Answer:
10√30
Step-by-step explanation:
√5*√12*√50
√12=2√3
√50=5√2
2*5√5*√3*√2
10√5*√3*√2
10√5*3*2
10√30
- 5 1/4 <span>÷ 2 3/4 =
= - 21/4 </span><span>÷ 11/4
= - 21/4 * 4/11
= - 21/11
= - 1 10/11
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Answer:
6.5 i think im not smart
Step-by-step explanation:
1: (-1,-1) is (x, y) to see if it is a solution, you would just plug in x and y and see if the equation is true.
-4 (-1) + 2(-1) = 2
4 + -2 = 2
2 = 2 CORRECT
So... plug in x and y in the second equation to Make sure it works for that one too.
-1 + -1 = -2
-2 = -2 CORRECT
So, yes. (-1,-1) is a solution to both equations.
Answer:
3rd one is no. the others are all yes
