2 years ago

A test has 20 question if peter gets 80% correct, how many question did peter miss

Mathematics

2 answers:

AlexFokin [52]2 years ago

6 0

Answer:

16 questions right = 80%

So Peter missed 4 questions.

Hope this helps.

:-)

SVETLANKA909090 [29]2 years ago

5 0

Answer:

Step-by-step explanation:

you can divide 100 by 20 and each question is worth 5 points

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One common factor of two numbers is 40. Another common factor is 10. If both numbers are less than 100, what are the two numbers

Viefleur [7K]

Only two numbers less than 100 have a factor of 40: 40 (1 x 40) and 80 (2 x 40). Since 40 is a factor of both 40 and 80, 10 must also be a factor - indeed, 40 = 4 x 10 and 80 = 8 x 10.

The two number must be 40 and 80.

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

What is the set of all solutions to the equation \sqrt{x + 2}= {-x} x+2 =−xsquare root of, x, plus, 2, end square root, equals

NARA [144]

Answer:

$x = 2$ or $x = -1$

Step-by-step explanation:

Given

$\sqrt{x + 2}= {-x}$

Required

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Square both sides

$( \sqrt{x + 2})^2= ({-x})^2$

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Equate to 0

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Expand

$x^2 + x -2x - 2 = 0$

Factorize:

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Split:

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2 years ago

What are the factors of the expression x^2+x-20?

tatyana61 [14]

Answer:

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Step-by-step explanation:

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2 years ago