions.

Area = (5x+9) * (3x+7)

Area = 5x (3x+7) +9(3x+7)

Area = 15x² + 35x + 27x + 63

Area = 15x² + 62x + 63

Hence,

Option A : 15x² + 62x + 63 is the correct answer.

8 0
3 years ago
Divide 380 among A, B and C in such a way that B gets 30 more than A and C gets 20 more than B. ​
Readme [11.4K]

Answer:

A = 100 B = 130 C = 150

Step-by-step explanation:

Translated into a system of equations:

A+B+C = 380

B = A+30

C = B + 20

So we find B from the last one:

B = C-20

Plug it in the second one:

C-20 = A+30

A = C-50

Plug it in the first:

C-50 + C-20 + C = 380

3C - 70 = 380

3C = 450

C=150

A = C - 50 = 150 - 50 = 100

B = C - 20 = 150 - 20 = 130

6 0
2 years ago
Read 2 more answers
The original price is $40.90 and the sale price is 30% off what would be two different expressions for the equation?
Ann [662]

Answer:

(40.90 ÷ 100) × 30

And

0.3 × 40.90

8 0
3 years ago
What percent of 4c in each expression? <br> 0.2c
Ymorist [56]

The percentage of 4c in the expression 0.2c is 2000%

<h3>How to determine the percentage of 4c?</h3>

The expression is given as:

0.2c

The percentage of 4c is then calculated as:

4c/0.2c

Evaluate the quotient

20

Express as percentage

2000%

Hence, the percentage of 4c in 0.2c is 2000%

Read more about percentages at:

brainly.com/question/843074

#SPJ1

7 0
2 years ago
The english alphabet contains 21 consonants and five vowels. how many strings of six letters, each of which is drawn from the en
Mamont248 [21]
Number of strings = 21^5(5) = 21 x 21 x 21 x 21 x 21 x 5 = 20 420 505

Answer:  20 420 505
6 0
3 years ago
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