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saw5 [17]
2 years ago
12

There are 420 students at Virginia Middle School. For every 7 students, 4 of them are girls. How many girls are there at Virgini

a Middle School?
Mathematics
2 answers:
Studentka2010 [4]2 years ago
8 0

Answer:60

Step-by-step explanation:

MArishka [77]2 years ago
5 0
60 girls that was too easy
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The radius of a circular rug is 4 feet. How much ribbing will you need to buy to go around the rug? Use 3 14.
alexira [117]

Answer:

100.48 feet

Step-by-step explanation:

The circumfrence of a circle is represented in the equation C=2\pi r^{2}

So we input the values into the equation C=2(3.14)(4)^2 which when entered into a calculator gives you 100.48feet

5 0
3 years ago
Your test scores for the semester are 87,84 and 85.Can you raise your test average to 90 with you next test?
Rainbow [258]

Answer:

Yes

Step-by-step explanation:

If you add 87.84, 85, and 100 you get 272.84. Once you divide that by 3 you get 90.946, which would be your test average if you score 100 on your next test.

6 0
2 years ago
Find the volume of the given solid: Bounded by the cylinder y^2+z^2=4 and the planes x = 2y, x = 0, z = 0 in the first octant.
rodikova [14]

The solution would be like this for this specific problem:

<span>V = ∫ dV </span><span>
<span>= ∫0→2 ∫ 0→π/2 ∫ 0→ 2·r·sin(φ) [ r ] dzdφdr </span>
<span>= ∫0→2 ∫ 0→π/2 [ r·2·r·sin(φ) - r·0 ] dφdr </span>
<span>= ∫0→2 ∫ 0→π/2 [ 2·r²·sin(φ) ] dφdr </span>
<span>= ∫0→2 [ -2·r²·cos(π/2) + 2·r²·cos(0) ] dr </span>
<span>= ∫0→2 [ 2·r² ] dr </span>
<span>= (2/3)·2³ - (2/3)·0³ </span>
<span>= 16/3 </span></span>

So the volume of the given solid is 16/3. I am hoping that these answers have satisfied your query and it will be able to help you in your endeavors, and if you would like, feel free to ask another question.

3 0
3 years ago
Can someone help with 4 I beg you
kobusy [5.1K]

Answer:

-1/3,-2/4,-9/4, -1/2

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Write the equation of the parabola in vertex form. <br><br> Vertex (1,2) point (2,-4)
lozanna [386]

Answer:

f(x)=6(x-2)^2-4

Step-by-step explanation:

The equation in vertex form is

f(x)=a(x-2)^2 - 4

Substituting in the coordinates (1,2) to find a,

2=a(1-2)^2 - 4 \\ \\ 2=a-4 \\ \\ a=6 \\ \\ \therefore f(x)=6(x-2)^2-4

8 0
1 year ago
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