1)Which of these systems of linear equations has an infinite number of solutions?
1 answer:
1) <span>B)3x+6y=22
6x+12y=44
because the equations are equivalent to each other
2*(3x+6y=22) -----> 6x+12y=44
2) </span><span>5x+10y=15 should be multiplied by -2, to get 5x*(-2)=-10x, and x then can be eliminated
</span><span>A)-2</span>
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Pretty sure it’s 2 and 4. A unit rate is usually something to one 1. So 1 would be in the denominator.
The slope is 4/3.
I hope this helps :)
Answer:
second one is the answer
Step-by-step explanation:
Answer:
0.286
Hope that helps!
Step-by-step explanation:
Set up a ratio with height over shadow height:
40/30 = x/15
Cross multiply:
40 x 15 = 30x
600 = 30x
Divide both sides by 30:
X = 20
The tree is 20 feet tall.
