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artcher [175]
3 years ago
13

Sarah correctly answers 21 questions on her reading test. There are 30 questions on the test.

Mathematics
1 answer:
Mashcka [7]3 years ago
6 0

Answer:

I think it is 70% :)

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Which graph represents the equation 12 = 32 + 4y? Explain how you know.
sergeinik [125]
What graph?
BTW the answer to that equation is: x=5
12=32+4y
12-12= 0 (cancels out)
32-12= 20
20 divided by 4= 5
Therefore, x=5
6 0
3 years ago
What is x for Unknown angle problems with algebra?
yulyashka [42]

The value of x=20

Step-by-step explanation:

We need to find the value of x

We are given a right angle which is equal to 90°

So, all three angles must sum to 90°

Our equation will be:

x+2x+(x+10)=90

Solving and finding value of x

x+2x+x+10=90\\4x=90-10\\4x=80\\x=80/4\\x=20

So, the value of x=20

Keywords: Angles

Learn more about angles at:

  • brainly.com/question/3202836
  • brainly.com/question/7151553

#learnwithBrainly

5 0
3 years ago
How do i solve this?
vodka [1.7K]

Step-by-step explanation:

all I see is a piece of paper

5 0
3 years ago
Find the opposite of -3
WITCHER [35]
The opposite would be 3

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4
Just switch out the negatives for positives
8 0
2 years ago
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I need help with this plzzz percent equations blank % of $900,000 = $270,000
notsponge [240]

Answer:

30%

Step-by-step explanation:

7 0
3 years ago
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