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suter [353]
2 years ago
14

-3

Mathematics
1 answer:
marissa [1.9K]2 years ago
6 0

Answer:

the fuel efficiencies of the first car was 15 while the second car was 35

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Some please help Harry can rake the leaves in the yard 8 hours faster than his little brother Jimmy can. If they work together,
pantera1 [17]

use rates, the rate a person is working is the reciprocal of the time working together, they work at a rate of 1/3 job per hour when two people work together their rates add together ---> 1/h + 1/j = 1/3 ---> h = j - 8 (harry takes 8 hrs less than jimmy) substitute and solve for j

<span><span>1<span>j−8</span></span>+<span>1j</span>=<span>13</span></span> combine fractions <span><span><span>j+(j−8)</span><span>j(j−8)</span></span>=<span>13</span></span> cross-multiply <span><span>j2</span>−8j=6j−24</span> <span><span>j2</span>−14j+24=0</span> Factor <span>(j−12)(j−2)=0</span> j = 12 It takes jimmy 12 hours to rake the leaves

4 0
3 years ago
What is 9% converted to a fraction
Genrish500 [490]

Answer:

9/100

Step-by-step explanation: whatever percentage over 100 is the fraction of a percentage

7 0
3 years ago
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I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
zhenek [66]

Answer:

use sine or cosine rule

Step-by-step explanation:

that's the answer by using the sine rule

8 0
2 years ago
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suppose a parabola has a vertex of (-4 7) and also passes through the point (-3,8). what is the equation of the parabola in vert
jasenka [17]
The equation would be y = (x+4)² + 7

Because adding 4 to 'x' creates a transformation 4 units left and adding 7 to the whole function moves the parabola up 7

Hope this helps!
8 0
3 years ago
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When collecting data from real-world problems, it is always best to represent the data on a bar graph. TRUE or FALSE?
adoni [48]
The answer is false.
4 0
3 years ago
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