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Oksi-84 [34.3K]

3 years ago

8

Estimate the value of this expression by rounding each number to the nearest whole unit. (1.74)(9.95)(3.46) A. 80 B. 54 C. 60 D.

72

1 answer:

Vlada [557]3 years ago

4 0

The answer is C. 60 because if you multiply 1.74*9.95*3.46 you will get 59.90298 and if you round to the nearest whole then it's 60

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If the sum of the measure of two angles in a triangle is 101, then the measure

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Answer:

79 degrees.

Step-by-step explanation:

It is just a rule of trigonometry that all the angles inside ANY triangle will add up to 180 degrees.

There's only 3 possible angles in a triangle, so if you know what the sum of 2 are, its easy to find the last one.

All you have to do is 180 - 101, which equals 79 degrees.

Hope this helped : )

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If 3a - 2 = 10, what is the value of 8a + 1?

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3 years ago

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Help please will mark brainless 25 points due today

harkovskaia [24]

here's the solution,

we know that, sum of <u>measures</u> of each interior angle of a <u>triangle</u> = <u>180°</u>

<u>F</u><u>igure</u><u> </u><u>1</u><u>.</u>

=》

$40 + 32 + 9x + 9 = 180$

=》

$81 + 9x = 180$

=》

$9x = 180 - 81$

=》

$x = \frac{99}{9}$

=》

$x = 11$

<u>Figure</u><u> </u><u>2</u><u>.</u><u> </u>

=》

$42 + 63 + 4x + 15 = 180$

=》

$120 + 4x = 180$

=》

$4x = 180 - 120$

=》

$4x = 60$

=》

$x = \frac{60}{4}$

=》

$x = 15$

<u>Figure</u><u> </u><u>3</u><u>.</u>

=》

$45 + 45 + 3x - 21 = 180$

=》

$3x + 69 = 180$

=》

$3x = 180 - 69$

=》

$3x = 111$

=》

$x = \frac{111}{3}$

=》

$x = 37$

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3 years ago

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