3 years ago

Please help I will give brainlesstQuestion 9 of 10

Mathematics

1 answer:

inessss [21]3 years ago

8 0

Answer: D, x^3 (x-7)

Step-by-step explanation:

plug into G(f(x))

x^3 (x - 7)

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A freight train leaves a station and travels north at 60 mph. 4 hours later, a passenger train leaves on a parallel track and t

harkovskaia [24]

Answer:

first do:

60mph * 4 hours= 240mi

Let D = the distance the passenger train has to

travel to catch the freight train

Start a stopwatch when the passenger train leaves

Let t = the time on the stopwatch when they meet

Equation for freight train:

d-240=60t

Equation for passenger train:

d=100t

all together:

100t-240=60t

we can do 100t-60t because they both have (t)= 40t

40t=240 *now divide 240 by 40= 6

THEN do:

D= 100mph x 6= 600mi

They will meet 600 mi from the station

to check:

d-240=60t x 6

600-240= 360

60 x 6= 360

360=360

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3 years ago

2 inches by 1.5 inches. The scale of the copy is one in.:40cm.

Nana76 [90]

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kari74 [83]

answer:

1 : 2.5

explanation:

given ratio: 12 : 30

divide by 12:

$\frac{12}{12}$ : $\frac{30}{12}$

1 : 2.5

n = 2.5

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Answer:

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Step-by-step explanation:

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