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elixir [45]
3 years ago
5

Whats the answer im confused

Mathematics
1 answer:
AfilCa [17]3 years ago
4 0

Answer:

(-2,3)

Step-by-step explanation:

y=x+5       y=−2x−1

Solve y=x+5 for y:

Substitute x+5 for y in y=−2x−1:

y=−2x−1

x+5=−2x−1

x+5+2x=−2x−1+2x (Add 2x to both sides)

3x+5=−1

3x+5+(−5)=−1+(−5) (Add -5 to both sides)

3x=−6

<u>3x  </u>  =  <u>-6</u>       (Divide both sides by 3)

3           3

x=−2

Substitute −2 for x in y=x+5:

y=x+5

y=−2+5

y=3 (Simplify both sides of the equation)

Therefore, x= -2 and y=3

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Suppose that a storm front is traveling at 33 mph. When the storm is 13 miles away a storm chasing van starts pursuing an averag
azamat

Answer:

It takes 0.619 hours (approximately 37 minutes) for the van to catch up with the storm.

They have driven 33.43 miles

They will catch up when their distances are equal.

Step-by-step explanation:

The speed of the van is 54 mph, and the speed of the storm is 33 mph. They are going in the same direction, so the relative speed is the difference of their speeds:

relative speed = 54 - 33 = 21 mph

Now, to find the time when the van reaches the storm, we just need to use the equation:

distance = speed * time

13 = 21 * t

t = 13 / 21 = 0.619 hours

The distance traveled by the van is:

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The van will catch up when the distances are equal (the distance of the storm is 13 + 33*0.619 = 33.43 miles)

6 0
4 years ago
Rebecca needs 10 1/2 yards of fabric to make a quilt. She has one piece of fabric that is 2 1/2 yards and another piece of fabri
klasskru [66]

Answer:

ans = 4

Step-by-step explanation:

he has 2 1\2 and 4 1\4

to find the ans, we must firstly find out his total amount of fabric, so we add the available fabric

first we add whole numbers

2 + 4 = 6

then we add fractions

1 1

--- + ---

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3 0
3 years ago
Help me please and no links
Burka [1]

Answer:

x = -2    

x=-12

Step-by-step explanation:

5 | x+7| +14 = 39

Subtract 14 from each side

5 | x+7| +14-14 = 39-14

5 | x+7|  = 25

Divide each side by 5

5 | x+7| /5 = 25/5

| x+7|  = 5

Make two equations, one positive and one negative

x+7 =5     x+7 = -5

Subtract 7 from each side

x+7-7 = 5-7    x+7-7 = -5-7

x = -2               x=-12

7 0
3 years ago
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