# algebra

am I right?
sqrt 50
5 sqrt ^2***
2 sqrt ^5
5 sqrt ^10
5
2. Simplify the radical expression sqrt 56x^2
28x
2x sqrt 14***
2x sqrt 7
sqrt 14x2

sqrt 490y^5w^6
2 sqrt 135y^2
2y sqrt 135***
27 sqrt 15y^2
27y sqrt 15

sqrt15y multiplied by 3 sqrt 81y
2 sqrt 135y^2
2y sqrt 135***
27 sqrt 15y^2
27y sqrt 15

sqrt 20x^13y^5/5xy^7
sqrt 4x^12/y^2
2x^6/y
2 sqrt x^12/y^2
2x^6y***

sqrt 5+6 sqrt 5
5 sqrt 5
7 sqrt 10***
7 sqrt 5
5 sqrt 10

5 sqrt 7 + 3 sqrt 175
7 sqrt 182
15 sqrt 14
5 sqrt 175***
15 sqrt 7

(3+sqrt6)(3-sqrt6)
-27
3
9+6sqrt6
15+6sqrt6***

9. What is the domain function? y=sqrt3x+3
x<=-1
x>1
x>=-1***
x<1

10.Simplify the radical expression by rationalizing the denominator.
3 sqrt 160/sqrt 1350x***
2 sqrt 15x/15x
3 sqrt 160/1359x
4sqrt15x/15x
4/sqrt45x

1. 👍
2. 👎
3. 👁
1. #1 and #2 are correct

#3
√(490y^5w^6)
= √49√10 (y^2√y)(w^3)
= 7√10 y^2w^3 √y <--- not one of the choices

#4
(√(15y))(3√(81y))
= √15√y (27√y)
= 27y√15

#5 can't tell where the square root ends without brackets

#6
1 apple + 6 apples = 7apples
1dollar + 6 dollars = 7 dollars
1√5+ 6√5 = 7√5

#7
5 √7 + 3√175
= 5√7 + 3√25√7
= 5√7+15√7
= 20√7 <--- not one of the choices! but correct answer

#8
(3+sqrt6)(3-sqrt6)
difference of square pattern
= 9 - 6
= 3

#9
y=√3x+3
depends if brackets are needed

the way you typed it, domain is x ≥ 0
if you meant:
y = √(3x+3) , then 3x+3 ≥ 0 ----> x ≥ -1

#10
3√160/√(1350x) ,
= 12√10 / (√10√135√x)
= 12/√(135x) * √(135x)/√(135x)
= 12√(135x)/135x

3 sqrt 160/1359x would have been a correct expression if it had brackets such as:
3√(160/(1359x) ) , but then it would not have been rationalized.
None of the other choices are correct.

You got 2 right out of 10
guessing would have given you (1/4)(10) or 2.5 correct.
You did worse than just plain guessing.

Where did you get these questions??

1. 👍
2. 👎
2. I noticed I completely switched up choices of some answers due to the fact I had to write all these answers down and it my mind felt cluttered. thanks for the reply though, would you like if I were to rewrite them all or something?

1. 👍
2. 👎
3. actually nevermind I finished the questions rn my answers are correct thank you

1. 👍
2. 👎

1. 👍
2. 👎
5. @Mario, dude, how are you going to ask him what the answer is two years later? Like bruh.

1. 👍
2. 👎
6. @Mario 4 years at this point, I wonder where you are now...

1. 👍
2. 👎

## Similar Questions

1. ### algebra

Simplify: 2 sqrt (3) + 6 sqrt(2) - 4 sqrt(3) + sqrt (2) a) 8 sqrt(2) - 3 sqrt(3) b) 6 sqrt(2) - 8 sqrt(3) c) 5 sqrt(6) d) 7 sqrt(2) - 2 sqrt(3) the answer i picked was d

2. ### math;)

Find the unit vector in the direction of u=(-3,2). Write your answer as a linear combination of the standard unit vectors i and j. a. u=-3[sqrt(13)/13]i+2[sqrt(13)/13]j b. u=-3[sqrt(5)/5]i+2[sqrt(5)/5]j c.

Perform the indicated operations and simplify the result. Leave your answer in factored form. 1) x/16 - 1/x all over 1 + 4/x A) x+4/16 B) x-4/16 C) 16/x+4 D) 16/x-4 E) -16/x+4 I chose answer C. I saw this as x^2-16/ x+4. Multiply

4. ### algebra

Simplify: sqrt (21) (sqrt(7) + sqrt(3)) a) 7 sqrt (3) + 3 sqrt(7) b) 7 sqrt(3) + sqrt (3) c) sqrt (210) d) sqrt (147) + sqrt (63)''. a

1. ### algebra

what is the simplified form of 3 sqrt (5c) x sqrt (15c^3) choices are a. 15c^2 sqrt (3) b.6c^2 sqrt (5) c. 5c^2 sqrt(3) d. 12c^4 sqrt(5) please help i don't understand how to do the question i would really appreciate it

2. ### algebra

simplify the following radical expression : 4 sqrt (625) a) 25 b) sqrt (25) c) 5 d) no solution exists i think a

3. ### Math:)

A person is on the outer edge of a carousel with a radius of 20 feet that is rotating counterclockwise around a point that is centered at the origin. What is the exact value of the position of the rider after the carousel rotates

4. ### Algebra

Evaluate sqrt7x (sqrt x-7 sqrt7) Show your work. sqrt(7)*sqrt(x)-sqrt(7)*7*sqrt(7) sqrt(7*x)-7*sqrt(7*7) sqrt(7x)-7*sqrt(7^2) x*sqrt 7x-49*x ^^^ would this be my final answer?