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Lubov Fominskaja [6]
3 years ago
10

Please help! Grade 7 math

Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0

Answer:

-\frac{5}{8}\\-9.2%\\\\-0.001

-3/4, -5/8, -9.2%, -0.001, 4.6%, 5%, 33%

Step-by-step explanation:

-\frac{3}{4}=-75%                                     4.6%

Let's do the process of elimination to find our answers

-\frac{5}{8}=-62.5% this would be in between because - 62.5% would be after -75%

\frac{5}{100}=5% this fraction equals to a positive percentage which would be after 4 so not this one

-0.001 = -0.1% this number would come after -75%, -62.5%, -9.2%and before 4.6% so this would be one

-0.75= -75% we already have the percentage so not this one

33% this number would come after 4.6% so not this one

-9.2% this would be between them because its -9 and it will be after -75% and -62.5%

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Answer:

x = 2

Step-by-step explanation:

1. distribute 9 in 9(x+1)

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2. subtract x from the right side to isolate x onto one side

8x + 9 = 25

3. subtract 9 from the left side

8x = 16

4. divide both sides by 8 to get x alone

x = 2

8 0
3 years ago
511 = -7 (10x – 13)<br> steps
PilotLPTM [1.2K]

Answer: x=-6

<u>Simplify both sides of the equation</u>

<u></u>511=(-7)(10x)+(-7)(-13)(Distribute)\\511=-70x+91<u></u>

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<u>Flip the equation</u>

<u></u>-70x+91=511<u></u>

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<u>Subtract 91 from both sides</u>

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3 0
3 years ago
Read 2 more answers
Calculate the value of each expression:<br> (-8)•(-2/3)<br> SHOW YOUR WORK:
inna [77]

Answer: \frac{16}{3}

Step-by-step explanation:

For this exercise it is important to remember  the multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-

In this case, given the following expression:

(-8)(-\frac{2}{3})

You can idenfity that both factors are negative. Then, the product (The result of the multiplication) will be positive.

Then, in order to get the product, you need to multiply the numerator of the fraction by -8. So, you get:

 \frac{(-2)(-8)}{3}=\frac{16}{3}

You can notice that the numerator and the denominator of the fraction obtained cannot be divided by the same number; therefore, the fraction cannot be simplified.

3 0
3 years ago
Which inequality represents the situation seven less than a number is no more than 25?
Alexus [3.1K]

Answer:

x-7\leq25

Step-by-step explanation:

6 0
3 years ago
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the combined score for yakubu in geography, economics and science is 194. he scored twice as many marks in economics as in geogr
SVETLANKA909090 [29]

The scores of geography, economics and science are 38, 76, 80 respectively.

Let Yakubu scored x marks in geography.

Given that the score of him in economics is twice of the score of him in geography.

So, his score in economics = 2x

Again it is given that, the score in science is 4 more than the score in economics.

So the score in science = 2x+4

According to question the combined total score is 194. So the suitable equation is,

x+2x+2x+4 = 194

Solving the equation we get,

5x+4 = 194

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x = 190/5

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So the score in geography = 38

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the score in science = 2x+4 = 2*38+4 = 76+4 = 80

Hence the scores of geography, economics and science are 38, 76, 80 respectively.

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brainly.com/question/2972832

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