Leon did not make a mistake
Answer:
Like terms
Step-by-step explanation:
Because their exponents and variables are same.
<span>7<span>12</span></span> hours
Explanation:
Vacuum cleaner uses <span><span>58</span>=<span>1016</span></span> kilowatt per hour
Clothes dryer uses <span>4<span>1116</span>=<span>7516</span></span> kilowatt per hour
To see how many hours we can run the vacuum cleaner for using the same amount of energy as the dryer does for one hour, we can divide the vacuum cleaner energy into the dryer energy:
<span><span><span>7516</span><span>1016</span></span>=<span>7516</span>×<span>1610</span>=<span>7510</span>=7.5</span>
Jonas can run his vacuum for <span>7<span>12</span></span> hours using the same amount of energy that the dryer does in one hour.
Answer: 1481.48
Step-by-step explanation:
SI = prt
400 = p x 0.045 x 6
400 = 0.27p
P = 400 / 0.27
P = 1481.48
Answer:
B . (fog)(-4) = - 61
Step-by-step explanation:
Here, given f(x) = 4 x + 7, g(x) = 3 x- 5
Now, by the COMPOSITE FUNCTION:
(f o g) (x) = f (g(x))
Now here: )f o g) ( -4) = f (g(-4))
<u>Simplifying for g(x) = 3 x - 5</u>
g(-4) = 3 (-4) - 5 = -12 - 5 = -17
or, g (-4) = -17
Now, <u>for f(x) = 4 x + 7 </u>
f ( g(-4)) = f ( -17) = 4 (-17) + 7
= - 68 + 7 = - 61
or, f ( g(-4)) = - 61
Hence, (fog)(-4) = - 61