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2 years ago

The questions are in the picture (I’LL GIVE BRAINLEST) PLEASEEEEEEEEEEE HELPPPPPPP

Mathematics

1 answer:

PIT_PIT [208]2 years ago

8 0

Answer:

i think part A

1)3:2

2)3:4

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A quadratic function is a function of the form y=ax^2+bx+c where a, b, and c are constants. Given any 3 points in the plane, the

pochemuha

Answer:

The quadratic function whose graph contains these points is $y=-x^{2}-2x-2$

Step-by-step explanation:

We know that a quadratic function is a function of the form $y=ax^{2}+bx+c$ . The first step is use the 3 points given to write 3 equations to find the values of the constants a,b, and c.

Substitute the points (0,-2), (-5,-17), and (3,-17) into the general form of a quadratic function.

$-2=a*0^{2}+b*0+c\\c=-2$

$-17=a*-5^{2}+b*-5+c\\c=-25a+5b-17$

$-17=a*3^{2}+b*3+c\\ c=-9a-3b-17$

We can solve these system of equations by substitution

Substitute $c=-9a-3b-17$

$-9a-3b-17=25a+5b-17\\-9a-3b-17=-2$

Isolate a for the first equation

$-9a-3b-17=-25a+5b-17\\a=\frac{b}{2}$

Substitute $a=\frac{b}{2}$ into the second equation

$-9\left(-\frac{b}{2}\right)-3b-17=-2$

Find the value of b

$-9\left(-\frac{4b}{17}\right)-3b-17=-2\\ b=-2$

Find the value of a

$a=\frac{b}{2}\\ a=-1$

The solutions to the system of equations are:

b=-2,a=-1,c=-2

So the quadratic function whose graph contains these points is

$y=-x^{2}-2x-2$

As you can corroborate with the graph of this function.

8 0

3 years ago

Is 27.5 a rational number

laiz [17]

Yes because it has an odd number on the end.

6 0

2 years ago

PLZ HELP!!!! WILL MARK BRAINLIEST!!!!

Yuliya22 [10]

Answer:

2 $a^{3} b^{5$

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

The length of the rectangular field is 18cm, and the width is 24cm,

natali 33 [55]

Step-by-step explanation:

Just do this

2(L+B)

2(18+24)

2×42

84 Ans.

6 0

2 years ago

Read 2 more answers

A high school math class has 28 students: 18 seniors and 10 juniors. What is the probability that four randomly selected student

aniked [119]

Answer:

18/28, or percentage wise, approximately 64.2%

Step-by-step explanation:

Take the seniors and divide it by the total # of students, and you got your probability!

7 0

2 years ago