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Nimfa-mama [501]
3 years ago
15

You earn a 90% on his science test you answer 18 questions correctly how many questions were on the test

Mathematics
2 answers:
Bogdan [553]3 years ago
8 0
Hello there!

The correct answer is 20.

Hope This Helps You!
Good Luck :)
gogolik [260]3 years ago
5 0
We can write a ratio equation 90/100 =18/x to show how many problems he got right on his science test.  

We can cross multiply to simplify our equation to 90x=1800.

Now we divide by 90 on both sides to get x=20.

There were 20 questions on the science test, if you answered 18 questions correct, your test score would be a 90%.
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Which is more, 8 pints or 13 cups?
RoseWind [281]

Answer:

8 pints

Step-by-step explanation:

A pint is 16 ounces = 2 cups

8 pints is then 16 cups

8 0
2 years ago
Read 2 more answers
Nick is making cookies The recipe requires 2 1/3
timofeeve [1]
ANSWER: 4/21 teaspoons of salt


2 1/3 flour : 1/3 salt

2 1/3 cups of flour = 7/3
To get 2 cup of flour we need 3/3 so we take away 4/3 of the flour

7/3 ÷ 4/3 = 1.75
so we ÷ both by 1.75 to get the same ratio

1/3 teaspoons ÷ 1.75 = 4/21 teaspoons of salt
3 0
3 years ago
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Describe the transformation of the graph y = (x + 3)2 – 4 from the parent function y = x².
Mazyrski [523]
The answer is A.  Left 3 and Down 4

6 0
3 years ago
Take a look at the pic
Nady [450]

Answer:   All of them are division signs. except for 1, (x - 12) <division sign> plus z

5 0
3 years ago
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Solve the inequality 2x - 3 &lt; x + 2 ≤ 3x + 5. Show your work.
grandymaker [24]

Answer:

-3/2 ≤ x < 5

Step-by-step explanation:

Begin the solution of this inequality 2x - 3 < x + 2 ≤ 3x + 5 by combining the constants:  Subtracting 2 from 2x - 3, x + 2 and 3x + 5 yields:

2x - 5 < x ≤ 3x + 3.

Focus on the first part of this inequality, 2x - 5 < x simplifies to x - 5 < 0 if we subtract x from both sides.  Then x < 5 is part of the solution.

Focus now on the second part of this inequality:  x ≤ 3x + 3.  Subtracting x from both sides yields 0 ≤ 2x + 3, or  -3 ≤ 2x, or 2x ≥ -3, or  x ≥ -3/2.

Re-combining these two separate inequalities results in:

              -3/2 ≤ x < 5 (equivalent to -1.5 ≤ x < 5).

Example:  suppose we choose a test number from this interval.  Does this test number satisfy the original equation?  Choose x = 1.

Is 2(1) - 3 < 1 + 2 ≤ 3(1) + 5 true?

Is   2 - 3 < 3 ≤ 8 true?  YES.  So x = 1 is part of the solution set -3/2 ≤ x < 5.

5 0
3 years ago
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