Answer:
x=2
Step-by-step explanation:
Add all the sides to find the perimeter
x+4 + 4x+10(x-1) = 24
Distribute
x+4+4x +10x-10 = 24
Combine like terms
15x -6 = 24
Add 6 to each side
15x-6+6 = 24+6
15x = 30
Divide each side by 15
15x/15 = 30/15
x = 2
Answer:
Please see the attached pictures for full solution.
A line perpendicular to the given line would have an opposite signed reciprocal slope. Since the slope of the given line is -1, then the perpendicular lines slope is 1.
Find b using y = mx + b or y - mx = b
-2 - 1(-2) = b
0 = b
The answer is y = x + 0 or y = x
It’s 80 marbles for 4.99 anyway that rounds to $5.36
Answer:
39 cm
Step-by-step explanation:
The perimeter of a rectangle is given as 2 (w + l) or 2w + 2l, where w and l are the sides.
Let us use <em>w</em> as 3 cm.
The perimeter of the rectangle is 2(3) + 2l = 6 + 2l
6 + 2l = 84 cm
We move the 6 to the left hand side and it goes from positive to negative.
2l = 84 - 6cm
2l = 78 cm
Divide both sides by 2.
l = 39 cm
There you have the answer for side <em>l</em>.
Hope this helps.
