How do you use numerical expressions to solve real-world problems?

Mathematics

2 answers:

crimeas [40]2 years ago

7 0

You multiply 7 x 3 then navigate to answer x $8.50

PilotLPTM [1.2K]2 years ago

5 0

There are many ways to do this, if you wanted to write a numerical expression for: Lauren had $7 she babysits for three hours and earned $8.50 per hour, you would write 7+3x8.50=M. It is much shorter and makes much more sense to write this expression than to write a whole story

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One acute angle of a right triangle is 12 degrees more than twice the other acute angle. Fine the acute angles of the right tria

Svetlanka [38]

Let one acute angle be X and one be Y
X+Y=90 -------Eq.1
2X+12=Y
2X-Y=-12------Eq.2
solving eq 1&2 we get,
3x=78
∴X=26
substituting value X in equation.1
X+Y=90
Y=90-26
∴Y=64
⇒answer:- X=26°
Y=64°

8 0

2 years ago

Can anyone explain this to me??

sergejj [24]

The answer is the last one. Except for the first one, the questions are asking which two line segments are congruent (or equal to each other) in the triangle. Hope this helps :3<span />

4 0

2 years ago

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olga55 [171]

Given:

The equation is:

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