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Afina-wow [57]
3 years ago
8

Plz help I need this last question

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Step-by-step explanation:

v =  \frac{\pi r {}^{2}h }{3}

3v = \pi  {r}^{2} h

\frac{3v}{\pi h}  =  {r}^{2}

\sqrt{ \frac{3v}{\pi h} }  = r

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PLZ HELP AND SHOW YOUR WORK &lt;3333<br><br><br> Substitution.<br><br> 3x+2y=11<br><br> y=5x-1
liraira [26]
Hey there! :D

Substitute y for 5x-1. 

3x+2y=11

y=5x-1

3x+2(5x-1)=11

3x+10x-2=11

13x-2=11

13x=13

x=1

Now, plug that in to find y.

y=5x-1

y=5(1)-1

y=5-1

y=4

(1,4) <== the solution

I hope this helps!
~kaikers
8 0
3 years ago
What is equivalent to 40/64
Nadya [2.5K]

Answer: 5/8


Step-by-step explanation:


8 0
2 years ago
PLEASE ANSWER ASAP<br> i can't figure out the answer
miv72 [106K]
Answer is C have a nice day
3 0
3 years ago
What does this mean we never went over it..: Find the difference between 827 and 533. * Please tell me. Thank you!
Nostrana [21]

Answer:

294

Step-by-step explanation:

Difference means subtraction, so you just subtract 533 from 827.

827-533=294

hope this helps! : )

8 0
3 years ago
Read 2 more answers
9. If f(x)=-2x^2+4x-6, <br> then f(2)=
Romashka-Z-Leto [24]

Answer:

f(2) = -6

General Formulas and Concepts:

Order of Operations: BPEMDAS

Substitution and Evaluation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = -2x² + 4x - 6

f(2) is x = 2

<u>Step 2: Solve</u>

  1. Substitute:                          f(2) = -2(2)² + 4(2) - 6
  2. Exponents:                         f(2) = -2(4) + 4(2) - 6
  3. Multiply:                              f(2) = -8 + 8 - 6
  4. Add:                                    f(2) = -6
3 0
3 years ago
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