Answer:
6 + 12² = x
There's not an explanation for this-
Your answer would be
70a + 21b
I am not too sure whether there were options, but one way to approach this is to fill it with "multiplication" and "addition" - the distributive property combines addition and multiplication to make multiplying whole numbers simpler.
The gain is that you don't have to make one difficult multiplication, but a couple of simpler ones and then you can add them up.
Answer:
<u>x = 5</u>
Step-by-step explanation:
Equating the terms :
Add 2 on both sides :
- x + 3 + 2 = 2x - 2 + 2
- x + 5 = 2x
Subtract x from both sides :
- x + 5 - x = 2x - x
- <u>x = 5</u>
Answer:
3.9 in^2
Step-by-step explanation:
Split it up into a top rectangle and a bottom rectangle. Find the area of the top rectangle and subtract the combined area of the two quarter circles.
The area of the rectangle is 6 * 3 = 18. The area of the two quarter circles is the same as the area of one semicircle, and since the radius is 3 you can do:
3^2 * pi / 2 = 9pi/2. As a decimal this would be: 14.14.
Then, you can do rectangle - circle = 18 - 14.14 = 3.86. Rounded to the nearest tenth, this is 3.9