Answer:
? = 7.
Step-by-step explanation:
The two triangles are similar because of the AA Theorem.
The larger triangle's side that is equal to 9 + 3 corresponds to the smaller triangle's side length of 9, while the larger triangle's 21 + ? side corresponds to the smaller triangle's 21 side. Now, we can set up a proportion!
? + 21 = 7 * 4
? + 21 = 28
? = 28 - 21
? = 7
Hope this helps!
Answer:
actually the khan academy version is 10(7−4p) because i tried just 10 and it didn't work so this is the khan academy answer
Step-by-step explanation:
Answer:
a) x = 1 + t
y = 3 - t
z = 8 +2t
b) In XY plane (-3,-1,0)
In YZ plane (0, 4, 6)
In XZ plane ( 4,0,14)
Step-by-step explanation:
The equation of plane is given as
x -y +2z = 5
a)
COMPARE THE ABOVE EQUATION with Ax+ By +Cz = d
A = 1, B = -1. C = 2
N = (1,3,8) {GIVEN POINT]
the parametric eqn. of line P(Xo , Yo, Zo) and prependicular plan Ax+ By+ Cz = d is given as
X = Xo+ At
Y = Yo + Bt
Z=Zo + Ct
x = 1 + t
y = 3 - t
z = 8 +2t
b) Line intersecting XY plane if z equal to zero i.e
0 = 8 + 2t
t =-4
for t = -4
x = -3, y = -1, z = 0
In YZ plane, x = 0
t = -1
interesting point will be
(0, 4, 6)
In XZ plane, Y = 0
t = 3
interesting point will be
(4, 0, 14)
Use Pythagorean's, in figure 1: t^2+12^2=13^2. t=\sqrt(13^2-12^2)=\sqrt(25)=5.
In figure 2: 6^2+9^2=x^2. x=\sqrt(36+81)=\sqrt(117)=3*\sqrt(13).
