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3 years ago

Which relationships have the same constant of proportionality between y and x as in the equation y=1/3x?

Mathematics

1 answer:

Marina CMI [18]3 years ago

4 0

Y and X is urgent answer

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Which of the following formulas could be used to find the area, A, of a triangle with base b and height h?

kykrilka [37]

I hope this helps you

A=Area

b=base

h=height

A=b×h/2

A=1/2.b+1/2.h

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2 years ago

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Determine the value for which the rational expression 5x/6x

KiRa [710]

Step-by-step explanation:

5x/6x
(5/6)×(x/x)

Here, x cancels each others

5/6
0.833

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2 years ago

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Solve the equation that finds the number of pennies he will pay you after the 9th dog grooming job

iVinArrow [24]

Answer:

Step-by-step explanation:

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3 years ago

Find the volume and surface area of the composite figure. Give your answer in terms of π.

irakobra [83]

Answer:

V = 240π cm^3 , S= 168π cm^2

Step-by-step explanation:

The given figure is a combination of hemi-sphere and a cone

<u>Volume:</u>

For volume

r = 6 cm

h = 8 cm

$Volume\ of\ cone = \frac{1}{3}\pi r^2h\\= \frac{1}{3}\pi (6)^2*8\\=\frac{1}{3}\pi *36*8\\=\frac{288}{3}\pi\\=96\pi cm^3 \\\\Volume\ of\ hemisphere = \frac{2}{3}\pi r^3\\=\frac{2}{3}*\pi * (6)^3\\=\frac{2}{3}*\pi *216\\=\frac{432}{3}\\=144\pi cm^3 \\\\Total\ Volume= Volume\ of\ cone + Volume\ of\ hemisphere\\= 96\pi +144\pi \\=240\pi cm^3$

<u>Surface Area:</u>

For this particular figure we have to consider the lateral area of the cone shape and surface area of the hemisphere

We have to find the lateral height

$l = \sqrt{r^2+h^2}\\ l = \sqrt{(6)^2+(8)^2} \\l= \sqrt{36+64}\\ l = \sqrt{100}\\l = 10cm\\\\Surface\ area\ of\ cone = \pi rl\\= \pi (6)(10)\\=\pi *60\\=60 \pi\ cm^2\\\\Surface\ area\ of\ hemisphere = 2\pi r^2\\= 2 \pi * (6)\\= 2 \pi *36\\= 72 \pi\ cm^2\\\\Total\ surface\ Area = Surface\ area\ of\ cone + Surface\ area\ of \ hemisphere\\= 60 \pi + 72 \pi\\=132 \pi\ cm^2$

Hence the first option is correct ..

3 0

2 years ago

A 19% discount on a watch saved a shopper $76 . find the price of the watch before the discount

Alik [6]

The watch costed $400 before the discount.

76 * 100 = 7,600
7,600 / 19 = 400

3 0

2 years ago