Multiple rules you have to know. Starting from the top angle.
Angle a) - Angles opposite each other equal each other
Angle b) - sum of angles in a triangle should equal 180. The right angle is 90 and you already know angle a)
Angle c) - the flat angle on a line should be equal to 180. So part of it is 65 rest is the rest of 180
Answer:
21.6 m long
Step-by-step explanation:
To do this, we find the scale factor of the fencepost and the shadow.
3/1.8 = 1.66666667
So, we know that when we take the original length and multiply it, we get the new one, so:
1.666666667 * x = 36
x being the original length. Now, we divide both sides by 1.66666667 to get x alone and find the original length.
x = 21.6
To double check, we can take the scale factor and multiply it by the original to get the shadow.
21.6 * 1.666666667 = 36
It is correct
Answer:
The final price of the dresser is $79.2.
Step-by-step explanation:
12%=0.12
0.12*90=10.8
90-10.8=79.2
3x + 5y = -2
3x + 7y = 26
Subtract first equation from second
2y = 28
y = 14
Plug it in
x = -24