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Anvisha [2.4K]
3 years ago
13

PLEASE DO IT WITH STEPS FAST BEFORE 5:00

Mathematics
1 answer:
Naily [24]3 years ago
4 0

\frac{5}{2} =\frac{6}{x} \\5x=12\\x=2.4HOW TO SOLVE PROPORTIONS:

CROSS-MULTIPLY.

Please mark Brainliest!

\frac{5}{2} = \frac{2}{x}\\5x=4\\x=0.8

\frac{21}{27} =\frac{x}{18} \\27x=378\\x=14\\

\frac{h} {108} =\frac{7}{18}

18h=756

h=42

\frac{45}{792} = \frac{70}{w}

45w=55,440

w=1,232

  \frac{4}{9} =\frac{10}{x}\\4x=90\\x=22.5

I hope it helps!

*AmbitiousChild*

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mrs_skeptik [129]
18 mins it is ! I think your missing the question tho
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Solve the equation by completing the square. Round to the nearest hundreth if necessary. x^2-x-7=0
gregori [183]
X^2 - x  = 7
(x - 0.5)^2 - 0.25 = 7
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(x - 0.5)  = +/- sqrt 7.25
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solution set is {-2.19, 3.19,}
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A cube has a side length of x inches. What expression represents the total volume, in cubic inches, of the cube?
Pie

Answer:

Volume = x^3 cubic inches

Step-by-step explanation:

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We know,

Volume = area of base * height

THe base is a square and the area is side * side. We know each side is x, so we have:

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Now, we know height is also same side length, x, thus the volume becomes:

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We add the exponents when we have same base multiplied, so the expression for volume becomes:

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8 0
3 years ago
Find the area of the figure
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Step-by-step explanation:

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Kevin and Randi have a jar containing 63 coins , being either quarters or nickels . they total
Softa [21]
Yess, such fun so

q=number of quarter
n=number of nickles
q+n=63

9.15=915 cents
25 cents=1 q
5 cents=1 n so

915=25q+5n
915=5(5q+n)
divide by 5
183=5q+n

we also have q+n=63
subtract q from both sides
n=63-q
subsitute 63-q for n in second equation
183=5q+63-q
add like terms
183=4q+63
subtract 63 from both sides
120=4q
divdie by 4
30=q
there were 30 quarters
subsitute
63=30+n
subtract 30
33=n


30 quarters
33 nicles

8 0
3 years ago
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