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Talja [164]
3 years ago
10

Solve the following systems of inequalities and select the correct graph: 2x-y>4 x+y< -1

Mathematics
2 answers:
brilliants [131]3 years ago
6 0

Answer:

option D or Graph D

Step-by-step explanation:

Serga [27]3 years ago
3 0

Answer:

Step-by-step explanation:

2x - y > 4 ⇒ y < 2x - 4

x + y < - 1 ⇒ y < - x - 1

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There are two cell phone plans available from Cells Phones R Us company. Plan A charges $35 a month plus $0.05 for every text me
Yuri [45]

if PLAN A is cheaper than PLAN B then,

P (A) < P (B)

30+0.01t < 20+0.05t      (subtract 0.05t from both sides)

29.95-0.04t < 19.95        (subtract 29.95 from both sides)

-0.04t < -10                      (divide both sides by -0.04)

t > 250

So plan A is cheaper than plan B when you send more than 250 texts.

Hope it helps.

5 0
2 years ago
Which of the following statements is true of chords?
nydimaria [60]
All of those are true, except the one about the radius.  Because alternate definition of diameter uses the idea of chord. So, both ends of a chord have to be on the circle, but one end of a radius is at the center, so a radius can't be a chord.
6 0
3 years ago
23+4.6.25ds_196 problem​
larisa86 [58]

Answer:

27.375

Step-by-step explanation:

6 0
3 years ago
One number is 8 times a first number. a third number is 100 more than the first number. If the sum of the three numbers is 420,
Alex17521 [72]

Answer:

(use algebra) 1st no. is a,2nd no. is 8 times the 1st which is 8a, 3rd no. 100 more than 1st which is a+100

total is 420, thus a+8a+a+100=420

10a+100=420, take 100 to the other side

10a=320 hence 32

1st no. is 32, 2nd is 256, 3rd is 356

6 0
3 years ago
State the domain and range and determine if it's a function?<br> Domain:<br> Range:<br> Function?
kramer

Step-by-step explanation: Let's first write the coordinates of each point.

When finding the coordinates of a

given point, be very careful with your signs.

On the x-axis, left means negative and right means positive

and on the y-axis, down means negative and up means positive.

The points in this problem are (-1, -2), (4, -2), (1, 1), (2, 3).

The domain is the set of all x-coordinates.

So here, the domain or D = {-1, 4, 1, 2}.

The range is the set of all y-coordinates.

So here, the range is {-2, 1, 3}.

Notice that I only listed the 1 once.

We only need to mention it once in our range.

Finally, let's determine if it' a function.

If none of the x-coordinates repeat, it's a function.

Since none of them do repeat, it's a function.

8 0
3 years ago
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