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3 years ago

Can someone help me ASAP please. I'll give extra points if right fr

Mathematics

1 answer:

9966 [12]3 years ago

6 0

Answer:

y = -1/4x + -6

Step-by-step explanation:

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An electrician needs to run a cable from the top of a 40-foot tower to a transmitter box located 30 feet away from the base of

grin007 [14]

The cable should be 50 feet.

If you draw the picture, you will see that you have a right triangle.

Let's just use the Pythagorean Theorem to find the hypotenuse (or cable).

30^2 + 40^2 = c^2
2500 = c^2
50 = c

3 0

3 years ago

Point A is located at (-2, 4). After it is transformed, point A' is located at (2, 4). What could the transformation be?

Sergeeva-Olga [200]

The only one that wouldn’t change the y-value is a reflection across the y-axis.

4 0

3 years ago

Read 2 more answers

Write two different equations to describe each situation. a) You buy 3 identical shirts and 2 identical pairs of socks and spend

Ronch [10]

Answer:

3x + 2y = 38, 3a + 2b = 38

Step-by-step explanation:

An equation may be defined as a statement that shows two mathematical expressions to be equal. It is to equate one thing to another thing.

In the context, two different equations for the situations are :

i). Let the shirt be represented by x

And the socks be represented by y

Therefore, according to the question,

3x + 2y = 38

ii). Let the shirt be represented by a

And the socks be represented by b

Therefore, according to the question,

3a + 2b = 38

7 0

3 years ago

If a simple harmonic motion is described by x = 3 cos(πt), starting from t = 0 s, what is the first occurrence of a value of t f

poizon [28]

Answer:

The first occurence of t for which x = 0 is t = 0.5.

Step-by-step explanation:

The harmonic motion is described by the following equation.

$x(t) = 3\cos{\pi t}$

What is the first occurrence of a value of t for which x = 0?

This is t when $x(t) = 0$ . So

$x(t) = 3\cos{\pi t}$

$3\cos{\pi t} = 0$

$\cos{\pi t} = \frac{0}{3}$

$\cos{\pi t} = 0$

The inverse of the cosine is the arcosine. So we apply the arcosine function to both sides of the equality.

$\arccos{\cos{\pi t}} = \arccos{0}$

$\pi t = \frac{\pi}{2}$

$t = \frac{\pi}{2 \pi}$

$t = \frac{1}{2}$

$t = 0.5$

The first occurence of t for which x = 0 is t = 0.5.

3 0

3 years ago

The area of a circle is 153.86 square meters. What is the diameter of the circle? Use 3.14 for π.

ryzh [129]

Answer:

Option (2). 14 m

Step-by-step explanation:

Formula to get the area of a circle 'A' = $\pi r^{2}$

where r = radius of the circle

Given in the question,

Area of the circle = 153.86 square meters

By putting the values in the formula,

153.86 = πr²

r = $\sqrt{\frac{153.86}{\pi } }$

r = $\sqrt{49}$

r = 7 meters

Diameter of circle = 2 × (radius of the circle)

= 2 × 7

= 14 meters

Therefore, diameter of the circle is 14 meters.

Option (2) is the answer.

4 0

3 years ago