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HACTEHA [7]
2 years ago
14

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}

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<img src="https://tex.z-dn.net/?f=%20-%2030%20%3D%202%28x%20-%2097%29" id="TexFormula1" title=" - 30 = 2(x - 97)" alt=" - 30 = 2
Korolek [52]
Hey there! 

In order to find out the answer to this question, we can distribute 

-30 = 2(x - 97) \\ \\ \\ 2(x) = 2x \\ \\ 2(97) = 197

Flip your problem around! 

2x - 194 = -30

Add by 194 on each of your sides 

Like:  2x - 194 + 194 \\ \\ \\ -30 + 194

Cancel out: -194 + 194  because they would give you the outcome of 0

Keep: -30 + 194 [/tex] because that'll give you: [tex]164

Your problem becomes: 2x = 164

Now, we have to divide by 2 on each of the sides

Like: \frac{2x}{2}  =  \frac{164}{2}

Cancel: \frac{2x}{2} because it will give you a outcome of 1

Keep: \frac{164}{2} because this will give you your answer

Answer: x = 82

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)
7 0
3 years ago
Janet is 48 in tall and Lucy her younger sister is 32 in tall at 2:30 in the afternoon Lucy's Shadow extends 34 in how far does
Elis [28]
Janet is 50inches tall.
5 0
3 years ago
What is an explicit equation?
artcher [175]
An explicit equation is an equation used to find a term in a sequence without using the any previous terms. For example, if I have the set of numbers 1, 3, 5, 7, 9, my explicit equation is F(n)=2(n-1)+1. If I plug 1 in for n, I get F(1)= 2(0)+1, which is 1, my first term.

Hope this made sense.
4 0
3 years ago
Which is equivalent to the expression 4( +5) +4x +8
Ann [662]

Answer: 13+16x

Step-by-step explanation:

Okay so I just learned how to do that haha, so if the answer is wrongdoing I'm a sorry.

I added the 8 and five, then multiplyed the 4 and the 4 then added the x on the end.

8 0
3 years ago
. Determine whether the solids<br>are similar.<br>​
amid [387]
Yes
right circular cones are similar if they have equal vertex angles
6 0
3 years ago
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