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3 years ago

Evaluate the expression. -38 + 11 a. -27 b. -49 c. 49 d. 27

Mathematics

1 answer:

kiruha [24]3 years ago

8 0

The answer is a.) -27

subtract 11 from 38
27 keeps the negative sign because -38 is larger than 11

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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

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

3 0

3 years ago

Wrong Answer I report You And You Don't Get Your Points

Nadusha1986 [10]

1. Joe- 2+b (or 2+1b)

Micheal- 2b

2. Joe- 2+10=12

Micheal- 2x10=20

3. one distributes and the other just adds regularly.

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3 years ago

1/2 of Ila’s workspace is covered in paper. 1/3 of the paper is covered in yellow sticky notes. What fraction of Ila’s workspace

Gennadij [26K]

Answer:

$\frac{1}{6}$

Step-by-step explanation:

We have been given that 1/2 of Ila’s work-space is covered in paper. 1/3 of the paper is covered in yellow sticky notes.

Ila’s work-space is covered in yellow sticky notes would be 1/3 of 1/2.

$\text{Ila’s workspace is covered in yellow sticky notes}=\frac{1}{3}\times \frac{1}{2}$

$\text{Ila’s workspace is covered in yellow sticky notes}=\frac{1\times1}{3\times 2}$

$\text{Ila’s workspace is covered in yellow sticky notes}=\frac{1}{6}$

Therefore, $\frac{1}{6}$ of Ila’s workspace is covered in yellow sticky notes.

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Ede4ka [16]

Add the 2 and 9 together:
2q+11

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