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Natalija [7]
3 years ago
9

A 29 foot ladder leans against a building so that the angle between the ground and the ladder is 77º. How

Mathematics
1 answer:
Dimas [21]3 years ago
7 0

Answer:

5 √ 10 + 2 √ 5 ft high

Step-by-step explanation:Explanation:

Let  h be the height to which latter of length of 20 ft reach then using Sine formula in right triangle with hypotenuse 20 & vertical leg h & opposite acute angle 0 = 72∘ sin θ =h 20 sin 72∘= h 20

h

=

20

sin

(

90

∘

−

18

∘

)

=

20

cos

18

∘

=

20

(

√

10

+

2

√

5

4

)

=

5

√

10

+

2

√

5

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Mnenie [13.5K]
0.5*m*n*4=0.5*4*m*n = 2*m*n = 2mn

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0.5m + 4n ≠ 2mn

The answer is None of the above
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3 years ago
2. What is the sum of two numbers that are additive inverses?​
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Answer:

what are the choices

Step-by-step explanation:

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3 years ago
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Reptile [31]

Complete question :

What is the average amount of milk used for an order of pancakes? Enter your answer as a fraction or mixed number in simplest form.

1/2c, 1/4c, 1/2c, 3/4c, 1/2c, 3/4c, 1/2c, 1/4c, 1/2c, 1/2c

Answer:

1/2c

Step-by-step explanation:

Taking the sum :

1/2c + 1/4c + 1/2c + 3/4c + 1/2c + 3/4c + 1/2c + 1/4c + 1/2c + 1/2c = 6/2c + 2/4c + 6/4c

6/2c + 2/4c + 6/4c

3/1 + 1/2 + 3/2 = (6 + 1 + 3) / 2 = 10 /2

= 5

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Average = 5 / 10 = 1 /2 c

5 0
3 years ago
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Vitek1552 [10]

Answer:

this is not a right triangle

Step-by-step explanation:

^  = squared

The formula forthe Pythagorean theorem is    a^+ b^   = c^

If this is a right triangle this must be true

6^ +    8^   =   14^

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100  is not equal to 196

So this is not a right triangle

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3 years ago
Hayley had 3.93 grams of salt. She added more salt to the sample and now has 4.87 grams. How many grams of salt did Hayley add?
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