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2 years ago

Quadrilateral ABCD is a parallelogram. If AB=2x-10 and CD=x+30,then AB=_

Mathematics

1 answer:

Lerok [7]2 years ago

8 0

Answer: 70

Step-by-step explanation:

Because opposite sides of a parallelogram are equal, AB=CD. So,

2x-10=x+30

x=40

Therefore, AB=2(40)-10=70

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2 years ago

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2 years ago

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2 years ago

2[3(4^2 +1)] - 2^3.

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Step-by-step explanation

P.E.M.D.A.S

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3 years ago

There are 5 questions on a multiple choice exam, each with five possible answers. If a student guesses on all five questions, wh

Mrac [35]

Answer:

$20.5\%$

Step-by-step explanation:

Let's write out a case for two specific questions being correct and the rest being incorrect:

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The $\frac{4}{5}$ represents the chances of getting the question incorrect, as there are 5 answers and 4 incorrect answer choices.

The equation above does show the student getting two answers correct and three answers incorrect, but it only shows one possible case of doing so.

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2 years ago

Quadrilateral ABCD is a parallelogram. If AB=2x-10 and CD=x+30,then AB=_​

Quadrilateral ABCD is a parallelogram. If AB=2x-10 and CD=x+30,then AB=_