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saveliy_v [14]
2 years ago
10

The student government wants to determine the theme for the eighth grade dance. Which group would it be best to take a sample fr

om?
Mathematics
2 answers:
Serga [27]2 years ago
7 0
To ask the 8th graders
Juliette [100K]2 years ago
5 0
The best group to take a sample from would be the eighth graders because they are the ones who will be participating in the dance, so they should have the most input.
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Which shows the correct solution of the equation<br> 1/2 a + 2/3b = 50 when b=30
Lelu [443]
1/2a + 2/3(30)= 50
1/2a + 20 = 50
1/2a= 50-20
1/2a= 30
A= 30(2)
A= 60

The solution is 60.

Hope this helps!
4 0
2 years ago
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An astronomer wishes to measure on a photograph the distance between the image of a certain star and three other star images nea
Alexeev081 [22]
8 C 3 = 8! / (3!(8 - 3)!) = 8! / (3! * 5!) = (8 * 7 * 6 * 5!) / (3! * 5!) = (8 * 7 * 6) / (6) = 56 

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2 years ago
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Solve for z a(t+z)=45z+67
ladessa [460]
Solve for z a(t+z)=45z+67
1. Expand
at+az=45z+67

2. Subtract at from both sides
az=45z+67-at

3. Subtract 45z from both sides
az-45z=67-at

4. Factor out the common term z
z(a-45)=67-at

5. Divide both sides by a - 45
z= \frac{67-at}{ya-45}

Answer: 
z= \frac{67-at}{a-45}
6 0
2 years ago
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I will give brainliest to the best answer to this question: Each year, the Department of Water Works measures the chloride conce
Maslowich

Answer:

The total change that will likely occur in 2 years is =-3\frac{2}{3} mg/L        

Step-by-step explanation:

Given : The first year, they found the chloride concentration changed by -1\frac{3}{5} mg/L .

It is estimated that the chloride concentration will change -2\frac{1}{15} mg/L the next year.

To find : What is the total change that will likely occur in 2 years?

Solution :

The chloride concentration changed by -1\frac{3}{5}=-\farc{8}{5} mg/L in first year.

The chloride concentration will change -2\frac{1}{15}=-\frac{31}{15} mg/L the next year.

The total change that will likely occur in 2 years is

=-\frac{8}{5}+(-\frac{31}{15})

=\frac{-24-31}{15}

=\frac{-55}{15}

=\frac{-11}{3}

In a mixed fraction - =-3\frac{2}{3} mg/L        

4 0
2 years ago
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A standard size bass drum has a diameter of 22 inches and is 18 inches deep. find the volume of the drum
lina2011 [118]
I hope this helps you

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