930,000,000 would be your answer
<span>6a^7-2a^7
=5a^7 ................combine like terms</span>
Answer:
Step-by-step explanation:
To be able to answer this question properly. I'll assume the length of the room is in meters.
So for the room, we have:
For the bed, we have:
First, we calculate the surface area of the room.
Convert all units to cm
Next, we calculate the area of the bed
The area of the space left is the difference between A1 and A2
Answer:
-2 =y
Step-by-step explanation:
We can find the slope of the first line
m = (y2-y1)/(x2-x1)
= (2-8)/(-1-6)
= -6/-7
=6/7
Perpendicular lines have negative reciprocal slopes, so flip the slope and negate it
The perpendicular slope is -7/6
-7/6 = (y2-y1)/(x2-x1)
Put in the points
-7/6 = (y-5)/(5--1)
-7/6 = (y-5)/(5+1)
-7/6 = (y-5)/6
The numerators must be equal since the denominators are equal
-7 = y-5
Add 5 to each side
-7+5 = y-5+5
-2 =y
Answer: #20, x = 3
#21, x = 1/2
Step-by-step explanation:
#20) x + 4 + x + 2+ x + 5 = x + 3 +x+3+x+1+x+1
3x + 11 = 4x + 8
<u>-3x -3x</u>
11= x + 8
<u> - 8 - 8</u>
3 = x
#21) 12x(5) = 6x + 9 + x + 10 + x + 7
60x =8x + 26
<u> -8x -8x</u>
52x = 26
divide both sides by 52
x = 1/2