Answer:
20
Step-by-step explanation:
This is a right triangle
a² + b² = c²
16² + 12² = x²
256 + 144 = x²
400 = x²
take the square root of both sides
x = 20
First off, remember PEMDAS. Then replace the variables with the values.
3(2x3)^2
First distribute the exponent to the value on the inside.
3(4x9)
Then multiply the 4 and 9.
3(36)
After that just distribute the 3.
3x36 = 108.
Answer:
4 tens + 5 tenths
Step-by-step explanation:
40+5\10= 40+1/2=40.5
3(y + 3) + 5y = 4(2y + 1) + 5
...multiply
3y + 9 + 5y = 8y + 4 + 5
...simplify
8y + 9 = 8y + 9
...the equation is true, so the answer is infinitely many solutions
Answer:
Tasha made her mistake in step 4.
