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joja [24]
4 years ago
7

A principal wants to know if students at a particular high school or in favor of a new dress code after school the principal is

not able to ask the opinion of every student at the school so she needs to select an appropriate sample of the students to represent the high school which sample students the principal should choose.
Mathematics
2 answers:
Yanka [14]4 years ago
5 0
Well behaved & advanced academic children for a great representation of the school.
skelet666 [1.2K]4 years ago
4 0

Answer:

jn j j

Step-by-step explanation:

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What is the volume of hemisphere with a radius of 8 ft rounded to the nearest tenth of cubic foot
patriot [66]

Answer:

1072.3ft^{3}

Step-by-step explanation:

A hemisphere is half of a sphere, so the volume V of the hemisphere is the volume of the sphere divided by 2.

V = (2/3)*\pir^{3}

   = (2/3)*\pi(8ft)^{3}

   = (2/3)*\pi*512ft^{3}

   = 1072.3ft^{3}

3 0
3 years ago
PLEASE HELP ME WITH THIS, ALGEBRA, I NEED HELP!
marta [7]
No clue but I gunna guess and say 2
6 0
3 years ago
4y square + y - 45 when y=-5
kobusy [5.1K]

Given:

The expression is

4y^2+y-45

To find:

The value of the given expression when y=-5.

Solution:

We have,

4y^2+y-45

Putting y=-5, we get

4(-5)^2+(-5)-45

=4(25)-5-45

=100-50

=50

Therefore, the value of the given expression is 50 when y=-5.

7 0
3 years ago
X + y = -1<br> X - y = 7
enyata [817]
1: Solve for either x or y in one of the equations. So x + y = -1 is y = -x -1
2: substitute the new equation in the opposite equation. So x - (-x - 1) = 7
3: distribute the negative. X + x + 1 = 7
4: combine like terms. 2x + 1 = 7
5: solve for x. Subtract 1 on both sides. 2x = 6
6: divide by 2 to get x by itself. X = 3
7: plug the new value of x into one of the ORIGINAL equations. 3 + y = -1
8: solve for y. Subtract 3 on both sides.
Y = -4
9: the solution is written as (x,y) so the solution would be (3, -4)
4 0
4 years ago
(3a)^ 3 = This expression without exponents is
katovenus [111]
If you need help on how to solve an equation go to math.way
They are able to help you solve this and show you have to work it out. 
5 0
3 years ago
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