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3 years ago

9

Which expression can be used to find 15% of 20?

1 answer:

dezoksy [38]3 years ago

5 0

Answer:

Expression: 0.15 * 20

Equation: 0.15 * 20 = 3

Step-by-step explanation:

This expression was found by dividing 15% by 100 to convert it into a decimal (0.15) that can be used to multiply with 20 to get your answer.

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Solve the following equation simultaneously 2a-3b+10=0, 10a+6b=8

tia_tia [17]

$2a -3b +10 =0\\\\10a+ 6b -8 =0\\\\\text{Using cross multiplication method}\\\\\\ \dfrac a{(-3)(-8) - 6(10)} = \dfrac b{10(10) - 2(-8)} = \dfrac 1{ 2(6) - (-3)(10)}\\\\\\\implies \dfrac a{24-60} = \dfrac b{100+16} = \dfrac 1{12+30}\\\\\\\\\implies -\dfrac {a}{36} = \dfrac b{116} = \dfrac 1{42}\\\\\\\text{Hence}\\\\a = - \dfrac{36}{42} = -\dfrac 67 \\\\\\ b= \dfrac{116}{42} = \dfrac{58}{21}$

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2 years ago

Simplify the expression:<br> -2(-1 + 2w) =<br> Submit please

Margaret [11]

$-2(-1+2w)$

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put in standard form

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2 years ago

Help me out please<br> and i need a step by step explanation

AVprozaik [17]

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Step-by-step explanation:

By counting how many chips there are, you can get the following:

1 positive chip + 1 negative chip + 4 negative chips, which is

+1 + -1 + 4 x -1

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3 years ago

Please Hurry). Question: What is the value of x? (Will Mark Brainliest) Please only answer if you know it.

aleksklad [387]

Answer:

111

Step-by-step explanation:

The sum for a 7-sided interior polygon is 900

126+158+120+125+121+139=789

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2 years ago

Read 2 more answers

What is the benchmark of 6/10

IceJOKER [234]

First split your model into 10 equal sections then you shade/color in 6 of them.
There it goes that is 6/10 bench mark!
~JZ
Hope it helps

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3 years ago