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koban [17]
3 years ago
9

8. Explain why 30+1 = 6 is the same as 30 -/-/--/-X-X = 0. What is

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
4 0

Answer:

5

Step-by-step explanation:

5 because of two ways one you could do 6*what is 30. Or you could do repeated addition 30=5+5+5+5+5+5. But when you do 30=5-5-5-5-5-5. You are doing repeated subtraction which is equivalent to 30-5*6= 0.

Hope this helps more than the link! :)

anyanavicka [17]3 years ago
3 0
The answer if 5 because because you can first divide 30 by 6 then get 5, and you can check that answer by subtracting 6 from 30, 5 times -hope this helps
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Suppose that a person with a push mower can mow a large lawn in 5 ​hours, whereas the lawn can be mowed with a riding lawn mower
Reil [10]
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Push Mower
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It takes 5 hours to complete the job
1 hour = 1/5 of the job

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Riding Lawn Mower
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It takes 3 hours to complete the job
1 hour = 1/3 of the job

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Push Mower + Riding Lawn Mower
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1 hour = 1/5 + 1/3 
1 hour = 3/15 + 5/15 
1 hour = 8/15 of the job.

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Calculate time needed to complete
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8/15 of the job takes 1 hour
8/15 of the job = 1 hour 

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Divide by 8/15 on both side
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8/15 ÷ 8/15 of the job = 1 ÷ 8/15 hour
Whole of the job = 1 x 15/8 hours
Whole of the job = 15/8 hours
Whole of the job = 1 7/8 hours

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Answer: 1 7/8 hours
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6 0
3 years ago
What is the product of (x 1)^2?
Viktor [21]
The product of (x1)^2 is 20
6 0
4 years ago
Hal read 114 pages of his book during vacation. This was 60% of the book. How many pages does Hal have left to read?
Nadusha1986 [10]

Answer:

Step-by-step explanation:

so... 60% of his entire book is 114 pages...

let x represent his entire book

turn ur percent to a decimal

" of " means multiply and " is means equals

0.60x = 114...divide both sides by 0.60

x = 114/ 0.60

x = 190 pages left <===

5 0
4 years ago
The value of expression b is eight times the value of expression a. determine what number belongs in the box of expression. expl
klemol [59]
I think it would be 32. This is because you have to make the expression 8 times greater, and 4 times 8 is 32.
5 0
3 years ago
Simplify the expression:<br>x²+x/x​
polet [3.4K]

Answer:

x² + 1

or if we suppose

x² + 1 = 0 the n we get value of x

x = ±1

Step-by-step explanation:

x²+x/x​    (cancel out both x/x we get)

x² + 1

Let suppose

x²+x/x​ = 0

x² + 1 =0

x²=-1

taking square root on both side we get

x = ±1

:)

8 0
4 years ago
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