3 years ago

• A certain test consists of multiple-choice questions

Mathematics

1 answer:

Elodia [21]3 years ago

3 0

Answer: 21

Step-by-step explanation:

My teacher just did it

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7•2 + 7•23= pls help

katrin [286]

Answer:

175

Step-by-step explanation:

if thats what you mean

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3 years ago

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Need help with this question please!!

Luba_88 [7]

Answer:

11.1

Step-by-step explanation:

Use the Pythagorean theorem to find the unknown side.

$a^{2} +b^{2} =c^{2} \\AB^{2} +BC^{2} =AC^{2} \\AB^{2} +19^{2} =22^{2} \\\\AB^{2}=22^{2}-19^{2\\AB=\sqrt{123} \\AB=11.1$

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3 years ago

Two boys on bicycles, 45 miles apart, began racing directly toward each other. The instant they started, a fly on the handle bar

BlackZzzverrR [31]

Complete question is: Each bicycle have speed 10 mi/h and fly flies at 21 mi/h. How far the fly flies?

Answer:

47.25 mi

Step-by-step explanation:

The relative velocity of the bicycles is 10+10 = 20 mi/h

Time in which the two bicycles meet:

$t=\frac{45}{20} = 2.25 h$

Distance covered by fly:

$d=vt\\d=21mi/h\times 2.25h \\d=47.25 mi$

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3 years ago

How can you find the slope of the line that passes through the points (0,0) and (2,4)

Nata [24]

Step-by-step explanation:

Graph it and find the rise over run. which then gives you your slope

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3 years ago

Which angles are a linear pair

mihalych1998 [28]

Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

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3 years ago