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Marrrta [24]
3 years ago
10

Jakob is asked to simplify the expression –3a + 4b + 5a + (–7b).

Mathematics
1 answer:
expeople1 [14]3 years ago
7 0

Answer:

Step-by-step explanation iii ran out of answers ☹️

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Rate of change between (2,11) and (8,14)
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Answer:

1/2

Step-by-step explanation:

the rate of change is = the change in y/ the change in x

if the points are (2, 11) and (8, 14)  

Rate of change = (14-11) / (8-2) = 3 / 6 = 1/2

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3 years ago
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Rebecca drove 44 1/3 miles in 1 1/3 hours. What is the unit rate for miles per hour?
saul85 [17]
unit\ rate=\frac{distance}{time}\\\\
distance=44\frac{1}{3} miles\\
time=1\frac{1}{3}hour\\\\
unit\ rate=\frac{44\frac{1}{3}}{1\frac{1}{3}}=\ \ \ | make\ improper\ fractions\\
\frac{\frac{133}{3}}{\frac{4}{3}}=\frac{133}{3}*\frac{3}{4}=\frac{133}{4}=33\frac{1}{4}\\\\
unit\ rate= 33\frac{1}{4}\frac{miles}{hour}

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