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Alex Ar [27]
3 years ago
15

Answer ASAP for BRAINLIEST (NO LINKS OR I REPORT)

Mathematics
2 answers:
Westkost [7]3 years ago
8 0

Answer:

radius = 3 feet

Step-by-step explanation:

V = 1/3πr²h

15π = 1/3πr²·5

you can divide each side by 5π to get:

3 = r²/3

r² = 9

r = \sqrt{9} which is 3

Vlad [161]3 years ago
5 0

Answer:

3

Step-by-step explanation:

((r^2)h\pi )/3=volume of a cone

15\pi =((r^2)h\pi )/3

they say that the height is 5 so insert 5 for h

15\pi =\frac{r^2(5)\pi } {3}

solve for r

multiply both sides by 3

45\pi =r^25\pi

divide both sides by 5

9\pi =r^2\pi

r=3

Hope that helps :)

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bixtya [17]
7/12 u need to multiply 3*4 and u keep the numerator the same
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3 years ago
A 15 m pole is leaning against a wall. The foot of the pole is 10 m from the wall. Find the angle the pole makes with the ground
nataly862011 [7]

Answer:

∅ ≈ 48.2º

Step-by-step explanation:

cos∅ = adj/hyp = 10/15 = 2/3

Therefor

∅ = arccos 2/3

use calculator

∅ = 48.189685104221402

∅ ≈ 48.2º

5 0
3 years ago
Answer this question please and thank you.
Mice21 [21]
I think It’s 0.70 and in fraction is 512/729
7 0
3 years ago
Read 2 more answers
Solve using the quadratic formula: 2x2-9x+12=0
marta [7]

Answer:

no solution

Step-by-step explanation:

For getting the nature of solution of the quadratic equation of the form:

ax² + bx + c = 0

We need to find Discriminant which is:

Discriminant (D) = b² - 4ac

  • If D < 0, there is no solution of equation.
  • If D = 0, there are two equal and real solution of equation
  • If D < 0, there are two real and distinct solution of equation

Here we have equation is:

2x² - 9x + 12 = 0

∴ a=2, b = -9, c = 12

⇒ D = 81 - 4 × 2 × 12 = -16 < 0

Hence, there is no solution of given equation.

5 0
3 years ago
Solve by Elimination:<br> 8x + 6y = -5<br> 10x + 6y= -13
jonny [76]

Answer:

x= -4 and y= 27/6

Step-by-step explanation:

-(8x + 6y = -5) which converts to -8x -6y = 5

10x + 6y = -13

simplify from there

-8x + 10x = 2x ; -6y + 6y = 0 ; 5 - 13 = -8

soo, now you have

2x = -8

x = -4

then, plug in to find y

8(-4) + 6y = -5

-32 + 6y = -5   add 32 on both sides

6y = 27    divide both sides by 6

y= 27/6 or 4.5

8 0
3 years ago
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