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trapecia [35]
3 years ago
8

For the following system, use the second equation to make a substitution for y in the first equation.

Mathematics
2 answers:
Ulleksa [173]3 years ago
6 0
<span>For the following system, use the second equation to make a substitution for y in the first equation. 

2x + y = 6
y = 3x + 4

</span>substitute y = 3x + 4 into 2x + y = 6

2x + y = 6
2x +( 3x + 4) = 6

answer is <span>2x + (3x + 4) = 6 (last choice(</span>


ale4655 [162]3 years ago
4 0
2x + y + 3x + 4 = 6 is the correct equation :)

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I’m not understanding the answer listed on this site to the following question:
kobusy [5.1K]
Okay, I think I understand this. Our first step is to solve how long the string is after he used some of it to tie the package. I have a feeling we have to subtract 7/8 - 1/5. Find a least common multiple (in this case, it's 40) and our new fractions are 35/40 and 8/45. Subtract:

35/40 - 8/40 = 27/40.

I don't think this can be simplified down any further as they do not have any common factors. So with that in mind, let's divide 27/40 with 5/1 (5/1 is basically 5 wholes but in fraction version)

When dividing fractions, you want to use the KCF technique (my old math teacher taught me this). Keep the first fraction the same (in this case, 27/40), change the sign from multiplication to division, and flip 5/1 to get it's reciprocal, 1/5. The equation will look like this:

27/40 * 1/5 = 27/200

So each piece is about 27/200 m in length (or 0.135 m in length).

If this is wrong, please let me know, but this is what I got out of this question. I hope this helped you :)
4 0
3 years ago
What is the equation of this line?
Mamont248 [21]
(0, -3)(2, -2)
slope = (-2 + 3)/(2-0) = 1/2

b = -3
equation
y = 1/2x - 3

answer is A
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3 0
3 years ago
Read 2 more answers
Beg someone help please
dem82 [27]

Answer:

a=-26,b=-10,c=-1,d=-2

Step-by-step explanation:

when x=-3

y=-(-3)^2 +4(-3)-5=a

a=-9-12-5

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=-26

when x=-1

y=-(-1)^2 +4(-1)-5=b

=-1-4-5

b=-10

when x=2

y=-(2)^2 +4(2)-5=c

=-4+8-5

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c=-1

when x=3

y=-(3)^2 +4(3)-5=d

=-9+12-5

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d=-2

6 0
3 years ago
Read 2 more answers
A family of 5 monkeys eats 2 bananas per day each. How many bananas do they eat in 4 days?
valkas [14]

Answer:

8

Step-by-step explanation:

A family of 5 monkeys eat 2 bananas a day.

to figure out how much the monkeys will eat in 4 days

multiply 2 by 4.

make sure the question is not for each monkey or the answer will be

(2 by 4) by 5. witch would be 40

however for the case your saying the answer would be 8

8 0
3 years ago
10 POINTS AND WILL GIVE BRAINLIEST <br><br>Given: j(x) = -2 (3/2)^x. Find j(0).
FrozenT [24]

Answer:

0

Step-by-step explanation:

j(x) = -2 (3/2)^x

j(0) = -2(3/2)^0

       -2(0)

      =0

8 0
3 years ago
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