What is x squared plus y squared equals nine

Answers

Answer 1

Answer: $x^2+y^2=9\n\nit's\ a\ circle\n\ncenter:(0;\ 0)\n\nradius:r=\sqrt9=3\n\nlook\ at\ the\ picture$

Related Questions

Plz help i will mark brainliest
2x+2y find the slope and y intercept
Work out the value of x in this quadrilateral.
GEOMETRY. NEED HELP NOW PLEASE!!Find m∠BAC in circle O. (The figure is not drawn to scale.) A. 170 B. 47.5 C. 42.5
The expression 8 x ( 2 + 1 ) ^2 divided by 3 = ____

Ummm SOME ONE HELP ASAP!!!!!!!!!

Answers

Answer: C

Step-by-step explanation:

Because whenever the giraffe gets bigger it weighs more. Also I am in 8th grade so I already learned this:)

When the directive word for an essay exam is criticize, it also means to:a. discuss.
b. evaluate.
c. justify.
d. state.

Answers

When the directive word for an essay exam is criticize, it also mean justify. It's justify because you want to give constructive criticism and share your opinions and ideas to also help as well.
I hope this helped you, I'm sure its correct :)

If a given data point is (1,4) and the line of best fit is y = 1.5x + 3.25, what's the residual value?

Answers

Answer:

The residual value is -0.75

Step-by-step explanation:

we know that

The residual value is the observed value minus the predicted value.

RESIDUAL VALUE=[OBSERVED VALUE-PREDICTED VALUE]

where

Predicted value.--> the predicted value given the current regression equation

Observed value. --> The observed value for the dependent variable.

in this problem

we have the point (1,4)

The observed value is 4

Find the predicted value for x=1

$y =1.5(1)+3.25=4.75$

predicted value is 4.75

RESIDUAL VALUE=(4-4.75)=-0.75

Answer:

-0.75

Step-by-step explanation:

ANYONE???????? PLZ HELP ASAP:Indicate in standard form the equation of the line through the given points.
K(6, 4), L(-6, 4)

Can you lead me through the steps because I'm not getting this at all...

Answers

Equation of a straight line: y = mx + c. m is the gradient while c is the y-intercept.
gradient m = (y2 - y1) / ( x2 - x1)
from the given coordinates, x1 = 6, x2 = -6, y1= 4, y2 = 4
m = (4 - 4) / ( -6 - 6) = 0/12 = 0
to find y- intercept, we solve for c using any of the given coordinates.
4 = 0x + c
c = 4
the equation of the line: y = 0x + 4
Standard form = ax + by = c
0x + y = 4
y = 4

A line contains the point (-2, 2) and is parallel to the line y = Â½x + 8. What is the equation of this parallel line?

Answers

Answer:

y = $(1)/(2)$ x + 3

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

given the line with equation

y = $(1)/(2)$ x + 8 ← in slope- intercept form

with slope m = $(1)/(2)$

• Parallel lines have equal slopes , then

y = $(1)/(2)$ x + c ← is the partial equation of the parallel line

to find c, substitute the point (- 2, 2 ) into the partial equation

2 = $(1)/(2)$ (- 2) + c = - 1 + c ( add 1 to both sides )

3 = c

y = $(1)/(2)$ x + 3 ← equation of parallel line

a paddle boat can move at a speed of 6km/h in still water. the boat is paddeled 16km downstream in a river in the same time it takes to go 8km upstream what is the speed of the river?

Answers

$v-the\ speed\ of\ the\ river\n\n16:(6+v)=8:(6-v)\n\n(16)/(6+v)=(8)/(6-v)\n-------------\nmultiply\ on\ the\ cross\n-------------\n8(6+v)=16(6-v)\n\n48+8v=96-16v\n\n8v+16v=96-48\n\n24v=48\ \ \ /:24\n\nv=2\ (km/h)\leftarrow Answer$

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