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Schach [20]
3 years ago
15

If 3x−y=12, what is the value of 8x/2y?

Mathematics
1 answer:
patriot [66]3 years ago
4 0

Answer:

17.2

Step-by-step explanation:

3x=12+y

x=12+y/3

8(  \frac{12 + y}{3}) \div 2y

\frac{96 + 8y}{3} \times  \frac{1}{2y}

\frac{96 + 8y}{6y}

(y is divided by y so it no longer exists)

\frac{96 + 8}{6}

\frac{104}{6}

17.2

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Mary wants to fill in a cylinder vase. At the flower store they told her that the vase should be filled 3/4 for the flowers to
Alex Ar [27]

Answer:

About 376.99 cubic inches

Step-by-step explanation:

Cylinder has a volume of:

V=\pi r^2h

Where

V is the volume

r is the radius

h is the height

We need to find the volume of the cylinder, then multiply that answer by 3/4 to get the solution to this problem. First, the full volume of the cylinder.

Given

r = 4

h = 10

So,

V=\pi r^2h\\V=\pi (4)^2 (10)\\V=502.65

Now, we multiply by 3/4:

502.65*\frac{3}{4}=376.99

Mary should be vase to 376.99 cubic inches

4 0
3 years ago
Solve using foil method (x+9)(x+9)
Fudgin [204]
X^2+9x+9x+81
x^2+18x+81
for factoring it
3 0
3 years ago
Which shows all the names that apply to the figure?
saul85 [17]
The answer is A


A Parallelogram is a shape with 4 sides that has two pairs of parallel sides. The opposite sides must have equal length.  This is accurate for this shape.

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4 0
2 years ago
Find the width of a rectangular prism if the volume is 546cm, the height is 7cm and the length is 13cm.
Margaret [11]

7x w x 13=546

(7x13)*w= 546

91w=546

91w/91= 546/91

w= 6

the width is 6cm

7 0
3 years ago
I need help. Can you help me ?
natita [175]
The value of X would be 3.6 because if you divide the 4 by 2 to get the half triangle you now know the base and height for the triangle. Now you have to use tangent -1 to figure out the bottom right angle which is 56.3 degrees. Once you have the angle you can use Sin to figure out the missing side.
5 0
3 years ago
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