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sertanlavr [38]
4 years ago
11

What is X+y=-1 X-y=7

Mathematics
1 answer:
Shtirlitz [24]4 years ago
3 0

Answer:

Step-by-step explanation:

X+y=-1

X-y=7

Ys are additive inverse’s.

X+x+y-y=7-1

2x=6

X=3

Plug x=3 into x+y=-1

3+y=-1

-3 both sides

Y=-4

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Use the given graph to determine the limit, if it exists. A coordinate graph is shown with a downward sloped line crossing the y
anastassius [24]
Answer: The right hand limit is 4

-------------------------------

Start on the right side of the value x = 2. In other words, start at some value larger than 2, say x = 4. Starting at x = 4, move closer to x = 2. Move as close as you can. The closer x gets to 2, the closer y gets to 4. You'll never actually get to x = 2 or y = 4 because of the hole. However, the right-hand limiting value is 4 assuming you can keep getting closer and closer. 

Note: if you approach x = 2 from the left side, you arrive at a different y value So this suggests that overall, the limit at x = 2 doesn't exist. But the right hand limit (RHL) does exist as described above.
7 0
4 years ago
Please help with number 9 & 10
aniked [119]

Answer:

9. Triangle ABQ is congruent to Triangle BAP because of SAS congruency

10. x=5, y isn't shown anywhere

Step-by-step explanation:

9. The side AB is shared between the two triangles.

It is given that angle A and angle B are congruent.

It is given that AQ is congruent with BP.

Using these three, you can say that  Triangle ABQ is congruent to Triangle BAP because of SAS congruency.

10. 7x-4=31 (given)

x=5

Do the same thing with y.

7 0
3 years ago
The price of a certain kind of computer is surely decreasing. A
Harlamova29_29 [7]

  • So we are given p(t)= 205.75 - 0.62t
  • Lets set that equal to 1000 to find time
  • 1000= 205.75-0.62t
  • t= 1281 years

7 0
3 years ago
Are the ratios 14:18 and 7:9 equivalent
Pepsi [2]

Answer:

Yes

Step-by-step explanation:

14/18 equals 7/9

Dividing by two on the first ratio makes:

7/9 equals 7/9

4 0
3 years ago
Read 2 more answers
The price of a t-shirt was reduced from $18.00 to $13.00. Find the percent of the discount.
Mumz [18]
1st find discount
18-13=5
5 is discount

discount from original
5/18=x%
percent means parts out of 100 so x%=x/100
5/18=x/100
multiply both sides by 900
250x=9
divide both sides by 250
x=27.77777
aprox 28%

answer is 28%
6 0
3 years ago
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