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inna [77]
4 years ago
10

Solve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the

numbers or symbols
2x+7y=-1 and 4x-3y=-19
Mathematics
2 answers:
AVprozaik [17]4 years ago
7 0
Multiply the equation 2x+7y=-1 by -2

add to othe equaiton
4x-3y=-19
<u>-4x-14y=2 +</u>
0x-17y=-17

-17y=-17
divide both sides by -17
y=1

sub back
2x+7y=-1
2x+7(1)=-1
2x+7=-1
minus 7 from both sides
2x=-8
divide both sides by 2
x=-4

x=-4
y=1
(x,y) is normal form
(-4,1) is answer
zzz [600]4 years ago
7 0

Answer:

The answer is (-4,1)

Step-by-step explanation:

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A.y=50+0.15x<br> B.y=50+0.45x<br> C.y=150+0.45x<br> D.y=150+0.15x
tino4ka555 [31]

Answer:

D

Step-by-step explanation:

you get 150 by taking the product of 50 and 3, this eliminates answers 'a' and 'b'

since the question states the cost per mile driven is $1.50  and 'x' represents miles driven, D is the answer

8 0
3 years ago
What is an equivalent fraction for 3:11
miss Akunina [59]

3/11.     This can also be 6/22.

5 0
3 years ago
What is the solution to this equation x - 14 = -9
joja [24]

Answer:

To determine the answer of the question above, perform the operation that will allow you to get the value of x. For the given above perform the following, 

                     

                                                 x + 14 = 63

                                              x = 63 - 14 = 49

Thus the solution of the given equation is x = 49. The answer is 49. 

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help click all the questions
DedPeter [7]

Answer:

B,B,C

Step-by-step explanation:

#1: Meat is usually in ounces, patties weigh not too much, but enough. reasonable estimate. #2: Oil is a liquid, used not too much in baking. #3: Must be equal to 16/5.

4 0
3 years ago
Subtract 8.263 from 13.48
eimsori [14]
8.263-13.48= -5.217
I suggest using a calculator for math that is hard to work out in your head.
3 0
4 years ago
Read 2 more answers
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