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Otrada [13]
2 years ago
6

Please help me please i really need help please

Mathematics
2 answers:
kari74 [83]2 years ago
8 0
Point Form: (1,-5)
Equation Form: x-1,y=-5
alekssr [168]2 years ago
7 0
There u go that’s the answer

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Plz help ASAP need help on this
chubhunter [2.5K]

Answer:

I might be wrong, but most likely diameter

7 0
2 years ago
Read 2 more answers
1. Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations
sasho [114]

Answer:

The equation is y=2x^2+4x-7

Step-by-step explanation:

Let the quadratic function be


y=ax^2+bx+c


The point (-4,9) must satisfy this function,

\Rightarrow a(-4)^2+b(-4)+c=9


\Rightarrow 16a-4b+c=9...(1)


The point (0,-7) must also satisfy this function,

\Rightarrow a(0)^2+b(0)+c=-7


\Rightarrow c=-7...(2)



The point (1,-1) must also satisfy this function,

\Rightarrow a(1)^2+b(1)+c=-1


\Rightarrow a+b+c=-1...(3)


We put equation 2 into equation 1 to get;


\Rightarrow 16a-4b-7=9


\Rightarrow 16a-4b=16


\Rightarrow 4a-b=4...(5)


We again put equation 2 into equation 3 to get;


\Rightarrow a+b-7=-1


\Rightarrow a+b=6...(6)


We add equation 5 and 6 to get;

5a=10


\Rightarrow a=2


We put a=2 into equation 6 to get;


2+b=6


\Rightarrow b=6-2


\Rightarrow b=4


The equation is therefore y=2x^2+4x-7

5 0
2 years ago
Based on your results in Question 1, how is the volume of the cone related to the volume of the cylinder, given that their bases
kaheart [24]

Vcylinder : Vcone = 3:1

6 0
3 years ago
Sid used geometry software to draw a circle of a radius 4 units on a fgrid. He estimated the area of the circle by ciunting the
Alina [70]

Answer:

Therefore, the error is 52-50.27=1.73.

Step-by-step explanation:

We know that Sid used geometry software to draw a circle of a radius 4 units on a fgrid. He estimated the area of the circle by ciunting the squares that were mostly inside the circle and got an answer of 52 sq units.

We use the formula:

P=r^2\cdot\pi\\P=4^2\cdot \pi\\P=50.27

Therefore, the error is 52-50.27=1.73.

4 0
2 years ago
the diagonals PR and QS of a rhombus intersect each other at point O. prove that 2(PQ) + 2(RS) + 2(RS)+ 2(PS) = 4 (2(OP)+2(OQ))
Svetllana [295]

Answer:

6 is the answer

Step-by-step explanation:

3 0
3 years ago
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