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Elis [28]
3 years ago
11

HELP PLS its advanced pre algebra grade 7

Mathematics
1 answer:
-BARSIC- [3]3 years ago
3 0

Answer:

x=4

Step-by-step explanation:

3/4(x+8)=9

simplify

3/4x+6=9

-6 -6

3/4x=3

multiply 4

3x=12

divide 3

x=4

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3 years ago
A woman spent two thirds of her money she lost two thirds the remainder and then had $4 left how much money did she start with
Lisa [10]

Answer

Find out  how much money did she start with.

To proof

let us assume that the money she had be x.

As given

woman spent two thirds of her money

Money\ spent = \frac{2x}{3}

Money she had after spent two thirds of her money  = Total money - money spent

= x - \frac{2x}{3}

= \frac{1x}{3}

As given she lost two thirds the remainder

=\frac{2}{3}\times ( money\ she\ had\ after\ spending\ two\ thirds\ of\ her\ money)

= \frac{2}{3} \times\frac{1x}{3}

we get

=\frac{2x}{9}

Money she had after lost two thirds the remainder = Money she had after spent two thirds of her money - she lost two thirds the remainder

= \frac{1x}{3} - \frac{2x}{9}

= \frac{1x}{9}

As given

she had $4 left

thus

\frac{1x}{9} = 4

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3 0
4 years ago
Read 2 more answers
Divide 3.5 × 108 by 6.6 × 104 and write the answer in scientific notation.
vagabundo [1.1K]
(3.5×10^(8))÷(6.6×10^(4))
=5,303.0303030303

answer : b
4 0
3 years ago
Three postal workers can sort a stack of mail in 20 ​minutes, 30 ​minutes, and 60 ​minutes, respectively. Find how long it takes
Step2247 [10]

Answer: 10 minutes

Step-by-step explanation:

Given : Three postal workers can sort a stack of mail in 20 ​minutes, 30 ​minutes, and 60 ​minutes, respectively.

Let T be the time taken by all of them when they working together.

Then , we have the following equation :-

\dfrac{1}{T}=\dfrac{1}{20}+\dfrac{1}{30}+\dfrac{1}{60}\\\\\Rightarrow\dfrac{1}{T}=\dfrac{3+2+1}{60}\\\\\Rightarrow\dfrac{1}{T}=\dfrac{6}{60}=\dfrac{1}{10}\\\\\Rightarrow T=10

Hence, the time taken by all of them when they working together = 10 minutes.

4 0
3 years ago
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