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leva [86]
3 years ago
11

I don't understand how to do this. please help. ​

Mathematics
2 answers:
Darina [25.2K]3 years ago
6 0

Answer:

use the formula to find area, then multiply by the leingth, so 18 in your case. Also, the formula for area is A=(pi)r squared

Step-by-step explanation:

hope this helps

ira [324]3 years ago
5 0

Answer:

B. 3,052.08

Step-by-step explanation:

Radius:

r=d/2

r=18/2

r=9

Volume of Sphere:

V=(4/3)πr^{3}

V=(4/3)(3.14)9^{3}

V=(4/3)(3.14)729

V=(4/3)2289.06

V=3052.08

If this helped you, pleas consider giving a good rating, a thanks, and brainliest! Thanks!

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What is the value of the following expression? <br> 7+18/(6-3)
daser333 [38]
7+18/(6-3)
7+18/3
25/3=8.333
5 0
3 years ago
Tammy conducted a survey to find the favorite subject of the students at her school. She asked 25 students from her math class w
almond37 [142]
Tammy's sample may not be considered valid because, on the first hand, it is said that she only asked students from her " Math Class". 
If she wants to have a survey to find out the favorite subject of the students at her school, she must conduct a survey involving all the students in her school, not just in her class. What she did is just subjective. She should use a tally listing the different subjects and compare the number of students per subject. This way, she can have an objective representation of the least liked subjects and the most liked subjects of the students on her school.
Illustrating her survey through statistics may be more reliable and valid because it shows frequencies in which she can calculate easily and accurately the percentage of  the number of students per subject, in a more objective manner.
7 0
3 years ago
Help me please, i need to turn this in quick and im struggling.
erik [133]

Answer:

3) 0.75

5)96 pens

Step-by-step explanation:

3) 5 percent *15 =

( 5:100)*15 =

( 5*15):100 =

75:100 = 0.75

5) 48/4= 12

12*8=96

8 0
3 years ago
**PLEASE HELP**
zepelin [54]
----------------------------------------------------------
Given information
----------------------------------------------------------
Area = 3x² + 14x + 8 
Length = x + 4

----------------------------------------------------------
Formula
----------------------------------------------------------
Area = Length x Width

----------------------------------------------------------
Find Width
----------------------------------------------------------
3x² + 14x + 8  = (x + 4) x width
width = (3x² + 14x + 8) ÷ (x + 4)
width =  (x+4)(3x+2) ÷ (x + 4)
width = 3x + 2

----------------------------------------------------------
Answer: The width is 3x + 2 (Answer C)
----------------------------------------------------------
5 0
3 years ago
A = 1/2bh, where A is the surface area and b is the base, and H is the height.
elena55 [62]
When height turns to 3 times height or 3h

we can replace h with 3h and see what happens

A=1/2b(3h)
A=3/2bh
A=3(1/2bh)
well, the area is trippled
4 0
3 years ago
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