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Sindrei [870]
3 years ago
6

If 40% of a number is 56. What was the original number

Mathematics
1 answer:
Phantasy [73]3 years ago
4 0
40\% \ of x = 56 \\ \\  \frac{40}{100}*x=56 \\ \\ x=56: \frac{40}{100} \\ \\ x=56* \frac{100}{40}= \frac{5600}{40}= 140 . \\ \\ \\\\\huge\text{The answer is x=140 !}
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Catherine and Lance open a savings account at the same time. Catherine deposits $100 initially and adds $20 per week. Lance depo
docker41 [41]

Answer:

After 40 weeks

Step-by-step explanation:

To get the answer to this question, we need to first know the difference in the amount of money deposited by the 2 individuals and in this case it us $400 since one deposited $500 and the other $100

The next thing to do is to divide the difference in amount(400) by the amount contributed by each person per week.

Catherine deposits $20 per week

400/20 = 20

Lance deposits $10 per week

400/10 = 40

The LCM between 40 and 20 is 40 weeks.

Therefore, both individuals need to deposit money for 40 weeks for both of their savings to be the same.

If Catherine deposits $20 for 40 weeks,she will have 40 × 20 = $800 + $100(initial deposit that she made) = $900

Lance deposits $10 for for 40 weeks and he will have 40 × 10 = $400 + $500(initial deposit made by him)= $900

4 0
3 years ago
Read 2 more answers
What is the slope of the line 3x-7y=11
Tom [10]
Slope intercept form is y=mx+b where m=slope and b=yintercept so

3x-7y=11
add 7y to both sideds
3x=11+7y
subtract 11 from both sides
3x-11=7y
divide both sides by 7
3/7x-11/7=y
y=3/7x-11/7

slope is 3/7
8 0
3 years ago
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The product of a number m and 6 is no less than 30.
Ronch [10]

Answer:

x= anything less than 5

Step-by-step explanation:

We know that 5*6 is 30, so x would have to be anything less than five.

5 0
3 years ago
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Can somebody please help me out... I really don’t get it and no one seems to help...
babunello [35]

I got you, just follow my work

-2x+3=-5x+9

-2x=-5x+6

3x=6

x=2

Plug x back in

-2(2)+3= -1

y=-1

FINAL ANSWER: (2,-1)

6 0
3 years ago
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WILL GIVE BRAINLIEST!!
Stels [109]

Hello,

m(x) = 5x + 4\\n(x) = 6 x-9\\Part\ A:\\(m + n)(x)=m(x)+n(x)=5x+4+6x-9=11x-5\\Part\ B:\\ (m-n)(x)=m(x)-n(x)=5x+4-(6x-9)=5x-6x+4+9=-x+13\\Part\ C: \\(m\ o\ n)(x)=m[n(x)]=m(6x-9)=5*(6x-9)+4=30x-45\\

4 0
3 years ago
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