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3 years ago

Define negative integer. Give an example of a negative integer and then give its opposite

1 answer:

3 0

An integer is a number and it's opposite.

A negative integer goes to the left of zero on the number line.

An example of a negative integer and it's opposite is:
negative integer: -10
opposite of the negative integer (the positive integer or additive inverse): 10

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A motorboat takes 5 hours to travel 150 miles going upstream. The return trip takes 3 hours going downstream. What is the rate o

lys-0071 [83]

Answer:

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

Step-by-step explanation:

we know that

The speed or rate is equal to divide the distance by the time

Let

x ----> the rate of the current (miles per hour)

y ----> the rate of the boat in still water (miles per hour)

we have that

going upstream

$y-x=\frac{150}{5}$

$y-x=30$ ----> equation A

going downstream

$y+x=\frac{150}{3}$

$y+x=50$ ----> equation B

Solve the system of equations by elimination

Adds equation A and equation B

$y-x=30\\y+x=50\\------\\y+y=30+50\\2y=80\\y=40$

Find the value of x

$y+x=50$

$40+x=50$

$x=10$

therefore

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

8 0

3 years ago

Fiona wrote the linear equation y = 2/5x -5

postnew [5]

Answer:

i think it is answer choice 2

Step-by-step explanation:

it is the only answer that works with the reciprocal

4 0

3 years ago

If 2.063 kilometers long and 2.07 kilometer long than how long is span of both

Troyanec [42]

4.133 kilometers

2.063 + 2.07 = 4.133

6 0

3 years ago

The sum of 8 and B is greater than 22

Alinara [238K]

Given:

The sum of 8 and B is greater than 22.

To find:

The inequality for the given statement and its solution.

Solution:

We know that, sum of two number is the addition of two numbers.

Sum of 8 and B = 8+B

It is given that, the sum of 8 and B is greater than 22.

$8+B>22$

Subtracting 8 from both sides, we get

$8+B-8>22-8$

$B>14$

Therefore, the required inequality for the given statement is $8+B>22$ and the solution is $B>14$ .

3 0

3 years ago

an oil company drilled several walls.fifty wells, or 25%,produced oil.what was the total number of wells that were drilled

Phantasy [73]

25% is equal to 100/25=1/4

We can substitute this into an equation to get the total number of wells where n can be equal to the total number of wells.

1/4*n=50
n/4=50
n=50*4
n=200

The total number of wells that were drilled was 200.

6 0

3 years ago

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