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Travka [436]
3 years ago
7

I need help. Find the values of a b and c. Note diagram (attached) is not to scale.

Mathematics
1 answer:
shusha [124]3 years ago
7 0
Please read the attached file

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If a line crosses though (5,-3) and (-1,6);what is the y-intercept?
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(5,-3) (-1,6)
y=mx+b

calculate m:
(-3-6)/(5-(-1)
=-9/6=-1.5

y=-1.5x+b

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-3=-1.5*5+b
-3=-7.5+b
4.5=b

b=the y intercept, so the line intercepts x=0 at y=4.5
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3 years ago
The age of father is 4nyears.If the age of his daughter is(2n-9)years.find their total age.​
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Answer:

4n+(2n-9)

4n+2n-9

6n-9 =the total age

6n=9

divide by 6 both sides.

n=9/6

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substitute the value of n in the age of the father and the daughter.

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4 0
3 years ago
Sphere and a cylinder have the same radius and height. The volume of the cylinder is 64 meters cubed.
Mrrafil [7]

Answer:

C. 128/3 meters cubed

Step-by-step explanation:

The volume of a cylinder is denoted by: V=\pi r^2h, where r is the radius and h is the height. We know it's equal to 64, so we can set that equal to V:

V=\pi r^2h

64=\pi r^2h

We know that the sphere and cylinder have the same height and radius. However, the "height" of a sphere is actually the same as its diameter, which is twice its radius. Then, we can replace h in the above equation with 2r:

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64=\pi r^2*2r=2\pi r^3

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Now, the volume of a sphere is denoted by: V=\frac{4}{3} \pi r^3, where r is the radius. From above, we know that \pi r^3=32, so we can plug this into the equation:

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V=\frac{4}{3} *32=128/3

Thus, the answer is C.

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3 years ago
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Vikki [24]

16.6 repeating it the answer

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