All categories

2 years ago

Which choice is equivalent to the expression √20 + √80

Mathematics

2 answers:

salantis [7]2 years ago

7 0

Answer:

13.41

Step-by-step explanation:

Hope it helps!

Korvikt [17]2 years ago

5 0

Answer:

6 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplifying the radicals

$\sqrt{20}$

= $\sqrt{4(5)}$

= $\sqrt{4}$ × $\sqrt{5}$ = 2 $\sqrt{5}$

$\sqrt{80}$

= $\sqrt{16(5)}$

= $\sqrt{16}$ × $\sqrt{5}$ = 4 $\sqrt{5}$

Then

$\sqrt{20}$ + $\sqrt{80}$

= 2 $\sqrt{5}$ + 4 $\sqrt{5}$

= 6 $\sqrt{5}$

You might be interested in

A doctor told his patient to drink 3 full cups and 1/2 of a cup of medicine over a week. If each full cup was 4 1/2 pints,how mu

fenix001 [56]

-3x4.5=13.5. 4.5x0.5=2.25

-13.50
+2.25
_____
15.75 pints

6 0

3 years ago

Which method will not work?

katen-ka-za [31]

D because if you multiply y 8 times it will no longer be doubling the area

6 0

2 years ago

Describe the following pattern in your own words and write three next terms:2;1;1\2;1\4

tangare [24]

Answer: Please mark me brainliest, it will really help me just as this answer really helps you.

Description: Divide by two

Next three terms: 1/8, 1/16, 1/32

Explanation:

How to get next term?

Divide the number before by two to get the next term.

How do you get the pattern?

I observed a pattern that each next number was divided by two.

5 0

1 year ago

Read 2 more answers

3x^2+20x+12 pls show work ;-;

RoseWind [281]

Answer:

$3 {x}^{2} + 20x + 12 \\ 3 {x}^{2} + 18x + 2x + 12 \\ 3x(x + 6) + 2(x + 6) \\( 3x + 2)(x + 6)$

5 0

2 years ago

How do you do this?! (2w-1)/(4)=(2-w)

nikklg [1K]

Answer:

w = 3 is your answer.

Step-by-step explanation:

You want to get w by itself.

(2w - 1)/(4) = 2 - w You will add the w on both sides.

(3w - 1)/(4) = 2 You will multiply 4 on both sides.

3w - 1 = 8 You will add 1 on both sides.

3w = 9 You will divide 3 on both sides.

w = 3 is your answer.

6 0

2 years ago