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Xelga [282]
3 years ago
8

What the answer to the question

Mathematics
1 answer:
ruslelena [56]3 years ago
5 0

Answer:

c

Step-by-step explanation:

When we know two sides and the included angle, there is a formula we can use.

We know angle C = 35º, and sides a = 20cm and b = 19.5cm.

using the formula

Area =(½)ab sin C(angle)

Put in the values we know:

(20×19.5÷2)×sin(35)=

111.8474050885 cm^2

rounded = 111.85 cm^2

answer is c

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The tile along the edge of a triangular community pool needs to be replaced. A right triangles, where the hypotenuse is labeled
Anastaziya [24]

Answer:

C. 12x² + 8x + 25

Step-by-step explanation:

A. 12x² + 15

B. 20x² + 25

C. 12x² + 8x + 25

D. 24x² + 16x + 50

Hypotenuse = 8x²

Height = 4x² + 15

Base = 8x + 10

Perimeter of the triangle = hypotenuse + height + base

= 8x² + (4x² + 15) + (8x + 10)

= 8x² + 4x² + 15 + 8x + 10

Perimeter of the triangle = 12x² + 8x + 25

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3 years ago
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Luis set up an A-frame ladder so that the angle formed between each side of the ladder and the ground is 125 degrees. What is th
Firlakuza [10]

Answer:

70°

found by considering A-frame ladder as a triangle

Step-by-step explanation:

Given that,

angle form on either side of A-frame ladder with the ground = 125°(exterior)

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1) find interior angle form by A-frame ladder with the ground

125 + x = 180         sum of angles on a straight line

x = 180 - 125

x = 55°

2) find the angle on top of ladder

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110 + y = 180

y = 180 - 110

y = 70°

3 0
4 years ago
43 • 4-6 = 45 • 4p<br> pls answer fast
Tanzania [10]
4-6 is -2, so that means that we now have 43•-2=45•4p so we then subtract 45 from both sides, leaving us with -2•-2=4p, now we multiply -2•-2 and get 4, then divide by 4 to get p=1
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horsena [70]
The correct answer is (9 in the ones place) because dividing by 10 is moving back one tens place
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3 years ago
Write a mixed number between 7 and 8, and then write its reciprocal.
ycow [4]

Answer:

7 1/2 reciprocal: 9

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Flip the fraction for the reciprocol

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