Answer:
a = 6
Step-by-step explanation:
Hello!
Solve:
- 4(3a - 4) = 56
- 3a - 4 = 14 (factoring out 4)
- 3a = 18 (adding 4 to both sides)
- a = 6 (dividing by 3)
Another way:
- 4(3a - 4) = 56
- 12a - 16 = 56 (distributive property)
- 12a = 72 (moving like terms)
- a = 6 (dividing by 12)
Distributive Property of Multiplication:
The process of distributing the outside factor to the terms in the parenthesis.
Example:
![4(3a - 4)\\\\4(3a) - 4(4)\\\\12a - 16](https://tex.z-dn.net/?f=4%283a%20-%204%29%5C%5C%5C%5C4%283a%29%20-%204%284%29%5C%5C%5C%5C12a%20-%2016)
Answer:
Katie’s brother is now 31 years old
Step-by-step explanation:
You would add 4 to 27
Answer:There are two right triangles. You need to find the opposite side (the height) of each of them. The difference between the two is the height of the blade, x.
You know the adjacent, 440, and you are looking for the opposite, so you need to use tan for both.
tan (30) = y / 440
y = 440 * tan (30) = 254.034...
tan (38.8) = z / 440
y = 440 * tan (38.8) = 353.769.--
353.8 - 254.0 = 99.8 = 100 feet.
Step-by-step explanation:
Answer:
x = 130˚
Step-by-step explanation:
x + 100˚ = 360˚
2 x = 360˚ - 100˚
2 x = 260˚
260˚ ÷ 2 = 130˚