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sergiy2304 [10]
3 years ago
9

The percent of working students increased 8.1 to 40.5 what was the present prior to increase

Mathematics
1 answer:
Dmitrij [34]3 years ago
6 0

Answer:

  32.4

Step-by-step explanation:

prior + 8.1 = 40.5 . . . . . . seems to model the problem statement

prior = 32.4 . . . . . . . subtract 8.1 from both sides

Prior to the increase the percent was 32.4.

_____

<em>Comment on the problem statement</em>

When you're talking about a percentage increase in a percentage, it is almost never clear whether you're talking about the percentage of the underlying number, or the percentage of the percentage.

Here, we assume the 8.1 is a percentage of working students, not a percentage of the percentage of workings students. If you actually intend the latter, the percentage before the increase was about 37.465%.

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Help me please! I need an answer!
grigory [225]

Answer:  \bold{\dfrac{b_1}{b_2}=\dfrac{3}{2}}

<u>Step-by-step explanation:</u>

Inversely proportional means a x b = k   --> b = k/a

Given that a₁ = 2   --> b₁ = k/2

Given that a₂ = 3   -->  b₂ = k/3

\dfrac{b_1}{b_2}=\dfrac{\frac{k}{2}}{\frac{k}{3}}=\large\boxed{\dfrac{3}{2}}

5 0
4 years ago
Find the sum. (-7/2z+4)+(1/5z-15)
Dafna11 [192]

Answer:

-(33+110z)/10z

Step-by-step explanation:

(-7/2z +4)+(1/5z -15)

from BODMAS, solving the one in the bracket

First(-7/2z +4)+(1/5z -15)

Find the Lcm

[-7/2z +4] +[1/5z -15]

(7+8z)/2z +(1-75z)/5z

find the Lcm which is 10z

[5(-7+8z) + 2(1-75z)]/10z

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(-35+2+40z-150z)/10z

(-33-110z)/10z

-(33+110z)/10z

7 0
4 years ago
Find the slope of the given points(3,4) and (7,-4)( All the fractions will be written as 1/2,1/4 etc.)
ryzh [129]
The slope of these coordinates is -2

3 0
3 years ago
What is 2 1/4 as an improper fraction​
sattari [20]

Answer:

9/4

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7 0
3 years ago
Read 2 more answers
Question 2
Pavel [41]

Answer:

26

Step-by-step explanation:

Given that :

2 out of every 5 people buys vanilla ice cream;

If Total number of ice cream sold in a day = 65 ; how many will be vanilla ;

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Hence, expected number who bought vanilla :

p(vanilla) * total number of icecream sold

0.4 * 65 = 26

Hence, about 26 of the 65 icecream sold are vanilla flavor.

7 0
3 years ago
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