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andreev551 [17]
3 years ago
14

Find the reciprocal or multiplication inverse-7

Mathematics
2 answers:
Neporo4naja [7]3 years ago
7 0

Answer:

1/7 of -1/7

Step-by-step explanation:

The multiplicative inverse of a number can be expressed as a fraction. A number multiplied by its multiplicative inverse is one.

when you multiply 1/7 and 7 you get one

same for -7 and 1/-7

the product should equal 1

i hope this helps

have a great day

allochka39001 [22]3 years ago
3 0

I can't really tell if the question is asking about 7 or -7, so I'll give the answer for both.

A multiplicative inverse for 7 is a number you can multiply by 7 to make it equal to 1. In terms of an equation, you would get 7x = 1. We can then solve for x by dividing both sides by 7. So x = 1/7.

For -7, you would be able to solve the same equation as above just with -7 in the place of 7. You would end up with x = -1/7.

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Sally can paint the wall in 54 minutes. If Sally and Ethan work together, they can paint the wall in 36 minutes. How much time d
MAXImum [283]

Answer:

108\ minutes

Step-by-step explanation:

1) we know that

Sally can paint the wall in 54 minutes

so

The 100% of the wall ------> she can paint in 54 minutes

by proportion

calculate how much is the percent of the work in 36 minutes

\frac{100\%}{54} =\frac{x\%}{36}\\ \\x=36*100/54\\ \\x=66.67\%

That means

Sally in 36 minutes can paint the 66.67% of the wall

2) Sally and Ethan work together, they can paint the wall in 36 minutes

so

Ethan in 36 minutes can paint (100%-66.67%)=33.33%

by proportion

Calculate how much time does it take for Ethan to paint the wall by herself

\frac{33.33\%}{36} =\frac{100\%}{x}\\ \\x=36*100/33.33\\ \\x=108\ minutes

6 0
3 years ago
Please help me its 1;23 am and i cant think at all
Misha Larkins [42]
Hope this answer helps you! If it did, please mark it as the brainiest! I would really appreciate it! :)

8 0
3 years ago
Is this question correct?
Andrews [41]

Answer:

10^20

3^11

3^24

10^12

Step-by-step explanation:

(10^2)^10=10^2*10=10^20

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(3^3)^8=3^3*8=3^24

10^2*10^10=10^2+10=10^12

6 0
3 years ago
The cost of a service or item is a(n):<br><br> 1. Expense<br> 2. Income<br> 3. Coupon<br> 4. Budget
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5 0
3 years ago
what is the inverse of h(x)=12e^2x. based on your answer write an expression write an expression equivalent to where x is h of 1
dezoksy [38]
Let y = 12 e^2x

e^2x = y/12
Taking [email protected]
ln e^2x = ln (y/12)

2x = ln (y/12)

x = (1/2) ln (y / 12)

so the inverse h-1(x)  = (1/2) ln ( x / 12)


3 0
3 years ago
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