Answer:
x=2and x= -- 22
Step-by-step explanation:
Answer:
7 + 5 = 12
Step-by-step explanation:
7 steps plus 5 steps equals 12 steps
x^3 − 2y^2 − 3x^3 + z^4
Plug in 3 for x, 5 for y, and -3 for z (given)
(3)^3 -2(5^2) - 3(3^3) + (-3)^4
Simplify
(3)^3 = 3 x 3 x 3 = 27
-2(5^2) = -2 x 25 = -50
-3(3^3) = -3 x 27 = -81
(-3)^4 = -3 x -3 x -3 x -3 = 9 x 9 = 81
Combine all the terms
27 + (-50) - 81 + 81
27 - 50 - 81 + 81
-23 + 0
-23
-23, or (C) is your answer
hope this helps
Answer:
75.4 square inches
Step-by-step explanation:
The cylindrical block has a height of 4 inches and a radius of 2 inches find the total surface area of the block
The formula for the Total surface area of a cylinder
= 2πr (r + h)
= 2 × π × 2( 2 + 4)
= 75.398223686 square inches
= 75.4 square inches
The total surface area of the cylindrical block is 75.4 square inches.
Answer:
y=1
Step-by-step explanation:
y = 11x + 1
11x + 12y = 12
Take the right side of the first equation, which is 11x + 1,
since y equals it, put it in parentheses like this (11x + 1)
and put it in place of y in the second equation.
The second equation is
11x + 12y = 12
Take out the y and put in (11x + 1) in place of the y:
11x + 12(11x + 1) = 12
Remove the parentheses by using the distributive principle:
11x + 132x + 12 = 12
Combine like terms on the left
143x + 12 = 12
Subtract 12 from both sides
143x = 0
Divide both sides by 143
x = 0
Now go back and get the very first equation:
y = 11x + 1
And substitute (0) for x:
y = 11(0) + 1
y = 0 + 1
y = 1
