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lord [1]
3 years ago
15

PLZZZZZZZZZ HLPPPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEEEE

Mathematics
2 answers:
AfilCa [17]3 years ago
7 0
<h3>Answer:   y < -4x+3</h3>

=============================================================

We need to find the equation for the boundary line. It goes through the two points (1,-1) and (2,-5)

Find the slope of the line through (x1,y1) = (1,-1) and (x2,y2) = (2,-5)

m = (y2 - y1)/(x2 - x1)

m = (-5 - (-1))/(2 - 1)

m = (-5 + 1)/(2 - 1)

m = -4/1

m = -4  is the slope

Plug m = -4 and (x1,y1) = (1,-1) into the point slope formula. Solve for y.

y - y1 = m(x - x1)

y - (-1) = -4(x - 1)

y + 1 = -4(x - 1)

y + 1 = -4x + 4   ... distributing

y + 1 - 1 = -4x + 4 - 1  ... subtracting 1 from both sides

y = -4x + 3  is the equation of the boundary line

The blue shaded region tells us to consider all points below this boundary line as solutions. So we will use a "less than" sign to indicate this

We go from y = -4x+3 to y < -4x+3  which is the answer we want.

We do not have a line under the inequality sign. Simply because the boundary is a dashed line, so we exclude points on the boundary line as solutions. If we had y \le -4x+3, then the boundary line would be solid and it would tell the reader "points on the boundary line are part of the solution set".

DiKsa [7]3 years ago
3 0
Note: The function is below the graph, so it is less than.

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ok so i put a 5 it the last one and it was right but i dunno the rest cause the 4 that i put in aint right. 20 points
Leya [2.2K]

Step-by-step explanation:

1. 3:1

2. 12:4

3. 15 : 3

plz mark my answer as brainlist and plzzzz vote me also . hope this will help you

8 0
3 years ago
From 1994 to 1995 the sales of a book decreased by 80%. If the sales in 1996 for the same as in 1994, By what percent did the in
zheka24 [161]

Answer:

400%

Step-by-step explanation:

Let the sales be "100" in 1994

Since, it decreased 80%, the sales was:

80% = 80/100 = 0.8

0.8 * 100 = 80 (decreased by 80)

So, it was

Sales in 1995: 100 - 80 = 20

Sales in 1996 was same as in 1994, so that's 100

Thus,

Sales in 1994: 100

Sales in 1995: 20

Sales in 1996: 100

We need to find percentage increase form 1995 to 1996, that is what percentage increase is from 20 to 100?

We will use the formula:

\frac{New-Old}{Old}*100

Where

New is 100

Old is 20

SO, we have:

\frac{New-Old}{Old}*100\\=\frac{100-20}{20}*100\\=4*100\\=400

So, it increased by 400%

3 0
3 years ago
Help plzzzzzzzzzzzzzz ​
UNO [17]

Answer:

II only ⇒ QR ≅ SP

Step-by-step explanation:

It definitely can’t be I or III becasue SR is smaller than QR, and PR is longer than QR. So both of those lines are not congruent to QR because they have different lengths.

7 0
2 years ago
K is between J and M. L is
I am Lyosha [343]

Answer:

12

Step-by-step explanation:

for this you need to draw a straight line and plot the points J,K,L,M,N according to the question.

here,

given K lies between J and M, L is between K and M , M is between K and N.

JN= 30, KM=8

JK=KL=LM

MJ= ?

according to the question,

J--------K-------L--------M-------N

KM= 8

KL+LM= 8 (KL+LM=KM)

KL+KL=8 ( given, LM=KL)

2KL= 8

KL=4

so,

JK= KL=4 and LM= KL= 4

now,

MJ= ?

we know

MJ= JK+KM = 4+8= 12

7 0
3 years ago
HELP PLEASE!!!!!!
Westkost [7]
False true true false true false
8 0
3 years ago
Read 2 more answers
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