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Sidana [21]
3 years ago
11

21 points!!!

Mathematics
1 answer:
Serhud [2]3 years ago
6 0

Answer:

3rd one

4th one

5th one

8th one

Step-by-step explanation:

solve for the y intercept by plugging in f(0)

0²-4(0)-21= -21

Therefore (0,-21) is a y intercept

Factor to find the x intercepts

(x+3)(x-7)

Therefore the intercepts are

(-3,0) (7,0)

THis function has a positive coeficcent and an even degree

therefore as x approaches infinity it's infinity

and as x approaches negative infinity it's infinity

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zlopas [31]

Answer:

There are a number of ways to show whether a quadrilateral placed on a coordinate plane is a parallelogram or not. Here are a few ways:

1. Show that both pairs of opposite sides are congruent.  

2. Show that both pairs of opposite sides are parallel

3. Show that a pair of opposite sides are congruent and parallel

4. Show that the diagonals bisect each other.

In this activity, we will use the Distance, Midpoint and Slope Formulas that we learned in Algebra 1 to show congruent, bisected and parallel segments.

Midpoint, Slope and Distance Formula Review.

The midpoint of a segment in the coordinate plane with endpoints

Step-by-step explanation:

8 0
3 years ago
Amy and Sarah are twins. They have a younger brother who is 3 years younger.
Shkiper50 [21]

Answer: no, because you are subtracting the 3 rather than adding

Step-by-step explanation:

twins= x + x

brother= x-3

equation =2x + (x-3)

4 0
3 years ago
if the diameter of a circle is increased by 6 cm, what is the incriase in the circumference of the circle?​
dedylja [7]

Answer:

C=πd=π·6≈18.84956cm

Step-by-step explanation:

6 0
3 years ago
Ivan works at a stable. He has 4 bags of horse feed that each weigh 8.25 kilograms.
evablogger [386]
B. 6.6 kg explanation: 4 x 8.25 = 33 divded by 5 is 6.6
8 0
3 years ago
△ KLM ∼ △ KCB . What is the value of x?
AlekseyPX

Answer:

x=8

Step-by-step explanation:

Since the two triangles are similar, write the following proportion:

\frac{24}{16}=\frac{15}{2x-6}

Cross-multiply and solve:

24(2x-6)=16\cdot 15,\\48x-144=240,\\48x=384,\\\fbox{$x=8$}.

5 0
3 years ago
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