X-3=3
2x+9y=11
x=6
2x+9y=11
2x6+9y=11
y= -1/9
Answer:
12
Step-by-step explanation:
Divide 10 and 5/6
It's 3, the third number, 6 would be the tenth place ect.
Answer:
129 square foot
Step-by-step explanation:
<u>Step 1: Convert height of the door to inches</u>
Height of the door = 10 feet 8 inches
1 feet = 12 inches
10 feet = y inches
<em>Cross Multiply</em>
y = 120 inches
Height of door in inches = 120 + 8 =128 inches
<u>Step 2: Find the surface area of one side of the door</u>
Surface area = length x width
length = 128 inches
width = 145 inches
Surface area = 128 x 145
Surface area = 18560 inches
<u>Step 3: Convert surface area from inches to square foot</u>
Surface area = 18560 inches
1 square foot = 144 inches
y = 18560 inches
<em>Cross multiply</em>
144y = 18560
y = 18560/144
y = 128.89 rounded off to 129 square foot.
Therefore, you should report 129 square foot surface area to the hardware store.
!!
First off, in 5(n-3), there would be a hidden multiplication symbol:
5(n-3)
=5 x (n-3)
We then need to multiply 5 by the numbers in the bracket seperately:
5×(n-3)
=5×n + 3×5
=5n + 15
Therefore the answer is C. 5n - 15.
Here's another example similar to the above case:
3(y-1)
=3 × (y-1)
=3 × y + (-1) × 3
=3y + -3
Hope it helps!