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Elena L [17]
3 years ago
6

Could someone explain to me how to do this!!

Mathematics
1 answer:
valina [46]3 years ago
7 0

Answer:

x=16, y=39

Step-by-step explanation:

to solve y=2x+7

Substitute 2x+7 for y in y=3x−9

y=3x−9

( solve this like a normal problem)  

2x+7=3x−9 (Add -3x to both sides)

-x+7=-9  (Add -7 to both sides)

-x=-16 (Divide both sides by -1)

x=16

Now that you found x you can substitute this in the other problem.

y=3(16)-9

y=39

Hopefully this helped!

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dusya [7]

Answer:

180,45

Step-by-step explanation:

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3 years ago
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adelina 88 [10]
I am pretty sure the answer is 13
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4 years ago
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A cylindrical oil drum has a diameter of 2 feet and a height of 3 feet what is the volume of the oil drum?
NikAS [45]
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Here, r = 2/2 = 1 ft
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Hope this helps!
4 0
3 years ago
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Gala2k [10]

the solid line passes through (0,-3) and (0,9)

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Plz help me with these two problems I’m having such trouble
igomit [66]
For No. 13 you need to calculate the distance each girl travels and compare to see whose distance is greater. The formula for distance is rate x time or d=rt. The rate is just how fast they consistently go.

Mia
d = r x t
d = 14 x 3/2
d = 21 miles

Chloe
d = r x t
d = 35 x 3/4 (btw 3/4 is just 45/60 simplified)
d = 105/4 = 26 1/4 miles

Final Answer: Chloe traveled further

For No. 14 we will recalculate Mia's distance but replace 1/5 hours with 2 hours because it says she will bike 30 minutes after Chloe had stopped. Afterwards we will compare Mia's new distance with Chloe's old distance.

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