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Lelu [443]
3 years ago
14

∠ R and∠ S are complementary. If m ∠ R = 12x - 3 and m ∠ S = 7x - 2, find m ∠ R.

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Step-by-step explanation:

<h2>Sum of two complementary angle is 90°</h2><h2 /><h2>so. </h2><h2><R+<S =90°</h2><h2>12x-3+7x-2=90°</h2><h2>19x-5=90°</h2><h2>19x=95°</h2><h2>X= 5</h2>

<h2><R= 60-3=57°</h2>
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nirvana33 [79]

Answer:

V = 115.3 ft³

Step-by-step explanation:

The left part of the figure shows a cube of side length 4.2 ft.  The volume of a cube is V = s³, where s is the side length.  Hence, the volume of this particular cube is V = (4.2 ft)³ = 74.088.

The volume of a pyramid is V = (1/3)(base area)(height).

Here V = (1/3)(4.2 ft)²(7 ft) = 41.16 ft³.

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V = 115.3 ft³ after rounding up to the nearest tenth.

3 0
3 years ago
A pack of cinnamon-scented pencils sells for $5.00. What is the sales tax rate if the total cost of the pencils is $5.20?
Leya [2.2K]
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3 0
3 years ago
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Nikitich [7]
6:3 boys to girls.
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3 years ago
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Answer:

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6 0
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