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Aneli [31]
3 years ago
14

Which is the best first step when solving the following system of equations?

Mathematics
2 answers:
exis [7]3 years ago
8 0
B. Substitute 9x for y in the first equation
pychu [463]3 years ago
5 0

Answer:

IT B

Step-by-step explanation:

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Doug can paint the living room in 4 hours. it would take elaine 6 hours to paint the same room. how long would it take doug and
Jobisdone [24]
2.4 hours

You can get this by setting up the equation:

x/4 + x/6 = 1

Where x is equal to the amount of hours spent working. In this equation x/4 would be Doug. In 4 hours he would paint on room. x/6 would be Elaine. When you add them together using common denominators, you can find x. 
7 0
3 years ago
Which statement describes the line that contains the points (5, -6) and (3, -6)?
tia_tia [17]

Answer:

B

Step-by-step explanation:

Using the equation to find the slope, (-6 - -6) / (5 - 3) equals zero. This means that the line has no slope and must be flat.

4 0
3 years ago
Two towns that are 31.5 km apart are 3 cm apart on a map. What is the scale of the map?
zhuklara [117]

Answer:

3 cm on the map represents 31.5 km in reality.

3cm : 31.5 km

1cm :  31.5/3 km

1cm : 10.5km

So the scale on the map is 1cm represents 10.5 km.

4 0
3 years ago
Y=9x+4 is translated 4 units , what would be the equation on a graph?
denis-greek [22]
I noticed that this equation is in slope-intercept form (y = mx + b). M =  the slope of the line, B = the y-intercept.

If the line is translated (fancy, fancy, talk for MOVED) up. The Y-intercept would change positive (because it is moved up) by four.

4 + 4 equals...well, 8.

Hope I could help you out! If my answer is incorrect, or I provided an answer you were not looking for, please let me know.
However, if my answer is explained well and correct, please consider marking my answer as Brainliest!  :)

Have a good one.

God bless!
6 0
4 years ago
Here is a test to how good your math is,
Marina CMI [18]

Answer:

Zero

Step-by-step explanation:

The distance AB is ...

... √((5-1)²+(5-2)²) = √(16+9) = 5

The largest right triangle that can be constructed with AB as the hypotenuse is one with an altitude of 5/2 = 2.5 units. Its area will be ...

... (1/2)·5·2.5 = 6.25 . . . . square units

It is not possible to construct the triangle ABC described.

_____

In order to achieve the given area, ∠C would need to be 87.75° or smaller. It could not be 90°.

7 0
3 years ago
Read 2 more answers
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