Answer:
D. 80x + 70 = 390
Step-by-step explanation:
80 times x (the degrees it heats up per minute times the number of minutes) + 70 (the degrees the oven was already at) = 390 (the number of degrees the oven needs to preheat to.)
This is the only answer that makes sense.
Hope this helps! :D
Also, where can I buy an oven that heats up this fast? XD
Answer: its 11
Step-by-step explanation:
DE is similar to BF and BF is half the line of BC so half of 22 is 11
Answer:
To answer the question, we need a radius or diameter. For know, I hope this equation helps.
Step-by-step explanation:
C=2π<em>r</em>
Circumference = 2 (pi) radius
For your problem, it says to use 3 for pi.
C=2(3)<em>r</em>
*If you have the diameter, but not the radius, divide that number by 2. Your radius is half the diameter.
The goal of this equation is to solve for x. So, we can start by combining like terms.
(16x) and (5x) are like terms, so we would subtract (5x) over to the other side.
131 + 16x -5x = -331 + 5x - 5x
131 + 11x = -331
Then, we can combine the other like terms, which would be (131) and (-331). Subtract 131 on both sides.
131 - 131 + 11x = -331 - 131
11x = -462
Now, we need to divide the number before x, or the coefficient.
11x/11 = -462/11
x = -42
