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nordsb [41]
3 years ago
9

Need help with finding foci of parabola

Mathematics
1 answer:
mixer [17]3 years ago
7 0
Hello,
Please, see the attached files.
Thanks.

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1. Evan drove 308 km in the same time that Meghan drove 329 km. If Meghan drove
emmainna [20.7K]

Answer:

Her average speed is 94 km/h

Time taken is 3.5 hours

Step-by-step explanation:

Let Evan’s average speed be x km/h.

now since Meghan drove faster, according to the question, we can say her average speed would be x + 6 km/h

Mathematically, time = distance/speed

so; since time is the same; we have

308/x = 329/(x + 6)

cross multiply

329(x) = 308(x + 6)

329x = 308x + 1848

329x-308x = 1848

21x = 1848

x = 1848/21

x = 88 km/h

Meghan average speed = x + 6 = 88 + 6 = 94 km/h

Time taken would be 329/94 = 3.5 hours

8 0
3 years ago
I really need help please!
miskamm [114]
Simple...

you have: \frac{ 3^{-4}* 2^{3}* 3^{2}   }{ 2^{4}* 3^{-3}  }

Multiply it out-->>

\frac{8}{9}÷\frac{16}{27}

=\frac{3}{2} (A)

Thus, your answer. 
5 0
3 years ago
Simplify the problem 7x+4(6-x)+28
nignag [31]

Answer: 3

x

+

52


Step-by-step explanation:


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3 years ago
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I think it’s -infinity
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1350mm convert to inches
Alona [7]
1350 millimeters is equivalent to approximately 53.15 inches
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