Are these correct if yes just say yes if not show me how u got ur answer

Mathematics

1 answer:

Naya [18.7K]3 years ago

3 0

Answer:

Number 2 is incorrect

Step-by-step explanation:

It is wrong because it said over three hours the train goes 135 miles so that means you would divide 135 miles by 3 hours and get 45 miles per hour.

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Which statement about these figures is true?

VikaD [51]

Answer:

OA and OC hope that helps :)

5 0

3 years ago

I need help with these two questions

BlackZzzverrR [31]

Problem 4

Answer: 47

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Work Shown:

f(x) = x^2 - 7x + 3
f(x) = (x)^2 - 7(x) + 3
f(-4) = (-4)^2 - 7(-4) + 3 ... replace each x with -4
f(-4) = 16 - 7(-4) + 3
f(-4) = 16 + 28 + 3
f(-4) = 44 + 3
f(-4) = 47

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Problem 5

Answer: See the attached image for the table

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Work Shown:

Plug in n = 27 and we get...
C = 26 + 10*n
C = 26 + 10*27
C = 26 + 270
C = 296
The input n = 27 leads to the output C = 296. This means that 27 people will have the cost be $296

Do the same for n = 39
C = 26 + 10*n
C = 26 + 10*39
C = 26 + 390
C = 416
The input n = 39 leads to the output C = 416. This means that 39 people will have the cost be $416

and also n = 43 as well
C = 26 + 10*n
C = 26 + 10*43
C = 26 + 430
C = 456
The input n = 43 leads to the output C = 456. This means that 43 people will have the cost be $456