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AleksAgata [21]
4 years ago
8

An isosceles trapezoid has bases of 4 and 10. If the base angle is 45 what is the area

Mathematics
1 answer:
Alex4 years ago
8 0
The triangle that the height makes would be a 45-45-90 special right triangle. So the height is 3√2, and to find the area, it would be the average of the bases, 7, multiplied by 3√2. So the area of the trapezoid is 21√2.
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Hope this helps!
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PLEASE HELP<br><br><br> What is the value of x?
AleksAgata [21]
The angles inside a triangle add up to 180°
The 3rd angle is supplementary to (6x+1)°
Supplementary means they make a straight line (i.e 180°)

1st angle = 79°
2nd angle = (2x+10)°
3rd angle = 180° - (6x+1)°

180 = 79 + (2x+10) + 180 - (6x+1)
180 = 79 + 2x + 10 + 180 - 6x - 1
combine like terms
180 - 180 - 79 - 10 + 1 = 2x - 6x
-88 = -4x
-88/-4 = x
22 = x
3 0
3 years ago
A box's volume is equal to 600 cubic
olga2289 [7]

Answer:

Step-by-step explanation:

Length = x

width = x - 7

height = x - 10

volume = 600 in^3

Volume = L * w * h

600 = x * (x - 7)*(x - 10)

600 = x * (x^2 - 17x + 70)

600 = x^3 - 17x^2 + 70x

x^3 - 17x^2 + 70x - 600 = 0

There is a genius somewhere that could solve this using algebra. The rest of us have 2 choices. We can graph it (see below) or we could use a program that solves it for us. I'll do both for you.

a = 1

b  = - 17

c = 70

d = - 600

There is only 1 real solution: x = 15

L = 15

w = 8

h = 5

That has to be one of the ugliest graphs made. It does into the hundreds of thousands and it still looks like a straight line. Trust me. It's not.

3 0
3 years ago
It is believed that 36% of the US population has never been married, 32% are divorced, 27% are married, and 5% are widowed. You
Katena32 [7]

Answer: the smallest number of people required for the sample to meet the conditions for performing inference is 100

Step-by-step explanation:

Given that;

36% of US population has never been married

32% are divorced

27% are married

5% are widowed

Taking a simple random sample of individuals to test this claim;

we need expected count in each cell to be at least 5, here the smallest proportion is 5% = 0.05

so we only need to satisfy condition for its expected count;

n × 0.05 ≥ 5

n = 5 / 0.05 = 100

Therefore the smallest number of people required for the sample to meet the conditions for performing inference is 100

6 0
3 years ago
A father and his daughter are interested in the same baseball game. The father sits next to his radio at home and listens to the
pychu [463]

Answer:

I think it is the daughter

Step-by-step explanation:

only because she is only 115 m away from home plate itself and the father is 132m away which is going to take some for the sound waves to travel and for anyone to hear . Also if you don't believe me, more of an explanation is ...

Kilometers are 1,000 times larger than meters. The meter is the base unit for measuring length or distance in the metric system.

132 km x 1,000 = 132,000m  and 115 is already in meters now i think that is simple enough of an explanation. Your welcome. I know I'm right

8 0
3 years ago
A flower garden has 3 red rose bushes, 2 yellow rose bushes, and 5 white
Otrada [13]
The ratio of yellow to total is 2 to 8, or 1:4 if you divide both by 2. So the answer is B.
7 0
3 years ago
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