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3 years ago

HELP GEOMETRY find x and y

Mathematics

1 answer:

GenaCL600 [577]3 years ago

8 0

A well-known formula gives us that $y = \frac{6x-3x}{2} = \frac{3x}{2}$ . Additionally, the sum of the angles in a circle is 360, so $6x+3x=9x=360$ , so $x=40^\circ$ . Therefore, $y = 60^\circ$ .

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Find CD if C(0,3) and D(4,7)

weeeeeb [17]

$C(0,3) \\
x_1=0 \\
y_1=3 \\ \\
D(4,7) \\
x_2=4 \\
y_2=7 \\ \\
\overset{\underline{\ \ \ \ }}{CD} =\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}=\sqrt{(4-0)^2+(7-3)^2}= \\
=\sqrt{4^2+4^2}=\sqrt{16+16}=\sqrt{16 \times 2}=4\sqrt{2} \\ \\
\boxed{\overset{\underline{\ \ \ \ }}{CD} = 4\sqrt{2}}$

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4 years ago

how many x-intercepts will the graph of y=(x-2)^2 have?

tekilochka [14]

Answer:

Step-by-step explanation:

Because it y is 0 then we can find the X intercepts. so there will be one X intercept.

4 0

3 years ago

Y=2× Y=×+1<br> A: (2/3, 1/3)<br> B: (1,2)<br> C: (2,1)<br> D: (1/3, 2/3)

FrozenT [24]

Answer:

The answer is B: (1,2)

Step-by-step explanation:

(solved using elimination method)

-2x+y=0

y=x+1

-x+y=1

-2x+y=0

x+y=-1

-x=-1

x=1

-1+y=1

y=2

(x,y)=(1,2)

5 0

3 years ago

What is the second factor when 0.200 is written scientific notation

Phoenix [80]

Answer:

2*10^-1

Step-by-step explanation:

U shud know y

5 0

4 years ago

Find the general solution of x'1 = 3x1 - x2 + et, x'2 = x1.

Ann [662]

Note that if ${x_2}'=x_1$ , then ${x_2}''={x_1}'$ , and so we can collapse the system of ODEs into a linear ODE:

${x_2}''=3{x_2}'-x_2+e^t$
${x_2}''-3{x_2}'+x_2=e^t$

which is a pretty standard linear ODE with constant coefficients. We have characteristic equation

$r^2-3r+1=\left(r-\dfrac{3+\sqrt5}2\right)\left(r+\dfrac{3+\sqrt5}2\right)=0$

so that the characteristic solution is

${x_2}_C=C_1e^{(3+\sqrt5)/2\,t}+C_2e^{-(3+\sqrt5)/2\,t}$

Now let's suppose the particular solution is ${x_2}_p=ae^t$ . Then

${x_2}_p={{x_2}_p}'={{x_2}_p}''=ae^t$

and so

$ae^t-3ae^t+ae^t=-ae^t=e^t\implies a=-1$

Thus the general solution for $x_2$ is

$x_2=C_1e^{(3+\sqrt5)/2\,t}+C_2e^{-(3+\sqrt5)/2\,t}-e^t$

and you can find the solution $x_1$ by simply differentiating $x_2$ .

7 0

3 years ago