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tensa zangetsu [6.8K]
2 years ago
9

Find the equation of a line that contains the points (-8, 7) and (-8, -2). Please help!!!

Mathematics
1 answer:
FrozenT [24]2 years ago
4 0

Answer:

x = -8

Step-by-step explanation:

(-8, 7) and (-8, -2)

m=(y2-y1)/(x2-x1)

m=(-2-7)/(-8+8)

m=(-9)/0

m = undefined slope or no slope

x = -8

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The ratio of volume of a cone and a hemisphere of same base radius and height is?
aliya0001 [1]

Answer:

1/2

Step-by-step explanation:

Since it is given that the cone and the hemisphere have the same height, and since the height of a hemisphere would be equal to its radius, the cones height must also be equal to its base radius.

With this information we can use the respective volume formulas.

Hemisphere:  \frac{2}{3}πr^3

Cone:  \frac{1}{3}πhr^2

Since h (height) = r we can say the cone volume equals:

\frac{1}{3}πr^3

Now to find the ratio we divide the cone volume equation by the hemisphere volume equation

pi and r^3 cancels out from the division and we are left with

ratio = (1/3)/(2/3)

ratio = 1/2

7 0
3 years ago
Which expression is equivalent to 4(5j + 7)?
frozen [14]

Answer: 4(5j+7) = 20j+28

Step-by-step explanation:

5 0
3 years ago
Find the perimeter of the figure when l = 15 m, w = 9 m, x = 3 m, and y = 6 m
Andru [333]

Answer:

54

Step-by-step explanation:15+15+9+9+3+3=54

8 0
3 years ago
on the blueprint of a house, 36 millimeters represents 7 meters.the length of the living room is 27 millimeters on the blueprint
tino4ka555 [31]
36/7 = 27/x.....36 mm to 7m = 27 mm to x m
cross multiply
(36)(x) = (27)(7)
36x = 189
x = 189/36
x = 5.25 m
7 0
3 years ago
Write expression as a sine or cosine of an angle.<br>cos 94° cos 18° + sin 94° sin 18° ​
MArishka [77]
<h3>Answer:  cos(76)</h3>

=========================================================

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

cos(A - B) = cos(A)cos(B) + sin(A)sin(B)

cos(A)cos(B) + sin(A)sin(B) = cos(A - B)

cos(94)cos(18) + sin(94)sin(18) = cos(94 - 18)

cos(94)cos(18) + sin(94)sin(18) = cos(76)

----------

We can verify this by use of a calculator. Make sure your calculator is in degree mode.

  • cos(94)cos(18) + sin(94)sin(18) = 0.24192
  • cos(76) = 0.24192

Both expressions give the same decimal approximation, so this helps confirm the two expressions are equal. You could also use the idea that if x = y, then x-y = 0. Through this method, you'll subtract the left and right hand sides and you should get (very close to) zero.

6 0
2 years ago
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