PLEASEEE URGENT !!!!!!!!

Mathematics

2 answers:

Sloan [31]3 years ago

8 0

Answer:3d=15 d=5

Step-by-step explanation: Divide 3 on both sides which gives you 5.

xenn [34]3 years ago

5 0

Answer:

Find the X and Y Intercepts 3x-5y=-20

Find the X and Y Intercepts 3x-5y=-20. 3x−5y=−20 3 x - 5 y = - 20. Find the x-intercepts. Tap for more steps

Step-by-step explanation:

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Paul and Seth know that one point on the line

MakcuM [25]

Answer:

what

Step-by-step explanation:

3 0

3 years ago

Find all points on the x-axis that are a distance 5 from P(-8,3)

ser-zykov [4K]

On the x axis means that the y value is 0 or the point is (x,0)

distance formula

D= $\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$
we know that distance is 5
the first point is (x1,y1)
the (x2,y2) is (x,0)

so
D=5
x1=-8
y1=3
x2=x
y2=0

5= $\sqrt{(-8-x)^2+(3-0)^2}$
5= $\sqrt{(-8-x)^2+(3)^2}$
5= $\sqrt{64+16x+x^2+9}$
5= $\sqrt{x^2+16x+73}$
square both sides
25= ${x^2+16x+73}$
minus 25 both sides
0=x^2+16x+48
factor
0=(x+4)(x+12)
set each to zero

x+4=0
x=-4

x+12=0
x=-12

the points are

(-4,0) and (-12,0)

8 0

4 years ago

Write the equation of a circle with a center at (1, 4) where a point on the circle is (4, 8).

mina [271]

Notice the picture below

$\bf \textit{equation of a circle}\\\\
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad center\ ({{ h}},{{ k}})\qquad
radius={{ r}}\\\\
-----------------------------\\\\
\textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 1}}\quad ,&{{ 4}})\quad 
% (c,d)
&({{ 4}}\quad ,&{{ 8}})
\end{array}\qquad 
% distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}\leftarrow r$

you have the center, the h,k, all you really need is the radius "r"