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sp2606 [1]
3 years ago
5

Can someone help me with 10 math questions (:

Mathematics
1 answer:
olga2289 [7]3 years ago
3 0
So volue of a cone=1/3 times (area of base[which is a circle]) times height

area of base=area of circle=pi time radius^2
area=pi times 5^2
area=pi times 25=25pi

1/3 times 25pi times 18
25pi times 18 times 1/3
25pi times 18/3
25pi times 6=150pi


the answer is 150π in^3 or 150π cubic inches or C

( to solve, aprox pi to 3.141592 an multiply 150 by 3.141592=471.239 in^3)
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Find the measure of ∠B if ∠A = 5/2 x + 16 ∠B = 7/2 x + 20 ∠C = 3/2 x + 68 ∠D = 3/2 x + 40
ella [17]

Answer

b = 104

Step-by-step explanation:

A + B + C + D = 360

after sum

360 = 9x + 144

so

x = 24

then

B = (7/2) 24 + 20

B = 104

3 0
3 years ago
Which expression can you substitute in the indicated equation to solve the system of equations below?
Mama L [17]

You can see almost immediately that the second equation, 3x + y = -2, can be solved for y: y = -3x - 2. (Answer A). This -3x - 2 can in turn be subbed for y in the first equation, 4x + 3y = 4. Doing so, we get 4x + 3(-3x - 2) = 4.

Carrying out the indicated opeations: 4x - 9x - 6 = 4, or -5x = 10. Thus,

x = -2. Find y using y = -3x - 2 (from above): y = -3(-2) - 2 = 4.

Thus, the solution is (-2,4). We were not asked to solve this system of equations, but doing so illustrates the helpfulness of elimination of variables in solving simultaneous equations.

4 0
2 years ago
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lyudmila [28]

i graphed it and they cross at (2,-3)

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2 years ago
Write the equation of the line shown in the graph.<br><br> Y = ?
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hunny there no graph but let me help u <3

5 0
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PLEASE ANSWER THIS QUESTION !! 30 POINTS AND BRAINLIEST TO THE FIRST PERSON!
zhannawk [14.2K]
2(x-3) <= 16
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I think that's the answer but I am sorry if it is wrong.
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3 years ago
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