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3 years ago

you earned a 90% on a science test yoy answer 18 questions correctly how many questions were on the test

Mathematics

1 answer:

Talja [164]3 years ago

6 0

X= entire test
if
18=.9x
then divide both sides by .9
18/ .9
and x = 20
20 questions total on the test

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yuradex [85]

Steps to solve:

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2 years ago

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Need help! will award brainiest

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Answer:

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1 year ago

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aksik [14]

Answer:

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Step-by-step explanation:

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3 years ago

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Viefleur [7K]

2x^2 + 4x + 1 = 0

2x^2 + 4x + 1 - 1 = 0 - 1

2x^2 + 4x = -1

X(2x + 4) = -1

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I believe these are the solutions. If not you can use the quadratic formula to solve for the roots, solutions.

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2 years ago

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Mademuasel [1]

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