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vodka [1.7K]
3 years ago
13

What is the angle of elevation to the nearest tenth of a degree to the top of a 55ft building from 95ft away? Please help fast.

Mathematics
1 answer:
hammer [34]3 years ago
4 0

Answer:

30.1°

Step-by-step explanation:

Let A = angle of elevation

tan A = 55/95

A = arctan 55/95

    = 30.1°

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Kent multiplies both sides of the equation below by an expression. k + StartFraction 12 Over k EndFraction = 8 Then he moves all
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Answer:

k^2-8k+12=0D

Step-by-step explanation:

Explanation:

1) Given equation:

         k+12/k=8

2) Multiplication property of equality:

        k(k+12/k)=8k

3) Distributive property:

        k^2+12k/k=8k

4) Simplification:

        k^2+12=8k

5) Subtraction property of equality:

        k^2-8k+12=0

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3 years ago
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Answer:

4+c=2\frac{1}{4}+2\frac{1}{3},\\\\\frac{7}{12}\:\text{more cups of flour}

Step-by-step explanation:

The total amount of flour, in cups, Matthew needs is equal to 2\frac{1}{4}+2\frac{1}{3}=4\frac{7}{12}. Because he only has 4 cups, we can write the following expression to determine how many additional cups of flour he needs:

4+c=2\frac{1}{4}+2\frac{1}{3},\\\\4+c=\frac{7}{12}, \\\\c=\boxed{\frac{7}{12}\:\text{more cups of flour}}

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2 years ago
What is the mean absolute deviation of the data set {30,33,36,34,52}?
Georgia [21]

Answer:

6

Step-by-step explanation:

I took the test and got 100%

I hope i helped and that i get brainliest :P

8 0
3 years ago
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What is the reflection in the x-axis & what’s the reflection in line y=x?
marishachu [46]

Answer:

  a) (3, -4), (2, 4), (-5, -6)

  b) (4, 3), (-4, 2), (6, -5)

Step-by-step explanation:

a) Reflection in the x-axis negates the y-coordinate:

  (x, y) ⇒ (x, -y)

  (3, 4) ⇒ (3, -4)

  (2, -4) ⇒ (2, 4)

  (-5, 6) ⇒ (-5, -6)

__

b) Reflection in the line y=x swaps the x- and y-coordinates:

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  (3, 4) ⇒ (4, 3)

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  (-5, 6) ⇒ (6, -5)

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