Answer:
k=21
Step-by-step explanation:
Find the slope of MN which is 1/5 (use the slope formula)
Use the slope formula for AB using k as y_2
Substitute and you get k=21
21-2.25/-2.25-1.5=-5
The lines are perpendicular because the slopes are the negative reciprocal of one another.
Step-by-step explanation:
There are 48.7 cups in total
2/18 of 48.7 cups is needed for volcano
Total amount needed for experiments are :
2/18 of 48.7 = 97.4/18 = 5.411 cups
<span>5x - y = 15 (1)
-10x+2y=-30 (2)
multiply (1) by 2
10x - 2y = 30
</span>-10x + 2y = -30 (2)
<span>---------------------------add
0 = 0
answer
</span><span>infinitely many solutions</span><span>
</span>
Answer:
2h + 15
Step-by-step explanation:
-4h + 22 + 6h -7
2h + 22 - 7
2h + 15
Just remove the parenthesis since you are adding them and combine like terms
x+5+2x+3
3x+8
