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egoroff_w [7]
3 years ago
15

Which is the best first step when solving the following system of equations? x + y = 3. 4 x minus y = 7. Multiply the first equa

tion by 4. Add the first equation to the second equation. Multiply the second equation by Negative 1. Subtract the second equation from the first equation.
Mathematics
2 answers:
Gala2k [10]3 years ago
8 0

Answer:

The other guy is wrong its c

Step-by-step explanation:

Kryger [21]3 years ago
6 0

Answer:

Multiply the first equation by 4.

Step-by-step explanation:

4(x+y=3) which gives

4x+4y=12

and

4x-y=7

Then subtract the two equations and the x variable will be eliminated.

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1. Which form shows the slope-intercept form?<br> y = mx +b<br> Ax + By =C<br> y-y1 = m(x-x1)
KatRina [158]

Answer:

y = mx + b

Step-by-step explanation:

b is your y intercept while m is your slope which is just rise over run.

4 0
2 years ago
Evaluate when x = 9, y = 144, and z = 16
Katyanochek1 [597]

Answer: Should be 163

Step-by-step explanation: Substitute the value of the variable into the expression and simplify.

163

5 0
3 years ago
If 4 men can chop down 28 trees in one day, how many trees can 10 men chop down in one day?
erastovalidia [21]

Step-by-step explanation:

The answer is 70 because each men chops 7 trees so 10 men = 70 trees

4 0
3 years ago
6 radians is the same as____<br> Round to the nearest hundredth of a degree.
wolverine [178]

Answer:

343.77

Step-by-step explanation:

1 radian is about 57.2958 degrees

so 57 times 6 is about 343.77

5 0
3 years ago
Read 2 more answers
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name d
laiz [17]

Answer:

B.90

Step-by-step explanation:

As there are 10 people and choosing chairperson occurs first as an independent event

=> The number of possible chairperson is 10.

After the chairperson is chosen, the number of names left in the hat is 9

=> There are 9 possible vice-chair.

However, the names left in the hat depends on which name is elected as chairperson

=> Choosing vice-chair is a an event dependent on the first event.

=> The number of possible combinations of chair and vice chair would be:

9x10 = 90

8 0
3 years ago
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