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anygoal [31]
3 years ago
8

If 3x−y=12, what is the value of 8x--2y

Mathematics
1 answer:
marta [7]3 years ago
3 0

Answer:

wait few minutes i will try

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If the mean of a positively skewed distribution is 126, which of these values could be the median of the distribution?
Jlenok [28]

The mean is larger than the median in a positively skewed distribution
so the median is less than the mean in a positively skewed distribution
118
7 0
3 years ago
Please help, i dont understand an ounce of this
nignag [31]

Let x be the length of each side of the nonagon. We then split up the nonagon into 9 congruent, isosceles triangles, each with base = x and height = 12. Then the area of each triangle is 1/2 • x • 12 = 6x, so the total area of the nonagon will be 9 • 6x = 54x.

To find x, we can use some facts from geometry and trigonometry.

• In any polygon, the sum of the measures of the exterior angles is 360°. So each of these exterior angles will measure 360°/9 = 40°.

• Exterior angles are supplementary to the interior angles. So each interior angle will measure 180° - 40° = 140°.

• Each of the 9 triangles are isosceles with base angles measuring half the interior angles of the nonagon, 140°/2 = 70°.

• Cut the triangle in half along the labeled inradius of the nonagon, which has length 12. In the resulting right triangle, we have

tan(70°) = 12 / (x/2)

and solving for x gives

tan(70°) = 24/x

x = 24/tan(70°)

x = 24 cot(70°) ≈ 8.7

Then the total area of the nonagon is

54x = 54 • 24 cot(70°) ≈ 471.7

4 0
2 years ago
Rose wants to buy a toy that costs $14. If she gives the cashier $20, which equation will tell you how much change Rose gets bac
irga5000 [103]

Answer:

$20-$14=$6

Step-by-step explanation:

this is correct because if you give the $20 to them and the toy costs $14 then you subtract that from the amount you gave them then whatever is left is how much you get back.

brainliest?

4 0
3 years ago
Find x <br> 3x+1=2x-2<br> show all work pls
spayn [35]
See attached photo:

8 0
3 years ago
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A reasonable estimate for the mass of a baby would be 7 __ pounds
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Maybe 7.4 pounds idk sorry if I’m wrong
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