"The number 39 is equal to"
39=
"thirteen subtracted from an unknown number"
r-13
Putting it together you have:
39=r-13
6x+8x+40=180
14x = 140
x = 10
7y + 3y - 10 = 180
10y = 190
y = 19
Answer:
5
Step-by-step explanation:
The mean is the average so add up all values of the data points and divide by the amount of data points.
Lets take a look at the options first.
option 1 and option 4 are not possible as (8x) (8x) would give us 64x^2, which is not what we want.
we’re left with option 2 & 3. when expanded, option 2 will look like :
16x^2 - 40x - 10x + 25
= 16x^2 - 50x + 25
however, we do not want the 50x. so the answer is option 3, (4x-5) (4x+5)
if you don’t want to find the answer using expanding, there is also another method of expanding.
(a+b)^2 = a^2 - b^2
in this case, 16x^2 will be a^2 and 25 will be b^2. not sure whether you’ve learn this but yea.
Answer:
56 yd²
Step-by-step explanation:
You cut up the figure into 2 distinctive rectangles where it looks like one small rectangle is intersecting a larger one.
So you would do
4(4 + 4 + 4) = 4(12) = 48 yd²
2(4) = 8 yd²
Add
8 + 48 = 56
56 yd²
Hope this helps! :)
