Answer: 7.5
Form your proportion. Let x be the width of QRST.
Length of ABCD Length of QRST
----------------------- = -------------------------
Width of ABCD Width of QRST
8/5 = 12/x
Solve for x by cross-multiplying.
(8)(x) = (12)(5)
8x = 60
x = 7.5
Answer:

Step-by-step explanation:
The circumference of a circle is given by
, where
is the radius of the circle.
What we're given:
of 31.4
Solving for
:
For this case we have that Newton's second law is given by:

Where:
m: It's the mass
a: Acceleration
F: It's the force
According to the data we have:

Dividing between 40,000 on both sides of the equation:

Thus, the acceleration is 
Answer:

Answer:
easy 2
Step-by-step explanation:
so first you have to go to a calculator and put 0274745775 divided by 028494576 but we all know you would get a negative but thats okay but we could just put our lucky number 2 ;) yw
Answer:
x = 80°
Step-by-step explanation:
To solve this we just need to know that the sum of the inner sides of a triangle will always give us 180 °
from here we only have to apply a simple formula by adding the sides of the triangle and knowing that the result is 180 and from there clear the value x that we need to find out
70 + 30 + x = 180
x = 180 -30 - 70
x = 80°