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Arte-miy333 [17]

3 years ago

5

In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students in

the class wear glasses?

1 answer:

attashe74 [19]3 years ago

7 0

Answer:

8

Step-by-step explanation:

40% of 20 is 8 25% of 8 is 2 50% of 12 is 6 so you will add 6+2=8

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Chen rode his skateboard 3 3 4 miles in 3 4 of an hour. What was his average speed in miles per hour?

Sati [7]

The answer is 5 .

3 3/4 / 3/4 = 5
Hope this helps

7 0

3 years ago

Find the mean of the set of data. Use a calculator if necessary.

dangina [55]

Answer:

7

Step-by-step explanation:

mean is average of the numbers

add all values then divide by the numbers

(1+5+8+10+11) / 5

35 / 5 = 7

5 0

3 years ago

Read 2 more answers

Carter is selling his bike. His research shows that the bike has a current value of $90, which is 45% of the amount Carter paid

GaryK [48]

Carter paid $200 for the bike.

Step-by-step explanation:

Given,

Current value of bike = $90

This represent 45% of the original amount Carter paid for bike.

Let,

x represent the original amount of bike.

45% of x = 90

$\frac{45}{100}x=90\\\\0.45x=90$

Dividing both sides by 0.45

$\frac{0.45x}{0.45}=\frac{90}{0.45}\\x=200$

Carter paid $200 for the bike.

Keywords: percentage, division

Learn more about division at:

#LearnwithBrainly

6 0

3 years ago

Write a word phrase for each algebraic expression 5(x-2)

givi [52]

Five times the sum of x and negative two, or five times the difference of x and two

6 0

3 years ago

5/6+2i<br><br><br>Aka<br><br><br> 5<br><br>___<br><br>6+2y<br>Ignore my answer its probably wrong

liberstina [14]

Answer:

(3/4) -(1/4)i

Step-by-step explanation:

Your answer is correct.

$\dfrac{5}{6+2i}=\dfrac{5(3-i)}{2(3+i)(3-i)}=\dfrac{5(3-i)}{2(9+1)}\\\\=\dfrac{3-i}{4}=\dfrac{3}{4}-\dfrac{1}{4}i$

8 0

3 years ago