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3 years ago

Help please! Don’t understand!

Mathematics

2 answers:

cricket20 [7]3 years ago

7 0

$6+2-(-1)+(-8)=8+1-8=1$

julia-pushkina [17]3 years ago

4 0

Hi there! The answer is 1.

$6 + 2 - ( - 1) + ( - 8) =$
Keep in mind that the sum of a plus and a minus ends up in a minus. So
+ - = -

Keep in mind that the sum of a minus and a minus ends up in a plus.
- - = +

$6 + 2 + 1 - 8 =$
Now add from left to right.

$8 + 1 - 8 =$
Add once more

$9 - 8 =$
Subtract

$1$
Hence, the answer is 1.
~ Hope this helps you!

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What single decimal multiplier would you use to increase by 18% followed by a<br> 12% decrease?

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Answer:

The single decimal multiplier used to increase by 18% followed by a 12% decrease is 0.21.

Step-by-step explanation:

Let 'x' be the number

As first the number has to be increased by 18%

Step 1: write the percentage '18%' in decimal form

18% = 0.18

Step 2: For percentage increases: add the decimal to 1

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Step 3: Multiply the number x by the multiplier, found in Step 2

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<u><em>NEXT WE HAVE TO DECREASE 1.18x by 12%</em></u>

Apply the same method but with a number 1.18x

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For percentage decreases: subtract the decimal to 1

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Multiply the number 1.18x by the multiplier, found in Previous step

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Therefore, the single decimal multiplier used to increase by 18% followed by a 12% decrease is 0.21.

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Read 2 more answers

Mixed Applications

Orlov [11]

The solution to the given question will be:-

A) If a number, n, divided by 8 equals 2.5, what is n: n = 20

B) The sum of a number, n, and 6.05 is 12.4. What is n: n = 6.35

C) Stacy is one-fourth as old as her mother. If Stacy's mother is

36, how old is Stacy: 9 years

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division

A) If a number, n, divided by 8 equals 2.5, what is n?

n / 8 = 2.5

n = 8 x 2.5 = 20

B) The sum of a number, n, and 6.05 is 12.4. What is n?

n + 6.05 = 12.4

n = 12.4 - 6.05 = 6.35

C) Stacy is one-fourth as old as her mother. If Stacy's mother is

36, how old is Stacy?

(1 / 4) M $_{age}$ = S $_{age}$

S $_{age}$ = ( 36 / 4)

S $_{age}$ = 9 years

Therfore the answers are n = 20 ,n = 6.35, S $_{age}$ = 9 years

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