2 years ago

7

Mathematics

1 answer:

NikAS [45]2 years ago

6 0

Answer:

Step-by-step explanation:

Both C and E are correct.

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If he wants 8,000 then he need to save $170 a month for all four years

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3 years ago

Angles D and G are complementary. What statement must always be true about angles D and G?

nikklg [1K]

Answer:

They will never intersect. I'm pretty sure that is right

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3 years ago

The vertex form of the equation of a parabola is y = 2(x+ 4)2 - 21.

Ivanshal [37]

Answer:

y = 2x² + 16x + 11

Step-by-step explanation:

first foil (x + 4)² to get x² + 8x + 16

distribute 2 to get 2x² + 16x + 32

subtract 21 from 32

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2 years ago

at 1:30 in the afternoon an old freight train and a new dart express train pull out of the new garland station going in opposite

zalisa [80]

Answer:

$V_{E} = -22.5 / 15 = 1.5 miles/minute\\V_{F} = 7.5 / 15 = 0.5 miles/minute$

Step-by-step explanation:

To answer this problem, we must bear in mind that the express train travels 3 times faster than the freight train.

If we call F the distance that the freight train travels and we call E at the distance that the express train travels, we must have the distance between them after 15 minutes it must be 30 miles.

$F + E = 30\\$

We also know that:

$E = 3F$

Since the express train travels 3 times faster than the freight train.

So, like both equations, we have to:

$F + 3F = 30\\F = 30/4\\F = 7.5 miles\\$

Then $E = 7.5*3 = 22.5$ miles in the opposite direction.

This is the distance you traveled in 15 minutes.

Therefore, the speed of the express train ( $V_{E}$ ) is the distance traveled between the time it did

$V_{E} = -22.5 / 15 = 1.5 miles/minute\\V_{F} = 7.5 / 15 = 0.5 miles/minute$

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3 years ago

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Lerok [7]

Answer:

Step-by-step explanation:

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3 years ago