Answer:
x
Step-by-step explanation:
So you start by putting the like terms together which will be
9x-3x=6x
You then open the brackets at the other part of the question
3 x 2x+3 x 4=6x+12
The question now becomes
6x +12=6x+12
Take 12 to the other side and minus.You will be left with
6x=6x
Simplify and your left with x which is your answer
Answer: 4 /15
Step-by-step explanation:
Answer:
x = -3
Step-by-step explanation:
-4x + 2(5x - 6) = -3x - 39
-<u>4x</u> + <u>10x</u> - 12 = -3x - 39
-4x + 10x = 6x
6x - 12 = -3x - 39
<u>+3x</u><u> _ </u><u>+3x </u>
9x - 12 = -39
<u> </u><u>+ 12</u><u> </u><u>+12</u>
<u></u>
x = -3
-30 = -30
Answer:
360 for first place and 240 for second
Step-by-step explanation:
Let's say f is the first place prize, and s is the second prize.
Amaal: 4f + 2s = 1920
Brian: f + 3s = 1080
Now we can isolate and substitute.
f = 1080 - 3s
4(1080 - 3s) + 2s = 1920
4320 - 12s + 2s = 1920
10s = 4320 - 1920
10s = 2400
s = 240
f = 1080 - 3*240
= 1080 - 720
= 360
First of all, let's remember the formula for calculating area. <em><u>Length times width equals area.</u></em> (lxw=a)
Now that we have the formula. Let's take the length (8 cm) and the width (6 cm) and add 1 cm to each of them.
Length: 8+1=9.
Width: 6+1=7.
Now, let's apply the formula for area.
9 x 7 = 63
Now that we've found the area is 63 cm, let's find the perimeter. To find the perimeter of a rectangle, we must multiply the length by 2 and the width by 2, then we add the two numbers. In this case, here's what we'll do:
9 x 2 = 18
7 x 2 = 14
18 + 14 = 32
Now we have the area and perimeter.
Final answer(s):
Area = 63 cm.
Perimeter = 32 cm.
Hope this explanation helped you out. :)