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KATRIN_1 [288]
2 years ago
12

400 people were surveyed about their eye color. 8% of the people surveyed have green eyes. how many people had green eyes​

Mathematics
1 answer:
VashaNatasha [74]2 years ago
3 0

Answer:

32

Step-by-step explanation:

The problem above can be solved by using the <em>multiplication operation</em>.

Given: 400 people

           8% of the people with green eyes

Let's solve:

Let x be<em><u> the number of people with green eyes.</u></em>

x = 400 x 8%

x = 400 x (0.08)

x = 32

So, the number of people surveyed with green eyes is 32. The rest of the surveyed people (368) have a different eye color.

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What is 0.7, 0.755, 5/8 from least to greatest?
Margarita [4]
I like to start by turning all my numbers into the same form.  You can go either way but I am going to turn the decimals into fractions.  so 0.7 is the same as 7/10.

0.755 is like 755/1000 which can be reduced to 151/200  (if you don't understand the convertions let me know i will explaine more.)

Next give all the fractions a common denominator. both 8 and 10 go into 200 so we can use that.  151/200 already has a denominator of 200 so that one is set.
for 7/10  well, 10 time 20 is 200 so multiply both the numerator and the denominator by 20 so you get 140/200
the last one is 5/8  8 times 25 is 200 so multiply both numbers by 25 to get 125/200  

the fractionos we have are 125/200  151/200 and 140/200.  Now because they all have the same denominator the one with the lowest numerator is the least number and the one with the highest number is the greatest number.

125/200  140/200  151/200  now just replace the original number with the order they are placed in.
125/200 was 5/8
140/200 was 0.7 
151/200 was 0.755
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6 0
3 years ago
Given that F( x ) = x 2 + 2, evaluate F(1) + F(5).
stealth61 [152]

Hi there! :)

Answer:

\huge\boxed{f(1) + f(5) = 30}

Given:

f(x) = x^{2} + 2

Evaluate f(1) + f(5)

Solve for each:

f(1) = (1)^{2} +  2 = 3

f(5) = (5)^{2} + 2 = 27

27 + 3 = 30

3 0
3 years ago
Read 2 more answers
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