Answer:
B is correct
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
3x + 12 - 5x = 22
-2x + 12 = 22
-2x = 10
x = -5
Write the equation out, x is going to be your unknown number.
Combine like terms.
We have to isolate x, so get rid of the 12 by subtracting it from both sides of the equation.
Divide by -2.
Answer:
A. $8.80
Step-by-step explanation:
$9.28 x 2.5 = $23.20
$12.80 x 2.5 = $32.00
$32.00 - $23.30 = $8.80
B. 8 lbs. caramel and 2 lbs. chocolate
Step-by-step explanation:
$9.28 x 8 = $74.24
$12.80 x 2 = $25.60
$74.24 + $25.60 = $99.84
Answer:
g(x)=2x or h(x) =2x,,,, mean the same thing
Answer:
Step-by-step explanation:
Eight
590 = 1800 e^(-0.4t) Divide by 1800
0.32778 = e^(-0.4t) Put the value for e in the denominator.
0.32778 = 1 / e^(0.4t) Notice the sign's gone. Multiply both sides by e^(0.4t)
0.32778 *e^(0.4t) = 1 Divide by 0.32778
e^(0.4t) = 3.0508 Take the natural log of both sides.
0.4t = 1.11542 Divide both sides by 0.4
t = 2.78855
You should put this in the original equation to see if it checks. It does.
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Nine
3^(3 - 3x) + 6 = 42 Subtract 6 from both sides
3^(3 - 3x) = 36 Take the log of both sides.
(3 - 3x) ln(3) = ln 36
(3 - 3x) *1.098612 = 3.58352 Divide by 1.098612
3 - 3x = 3.26186 Subtract 3 from both sides
- 3x = 0.26186 Divide by - 3
x = - 0.087287
