1.89871747424 heres the answer
Answer:
B. a = 5
Step-by-step explanation:
3(a - 4) + 1 = 9 - a
Distribute the 3 into the parenthesis.
3a - 12 + 1 = 9 - a
Add -12 and 1.
3a - 11 = 9 - a
Add a to both sides.
4a - 11 = 9
Add 11 to both sides.
4a = 20
Divide both sides by 4.
a = 5.
Proof:
3(a - 4) + 1 = 9 - a
Substitute variable.
3(5 - 4) + 1 = 9 - 5
Subtract inside parenthesis.
3(1) + 1 = 9 - 5
Multiply 3 and 1.
3 + 1 = 9 - 5
Add 3 and 1.
4 = 9 - 5
Subtract 5 from 9.
4 = 4.
Answer:
F(x) + 4 = 3x + 3
Step-by-step explanation:
F(x) = 3x - 1 |add 4 to both sides
F(x) + 4 = 3x + 3
There are 8 ounces in 1 cup, so that means 40 ounces in 5 cups.
Answer:
b 4 sqrt(2) cm
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2, where a and b are the legs
x^2 + x^2 = 8^2
2x^2 = 62
Divide each side by 2
2x^2/2 = 64/2
x^2 =32
Take the square root of each side
sqrt(x^2) = sqrt(32)
x = sqrt(16*2)
We know that sqrt(a*b)= sqrt(a) sqrt(b)
x = sqrt(16) sqrt(2)
x = 4sqrt(2)
