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2 years ago

Which expression is equivalent to 12r + 8p –34r – 2p?

Mathematics

2 answers:

Pie2 years ago

4 0

Answer:

The answer should be -22r + 6p.

This means none of the answers are correct or you dropped a wrong question

Step-by-step explanation:

Collecting like terms, we have

12r - 34r +8p - 2p

-22r + 6p

ELEN [110]2 years ago

3 0

Answer:

It is C -14r+6p

Step-by-step explanation:

If you want the explanation just tell me

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fiasKO [112]

Answer: 125.80 ft

Step-by-step explanation:

Asuming the described situation is as shown in the figure below, we need to find the distance $h$ between the kite and Jacks house, but first we need to find the $x$ , $y$ and then $d$ .

How?

We will use trigonometry, especifically the trigonometric functions sine and cosine:

For $y$ :

$sin(65 \°)=\frac{y}{45 ft}$ (1)

Where $y$ is the opposite side to the angle and $45 ft$ the hypotenuse.

Isolating $y$ :

$y=40.78 ft$ (2)

For $x$ :

$cos(65 \°)=\frac{x}{45 ft}$ (3)

Where $x$ is the adjacent side to the angle.

Isolating $x$ :

$y=19.017 ft$ (4)

Finding $d$ :

$d=x+100 ft$ (5)

$d=19.017 ft +100 ft$

$d=119.017 ft$ (6)

Now that we have found these values, we have to work with a bigger triangle, where the hypotenuse is the distance between the kite and Jack's house $h$ and the sides are the values calculated in (4) and (6).

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$h^{2}=y^{2} +d^{2}$ (7)