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patriot [66]
3 years ago
13

3x - y = 2

Mathematics
2 answers:
artcher [175]3 years ago
8 0

Given.

3x - y = 2

Substitute x - 1 for variable y.

3x - x - 1 = 2 ← Resulting equation

Ivahew [28]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Given

3x - y = 2

Substitute y = x - 1 into the equation

3x - (x - 1) = 2

3x - x + 1 = 2 ← simplify left side

2x + 1 = 2 ← required equation after substitution

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It is given that -7, h, k, 20,... are the first 4 terms of an arithmetic progression.
dexar [7]

Answer:

the answer should be B

Step-by-step explanation:

the first part is basically finding the difference between the terms, as we know that d=T2-T1

so by comparing the T2-T1 and T3-T2 we can find the difference with the two variables h and k

afterwards do the same with T4-T3 and T3-T2, comparing them and you will get another equation

now that you have two equations, you can do simultaneous equation to get the answers

hope i helped :D

6 0
3 years ago
I probably should've learned this but can someone help me I'm desperate!
lesantik [10]
Sorry I don't have enough time to deal with this problems, I believe that by using this formula you will easily come out with your answer. In the first one that has all sides you must use the law of cosines. Here is the formulas . Keep it because it is very helpful

6 0
3 years ago
1/3 (4+2)=-2/5(x-9) and x=4
VladimirAG [237]
So it will be
1/3(6)=-2/5(-5)
then will remove minus
1/3*6=2/5*5
then cancle 3 and 6 will be 2 and remove 5
So it become like this 2=2 it is True
5 0
3 years ago
SOS I NEED HELP ON THIS PROBLEM!!
ikadub [295]
<u>Scale - Convert to meters and reduced it to 1 cm:</u>

3 cm : 1000 cm             | GIven

3 cm : 10m                    | Convert 1000cm to 10m

1 cm: 10/3 m                 | Find 1 cm

<u>Convert the dimensions to the actual:
</u>
7.5 cm = 7.5 x 10/3 = 25m             |  Convert 7.5cm on map to actual distance

15 cm = 15 x 10/3 = 50m               |  Convert 15m on map to actual distance²

<u>Find area of the actual pool:</u>

Area = 25 x 50 = 1250 m²              | Use the formula Area = Length x Width


Answer: 1250 m²


4 0
3 years ago
30 points!
Oduvanchick [21]
Hey I’m sure it’s 4! Sorry if I’m wrong that’s quite confusing
4 0
3 years ago
Read 2 more answers
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