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jeyben [28]
3 years ago
12

PLEASE HELP, I don’t understand it at all!!

Mathematics
2 answers:
netineya [11]3 years ago
7 0

Answer:

15km

Step-by-step explanation:

Use the Pythagorean Theorem

a²+b²=c²

9²+12²=c²

81+144=c²

225=c²

Square root both sides

c= 15km

GuDViN [60]3 years ago
4 0

Answer:

d=15

Step-by-step explanation:

So in this question we are using the Pythagorean Theorem. a^2 + b^2 = c^2

The side opposite to the right angle is the hypotenuse.

So to solve the equation put in the values for a and b.

9^2 + 12^2 = c^2

81 + 144 = c^2

225 = c^2

Now take the square root of 225

\sqrt{225} = 15

so d = 15

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Volume=(4/3)pi(r^3)

radius=1/2diameter
d=36
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radius=18


subsitute
volume=4/3 pi 18^3
volume=4/3 pi 5832
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aprox pi to 3.14
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answer is 24416.64 yd^3
8 0
4 years ago
Please answer the WHOLE question and explain!
exis [7]

The total weight of candies is unknown. Let x = the total weight of candies.

"One student ate 3/20 of all candies and another 1.2 lb":

The first student ate (3/20)x plus 1.2 lb which is 0.15x + 1.2.

"The second student ate 3/5 of the candies and the remaining 0.3 lb."

The second student ate (3/5)x and 0.3 lb which is 0.6x + 0.3.

Altogether the 2 students ate 0.15x + 1.2 + 0.6x + 0.3.

That was all the amount of candies, so that sum equals x.

0.15x + 1.2 + 0.6x + 0.3 = x

Now we solve the equation for x to find what the total amount of candies was.

0.75x + 1.5 = x

-0.25x = -1.5

x = 6

The total amount of candies was 6 lb.

The first student ate 0.15x + 1.2 = 0.15(6) + 1.2 = 0.9 + 1.2 = 2.1, or 2.1 lb of candies.

The second student ate 0.6x + 0.3 = 0.6(6) + 0.3 = 3.6 + 0.3 = 3.9, or 3.9 lb of candies.

Answer: The first student ate 2.1 lb of candies, and the second student ate 3.9 lb of candies.

7 0
4 years ago
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Lana71 [14]
Okay, to solve this you have to multiply 8.28 by 1.5. This equals 12.39. Then you multiply that by 46. This equals 569.94. I disagree.
3 0
3 years ago
Some help me plss????
raketka [301]

Answer:

[-9,11]

Step-by-step explanation:

The domain is the x values that the line is on, basically. You use brackets because the points are included.

7 0
3 years ago
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Ne4ueva [31]

Answer:

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Step-by-step explanation:

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