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3 years ago

Suppose the height of the pyramid is 20 yards. What is the pyramid's volume?

Mathematics

1 answer:

sp2606 [1]3 years ago

3 0

B would be the correct answer if right mark me Brainly

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Which expression is equivalent to (–3y – x) – (5y – 8x)?

olga55 [171]

Answer:

$7x-8y$

Step-by-step explanation:

We have been given an expression $(-3y-x)-(5y-8x)$ . We are supposed to simplify our given expression.

Using distributive property $a(b+c)=ab+ac$ , we will get:

$-3y-x-1*5y-1*-8x$

$-3y-x-5y+8x$

Now, let us combine like terms.

$-x+8x-5y-3y$

$7x-8y$

Therefore, the simplified form of our given expression would be $7x-8y$ .

6 0

3 years ago

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A chorus director surveys students about singing and reading music. The results of the survey are shown in the relative frequenc

Alika [10]

True
True
True I think but not sure

6 0

3 years ago

1+10=10 2+20 =20 3+30=28 4+40=32 5+50=28 6+60=?

aniked [119]

Hey! Your answer is here!

The answer to the problem is 10.

Hope this helps! :)

6 0

3 years ago

1-i need to mix 25% mineral spirits to the varnish i am using what ratio of spirit to varnish am i using? 2-if i use 240 ml of v

zhenek [66]

Answer:

(1) The required ratio of spirit to varnish is 1:3.

(2) You need 80 ml of mineral spirit.

(3) The ratio of tapestries' heights to width is 3:2.

Step-by-step explanation:

(1) If you need to mix 25% mineral spirit to the varnish, then the solution would contain 25% mineral spirit and 75% varnish.

So, $\frac{spirit}{varnish}=\frac{25}{75}$

$=\frac{1}{3}$

Thus, The required ratio of spirit to varnish is 1:3.

(2) If you use 240ml of varnish, then this quantity is 75% of the total solution or ration of varnish to the total solution will be 3:4.

Let $x$ be the quantity of total solution.

Then, $240:x=3:4$ .

⇒ $\frac{240}{x}=\frac{3}{4}$

⇒ $3x=240*4$

⇒ $x=\frac{240*4}{3}$

⇒ $x=320$

That is, total solution is 320 ml.

Now, Spirit = Total solution - Varnish

⇒Spirit = 320ml-240ml

⇒Spirit = 80ml

Hence, if you use 240 ml of varnish, you need 80 ml of mineral spirit.

(3) Robison's tapestries all measure 1.5m long and 1m wide. First, we express dimensions in whole numbers by multiplying them by 10.

Then, dimensions are 15m long and 10m wide.

Now, Height : Width = 15:10

⇒ $\frac{Height}{Width} =\frac{15}{10}$

⇒ $\frac{Height}{Width} =\frac{3}{2}$

Hence, the ratio of tapestries' heights to width is 3:2.

8 0

3 years ago

Find the y-intercept of the line on the graph. Enter the correct answer.

klio [65]

Answer:

y-intercept = -1

Step-by-step explanation:

7 0

3 years ago

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