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3 years ago

Don’t know how to do this

Mathematics

1 answer:

mash [69]3 years ago

6 0

Answer:

$horizontal : 76 \\ \\ \\ vertical : 33 \\ \\ pls \: check \: this \: answer \\$

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Two walls of a canyon form the walls of a steady flowing river. From a point on the shorter wall, the angle of elevation to the

Sunny_sXe [5.5K]

Answer:

x is approximately 226.3 feet

y is approximately 308.6 feet

z is approximately 226.3 feet

Step-by-step explanation:

The given parameters of the walls are;

The angle of elevation from the top of the shorter wall to the top of the opposing wall, θ₁ = 20°

From the diagram, the angle of depression from the top of the shorter wall to the bottom of the opposing wall, θ₂ = 45°

The distance from the bottom of the shorter wall to the base of the opposing wall, l = 320 feet

x = The height of the shorter wall = l × sin(θ₂)

∴ x = 320 feet × sin(45°) = 320 feet × (√2)/2 = 160·√2 feet ≈ 226.3 feet

∴ x ≈ 226.3 feet

By observation, we have;

y = x + z × tan(θ₁)

Where;

z = l × cos(θ₂)

∴ y = 160·√2 + 320 × cos(45°) × tan(20°) ≈ 308.6

y ≈ 308.6 feet

z = l × cos(θ₂)

∴ z = 320 × cos(45°) = 160·√2 ≈ 226.3

z ≈ 226.3 feet.

6 0

3 years ago

A student is solving the equation. 2x – 4 – (x + 2) = 6x If the student solves the equation correctly, what is the value of x ?

ANTONII [103]

Answer:

x = $-\frac{6}{5}$

Step-by-step explanation:

2x – 4 – (x + 2) = 6x is the given equation

Now simplifying both sides, we get

2x - 4 - x - 2 = 6x

taking like terms on each side of the equality, we get

2x - x - 6x = 4 + 2

or, -5x = 6

or x = $\frac{6}{-5}$

hence, the value of x = $-\frac{6}{5}$

7 0

3 years ago

What information is necessary to prove the triangles congruent by ASA? By AAS? show work plssssss

monitta

Asa you start at the angel when it’s marked and then you move to the right. it’s simple when you understand.

3 0

3 years ago

The following week , tamiko earns a check for 109.60 for working at a fast food restaurant and a small bonus check for 34.15 det

AlexFokin [52]

Answer:

Tamiko will save 86.25

Step-by-step explanation:

Tamiko's earning from fast food restaurant check = 109.60

Tamiko's earning from small bonus check = 34.15

net amount earned by Tamiko = Tamiko's earning from fast food restaurant check + Tamiko's earning from small bonus check

net amount earned by Tamiko = 143.75

As she wants to save $\frac{3}{5}$ of the net amount.

the amount saved = $(\frac{3}{5} ) 143.75$

= $86.25$

4 0

3 years ago

Find the rate of change for each set of ordered pairs. What is the average rate of change of all the sets?

valina [46]

Answer:

Rate of change for two ordered -pairs i,e $(x_1, y_1)$ and $(x_2, y_2)$ is given by;

$\text{Rate of change} = \frac{y_2-y_1}{x_2-x_1}$

(-1, 12) and (6, 26)

Then;

$\text{Rate of change} = \frac{26-12}{6-(-1)}$

$\text{Rate of change}(A) = \frac{14}{7} =2$

(-1, -9) and (3, 3)

Then;

$\text{Rate of change} = \frac{3-(-9)}{3-(-1)}$

$\text{Rate of change}(B) = \frac{12}{4} =3$

(12, 6) and (11, 13)

Then;

$\text{Rate of change} = \frac{13-6}{11-12}$

$\text{Rate of change}(C) = \frac{7}{-1} =-7$

Now, find the average rate of change of all the sets:

Average defined as the sum of all the observation to the number of observation.

$\text{Average rate of change of all sets} =\frac{A+B+C}{3} =\frac{2+3-7}{3} = -\frac{2}{3}$

7 0

3 years ago

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