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Kryger [21]
4 years ago
7

HELP QUICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Mathematics
2 answers:
horsena [70]4 years ago
5 0
Answer: D. 4

2 * 4 = 8

1.5 * 4 = 6




EleoNora [17]4 years ago
5 0
The answer is B. Because the obsolescent triangle is optimistic to the hydrotherapy.  

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4. Suppose a security light is set into the ground and aims its light at the top of the building. The angle of elevation of the
brilliants [131]

Answer:

a) The distance of the light's base from the bottom of the building is approximately: 5.2 ft

b) The length of the beam is approximately: 10.4 ft

Step-by-step explanation:

First, we have to recognize that we may draw a right triangle to picture our problem. Then, in order to find out the distance of the light's base from the bottom of the building, we need to use the tangent trigonometric function:

tan(angle) = opposite side / adjacent side

We know the angle and the opposite side and we want to find the adjacent side:

adjacent side = opposite side / tan(angle) = 9 ft / tan(60°) = 9 ft / = 9 ft / 1.73 = 5.2 ft

In order to find the length of the light  beam, we use Pythagoras Theorem:

leg1²+leg2² = hyp²

Since the length of the beam corresponds to the hypotenuse and since we already know the length of the two legs, it is just a matter of substituting the values:

hyp = square_root(leg1²+leg2²) = square_root(9² + 5.2²) ft = square_root(108.4) ft = 10.4 ft

7 0
3 years ago
Someone help<br><br>(Ignore the Make a istogram of the data part)
Musya8 [376]
I believe the answer you are looking for would be C.
3 0
3 years ago
3. Given 4x – 8y = 8:
Mazyrski [523]
Slope-intercept form is y = mx + b, so to turn that equation into slope-intercept you'll need to get y alone

4x - 8y = 8 --- subtract 4x
-8y = 8 - 4x --- divide by -8
y = -1 + (1/2)x --- reorder to match "mx + b"
y = (1/2)x - 1

in y = mx + b, "m" is the slope and "b" is the y-intercept. so for part B, your slope is (1/2) and your y-intercept is (-1). take the sign with you.

for part C, you'll need to know point-slope form: (y - y1) = m(x - x1)
you'll also need to be aware that "perpendicular" lines have a slope that is the opposite reciprocal of the original line.

the original slope is (1/2). change the sign to negative and form a reciprocal: your new slope is -2. plug that into your point-slope form

(y - y1) = m(x - x1)
(y - y1) = (-2)(x - x1)

and lastly, plug in your given point: (1, 2)

y - 2 = (-2)(x - 1)

so, just to look a little neater without all of the work:
A) y = (1/2)x - 1
B) m = (1/2), b = -1
C) y - 2 = (-2)(x - 1)
5 0
3 years ago
Evaluate the following expression<br>2+(3-2x2)x1​
Firdavs [7]

Answer:

1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which of these systems of linear equations has an infinite number of solutions? 3 x minus 8 y = 21. 6 x minus 16 y = 46. 3 x + 6
DiKsa [7]

The answer is B, 3x + 6y = 22 & 6x +12y = 44.

5 0
3 years ago
Read 2 more answers
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