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4 years ago

9

Draw a model, and write an equation to represent”4times as many as 3is 12” explain your work

1 answer:

Amiraneli [1.4K]4 years ago

7 0

Answer:

Step-by-step explanation:

4 times 3 T equal 12T

TTT TTT TTT TTT

1 2 3 4

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Find the area of a cell phone screen with an 8 inch diagonal that has an aspect ratio of 2:3.

12345 [234]

If the sides were 2 and 3 then using Pythagoras the diagonal would be sr(2^2 + 3^2) = sr(13)

The actual diagonal is 8 inches so the sides need to be scaled by 8/sr(13)

The screen area will be 2 x 8/sr(13) x 3 x 8/sr(13) = 29.539....
Rounded to nearest sq.inch this is 30 sq.inch

7 0

3 years ago

Find the volume of the sphere.<br> Either enter an exact answer in terms of pi or use 3.14 for pi

Ratling [72]

Answer:

volume of sphere= 4/3πr³

<u>4</u>×<u>2</u><u>2</u>×10×10×10

3. 7

<u>88×1000</u>

21

<u>88000</u>

21

4190.48

6 0

3 years ago

What’s the answer???

victus00 [196]

Answer:

= 5i $\sqrt{2}$

Step-by-step explanation:

$\sqrt{-50}$

$\sqrt{-25 * 2}$

5i $\sqrt{2}$

5 0

3 years ago

This is for literal equations <br> A=4 πr2 (r2)<br><br> i think you solve for r2

Sedaia [141]

Answer:

$r^2=\dfrac{A}{4\pi}$

Step-by-step explanation:

The given equation is A=4 πr².

We need to solve the above equation for r².

We have,

A=4πr²

Dividing both sides by 4π, we get :

$\dfrac{A}{4\pi}=\dfrac{4\pi r^2}{4\pi}\\\\r^2=\dfrac{A}{4\pi}$

Hence, the value of r² is equal to $\dfrac{A}{4\pi}$ .

3 0

3 years ago

What is the HCF of 1280 and 630

tatuchka [14]

Given:

The two numbers are 1280 and 630.

To find:

The HCF of the given numbers.

Solution:

First write the given numbers in prime factorization form.

$1280=2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 5$

$630=2\cdot 3\cdot 3\cdot 5\cdot 7$

Now the product of all the common prime factors is known as the HCF of 1280 and 630.

$HCF=2\cdot 5$

$HCF=10$

Therefore, the HCF of 1280 and 630 is 10.

4 0

3 years ago