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maks197457 [2]
3 years ago
8

Which statements are true about the ordered pair (1,2) and the system of equations? y=-2x+4 7x-2y=3 select all that apply. A.Whe

n (1,2) is substituted into the second equation,the equation is true. B.The ordered pair (1,2) is not a solution to the system of linear equations. C.When (1,2) is substituted into the second equation, the equation is false. D.When (1,2) is substituted into the first equation , the equation is false. E. The ordered pair (1,2) is a solution to the system of linear equations. F. When (1,2) is substituted into the first equation, the equation is true
Mathematics
1 answer:
arlik [135]3 years ago
5 0
Y = -2x + 4
7x - 2y = 3

A. True
B. False
C. False
D. False
E. True
F. True
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What is the 185th digit of the following pattern 12345678910111213141516
Sphinxa [80]

Answer:

185

Step-by-step explanation:

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,2021.22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40

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You have a set of nested boxes whose lengths vary directly with their widths. One box is 2.5 in, wide and 5.5 in. long. A second
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Answer:

B

Step-by-step explanation:

If you're looking for direct correlation, you're looking for a proportion for the second box. So you set the ratio of 2.5:5.5 up as a fraction. 2.5/5.5 and set it equal to the second box 3/x.

2.5     =      3

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cross multiply

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2 years ago
Trains Two trains, Train A and Train B. weigh a total of 196 tons. Train A is heavier than Train B. The
aleksklad [387]

Answer:

Train A = 128

Train B = 68

Step-by-step explanation:

We can set up a system of equations for this problem

Let A = # of tons of Train A

Let B = # of tons of Train B

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Now, we plug in A for the first equation, using substitution

(B+60) + B = 196

2B + 60 = 196

Subtract 60 from both sides

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Divide both sides by 2

B = 68

Plug in 68 for B in the 2nd equation

A = 68 + 60

A = 128

Checking work: 128 + 68 = 196 :D hope this helped

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