1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Free_Kalibri [48]
3 years ago
5

Help me answer question 8a and b, and I’ll give u 10 points lol

Mathematics
1 answer:
iren [92.7K]3 years ago
3 0

Answer:

Step-by-step explanation:

Find h when v = 20 and r = 3

Putting values in the formula

20 = (3.14)(3)2h

20 = (3.14)(9)h

20 = 28.26h

20/28.26 = h

R when v = 100 and h = 5

100 = (3.14)r2(5)

100/5 = 3.14r2

20 = 3.14r2

20/3.14 = r2

6.36 = r2

Square root on both sides

2.52 = r

You might be interested in
H(n) - 4n - 4; Find h(0)
9966 [12]
4h hi fing h0 9 p h)n 0
6 0
3 years ago
NEED HELP FAST WILL GIVE BRAINLIEST
Olin [163]
The answer is A, as I calculated the difference using Pythagora's Theorem. Which I then did 7.6-6.3= 1.29122, which rounds to 1.0 cm^2
7 0
3 years ago
Read 2 more answers
Re write the statement 19+7 divided by 2-5 by including one pair of brackets to make the total equal to 8
Oksanka [162]

Answer:

The solution is given below:

Step-by-step explanation:

The computation is shown below:

= 19 +  7 divided by 2 - 5

= (19 + 7) ÷ (2) - 5

= 26 ÷ 2 - 5

= 13 - 5

= 8

Hence, after solving this the value would be 8

Therefore it is equal to the 8

Hence, the given statement is true

6 0
3 years ago
Someone please help me I’ll give out brainliest please dont answer if you don’t know
Andru [333]

Answer:

subtract 7 from both sides

2x < 7- 7

subtract 7 from 7 to get 0

2x < 0

product of two numbers is < 0 if one is > 0 and the other is < 0. since 2> 0, must be < 0.

x < 0

5 0
3 years ago
Enter an algebraic expression that represents the sum of fifty-seven and x cubed.
tresset_1 [31]
Jdnsjaiajiajsiiaiaia ajjakskskks
8 0
3 years ago
Other questions:
  • What is, 2.3 + (8.4 + 6.4) = 17.1 in word form?
    7·1 answer
  • Planet X has a mass of 8.46 x 1022 kg. Planet Y has a mass of 5,028,000,000,000,000,000,000,000 kilograms. How many times the ma
    6·1 answer
  • How can you find the least common denominator for 1/8 and 2/9
    7·1 answer
  • 6th grade math If Bob has 14,023 memes and each meme gains a profit of $3 how much money will Bob get if he posts all his memes?
    11·2 answers
  • The vertex angle of an isosceles triangle measures 42°. A base angle in the triangle has a measure given by
    15·1 answer
  • A reflection of shape I across the y-axis, followed by a ( )
    15·2 answers
  • What is an equation that equal 1/5
    6·1 answer
  • Help please! or else
    9·1 answer
  • I need help with this question pls
    15·1 answer
  • Whats 5 plus 6, i cant find out, its hard
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!