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2 years ago

Solve for x. 2x2=72 −6 and 6 −36 and 36 −8 and 8 −18 and 18

Mathematics

1 answer:

andrey2020 [161]2 years ago

8 0

Answer:

Solve for x.

2x2=72

−6 and 6

−8 and 8

−18 and 18

−36 and 36

your answer would be -6 and 6

Step-by-step explanation:

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The angle of elevation to the top of a water tower from point A on the ground is 19.9°. From point B, 50.0 feet closer to the to

zepelin [54]

Answer:

Answer in terms of a trigonometric function :

$h = \frac{20tan(19.9)}{0.4-tan(19.9)}$

Answer in figures

$h = 190.5 feet$

Step-by-step explanation:

Consider the sketch attached below to better understand the problem.

Let x be the distance between point B and the base of the water tower.

$tan (19.9)=\frac{h}{50+x} ---------------equation 1\\$

$tan (21.8)=\frac{h}{x}----------------equation 2$

From equation 2,

$x =\frac{h}{tan21.8}=\frac{h}{0.4}$

substituting the value of x into equation 1, we get

$tan (19.9)=\frac{h}{50+(\frac{h}{0.4} )}$

$tan 19.9=h\times \frac{0.4}{20+h}$

cross multiplying,

$20\times tan(19.9) +htan(19.9)=0.4h$

$20tan(19.9)= h(0.4-tan(19.9))$

$h= \frac{20tan (19.9)}{0.4-tan (19.9)}$

The height of the tower is $h= \frac{20tan (19.9)}{0.4-tan (19.9)}$ in terms of the trig function "Tan"

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3 years ago

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Step 1: Find the mean.

Step 2: For each data point, find the square of its distance to the mean.

Step 3: Sum the values from Step 2.

Step 4: Divide by the number of data points.

Step 5: Take the square root.

Step-by-step explanation:

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2 years ago

Solve for x. 2x2=72 −6 and 6 ​−36​ and 36 ​−8​ and 8 ​−18​ and 18

Solve for x. 2x2=72 −6 and 6 −36 and 36 −8 and 8 −18 and 18