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Ymorist [56]
3 years ago
10

Using substitution how do you solve -4x+y=6 -5x-y=21

Mathematics
1 answer:
AnnyKZ [126]3 years ago
5 0
-4x+y=6
y=4x+6
-x=3

y=4(-3)+6
y=-6
therefore, y=-6, x=-3 
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2+3i divided by 3-3i ( a+bi form)
Oduvanchick [21]
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3 years ago
A construction uses beams that are 2,3, or 4 meters long. The measure of each beam must be converted to centimeters. Write a fun
fomenos

Answer:

The function rule be 100 × x

The independent variables i.e. (2, 3, and 4) are considered to be the domain

The dependent variable (200,300,400) are considered to be the range

Step-by-step explanation:

The computation is shown below:

As we know that

1 m = 100 cm

So

2 m = 200 cm

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4 m = 400 cm

The function rule be 100 × x

The independent variables i.e. (2, 3, and 4) are considered to be the domain

The dependent variable (200,300,400) are considered to be the range

3 0
3 years ago
Anything helps this is the last one
iVinArrow [24]

Answer:

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Step-by-step explanation:

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From a train station, one train heads north, and another heads east. Some time later, the northbound train has traveled 12 miles
tigry1 [53]

9514 1404 393

Answer:

  20 miles

Step-by-step explanation:

The north and east distances form the legs of a right triangle. The straight-line distance between the trains is the hypotenuse of that triangle. The Pythagorean theorem can be used to find the length of the hypotenuse (d).

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The two trains are 20 miles apart.

__

<em>Additional comment</em>

You may recognize the given distances are in the ratio 3 : 4.  You may recall that side ratios of 3 : 4 : 5 make a right triangle. If so, you recognize that the straight-line distance is (4 miles)×5 = 20 miles. (3:4:5 right triangles show up often in algebra and geometry problems, so might be something you want to look for.)

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3 years ago
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denis-greek [22]

Answer: B

Step-by-step explanation:

5 0
3 years ago
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