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skelet666 [1.2K]
3 years ago
7

Explain how to do this problem

Mathematics
1 answer:
Darina [25.2K]3 years ago
3 0
The lines are parallel that mean that they both have a slope of 2 
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Solving Proportions 19/4 = x/4
fredd [130]

Answer:

x = 19

Step-by-step explanation:

To solve proportions, you first need to cross multiply. \frac{19}{4}= \frac{x}{4}, you would need to multiply each top number by 4. 76 = 4x, which then could easily be simplified down to 19 by just dividing by four.

7 0
3 years ago
4x+2y=10 <br> X-y=13 <br> Write in (x,y)
Bad White [126]

Answer:

(x = 6, y = -7)

Step-by-step explanation:

Solve the following system:

{4 x + 2 y = 10 | (equation 1)

x - y = 13 | (equation 2)

Subtract 1/4 × (equation 1) from equation 2:

{4 x + 2 y = 10 | (equation 1)

0 x - (3 y)/2 = 21/2 | (equation 2)

Divide equation 1 by 2:

{2 x + y = 5 | (equation 1)

0 x - (3 y)/2 = 21/2 | (equation 2)

Multiply equation 2 by 2/3:

{2 x + y = 5 | (equation 1)

0 x - y = 7 | (equation 2)

Multiply equation 2 by -1:

{2 x + y = 5 | (equation 1)

0 x+y = -7 | (equation 2)

Subtract equation 2 from equation 1:

{2 x+0 y = 12 | (equation 1)

0 x+y = -7 | (equation 2)

Divide equation 1 by 2:

{x+0 y = 6 | (equation 1)

0 x+y = -7 | (equation 2)

Collect results:

Answer:  {x = 6 , y = -7

5 0
3 years ago
Refer to the rectangular prism
slavikrds [6]

Answer:

Properties of a Rectangular Prism : A rectangular prism has 8 vertices, 12 sides and 6 rectangular faces. All the opposite faces of a rectangular prism are equal.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
After one hour in flight, an airplane is located 100 miles north and 200 miles west of the airport. What is the velocity of the
MAVERICK [17]
I think 224 miles an hour
3 0
3 years ago
Please help me with the following math question:
denpristay [2]

Answer:

$86.03

Step-by-step explanation:

30% off = 70% of total price. Add .06 to 1 for 6% sales tax.

($115.95*(.70))*1.06

= $86.03

6 0
2 years ago
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