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a_sh-v [17]
3 years ago
12

Twenty seven less than eight times a number is equal to five. What is the number?

Mathematics
2 answers:
Korvikt [17]3 years ago
6 0
<h3><u>The unknown number is equal to 4.</u></h3>

8x - 27 = 5

Add 27 to both sides.

8x = 32

Divide both sides by 8

x = 4

barxatty [35]3 years ago
3 0

8n-27 =5

add 27 to each side

8n = 32

divide by 8

n = 4

Answer n=4

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Ryan earns $5 for each small dog he walks and $8 for each large dog he walks. Today he walked 9 dogs and made a total of $51. Ho
Shalnov [3]
Use a system of equations.

(x=# of small dogs, y=# of big dogs)

x+y=9 (times by -5) -5x-5y=-45
5x+8y=51

Then add the equations together and the x's cancel. 

3y=6
y=2

So he walked 2 big dogs and 7 little dogs.
6 0
3 years ago
James is building a deck for a client and has several pieces of wood he wants to use. The sizes of the pieces of wood are 1.5m,
TiliK225 [7]

Answer:

Total = 9.65m

Step-by-step explanation:

Given

Pieces: 1.5m, 2500mm, 850mm, 4.8m

 

Required

The total length in metres (this completes the question)

The total length is:

Total = 1.5m + 2500mm + 850mm + 4.8m

Convert mm to m

Total = 1.5m + 2500*0.001m + 850*0.001m + 4.8m

Total = 1.5m + 2.5m + 0.85m + 4.8m

Total = 9.65m

<em>The total length of the wood is 9.65 metres</em>

4 0
2 years ago
the price of jet fuel in north america during the last week of 2012 was recorded as $3,062 for 1,000 gallons. What was the unit
Andrews [41]
$3,062 for 1,000 gallons

3062 ÷ 1000 = <span>3.062

Unit rate:- $3.062  per gallon</span>
6 0
3 years ago
TRUE OR FALSE:
Oksanka [162]

Answer:

It doesn't matter in what order we add our ingredients but if we have a combination to our padlock that is 4-5-6 then the order is extremely important. If the order doesn't matter then we have a combination, if the order do matter then we have a permutation. One could say that a permutation is an ordered combination.

Step-by-step explanation:

3 0
2 years ago
what are the answers to these? iv been stuck on the same question all day, it's literally 1 am and I still don't get it.
Mrac [35]

Answer:

A

Step-by-step explanation:

When you add -4.5+4.4, you get -.1

so you need .1 to make the equation =0.

the only option is a. Add -6.7+6.8 to equal .1

4 0
2 years ago
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