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Bezzdna [24]
3 years ago
6

Which ordered pair is the solution to the system of equations?

Mathematics
1 answer:
Contact [7]3 years ago
5 0
\left \{ {{2x+y=-8} \atop {x-y=-4}} \right. \\+----\\\\3x=-12\ \ \ \ |:3\\x=-4\\\\-4-y=-4\\-4+4=y\\y=0\\\\Answer\ D(-4,0)
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Alicia drove 265 miles in 5 hours. What is the average rate that she traveled?
Bumek [7]
265/5 = 53/1

53 miles per hour. 

*I hope this helped!
5 0
3 years ago
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The length of a rectangle is 9 centimeters more than half
Sedaia [141]

Answer:

l = 16 cm

Step-by-step explanation:

Let's set the width of the rectangle as "w" and the length of the rectangle as "w/2 + 9".

The perimeter of a rectangle is calculated by adding up the value of all of its side lengths. Therefore, we can find the perimeter using 2l + 2w = P.

We can substitute 60 for P and w/2 + 9 for l.

  • 2(w/2 + 9) + 2w = 60
  • 2w/2 + 18 + 2w = 60
  • w + 18 + 2w = 60
  • 3w + 18 = 60
  • 3w = 42
  • w = 14

Substitute w = 14 into the equation for length l.

  • l = w/2 + 9
  • l = 14/2 + 9
  • l = 16

The length of the rectangle is 16 cm.

4 0
3 years ago
Find the quartic function that is the best fit for the data in the following table.
Nikitich [7]

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7 0
2 years ago
What is the percent of change from 4,000 to 600?<br> work too plz
xenn [34]
\frac { n }{ 100 } \cdot 4,000=600\\ \\ 4,000\cdot n=60,000\\ \\ Therefore:\\ \\ n=\frac { 60,000 }{ 4,000 }

\\ \\ =\frac { 60\cdot 1,000 }{ 4\cdot 1,000 } \\ \\ =\frac { 60 }{ 4 } \\ \\ =15

As 15% of 4,000 is 600, the percentage change was -85%.
4 0
3 years ago
Are multiples of 3 are always multiples of 6? True or False.
MissTica

Answer:

False

Step-by-step explanation:

9 is a multiple of 3 but not 6

7 0
3 years ago
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