Answer:

Step-by-step explanation:
Multiply 2 and 4 and add both exponents
2 x 4 = 8

Now we have 
To find the scale factor, we want to find the number that we would multiply 4 by to get 5. This gives us the equation 4x = 5. Solve by dividing both sides by 4:
4x/4 = 5/4
x = 1.25
The scale factor is 1.25.
No because the formula for a quadratic equation is ax^2+bx+c=0
This is a linear equation however.
Hope this helps
Answer:
s = 35pi units
We can either leave it with pi in the answer or approximate
s= 109.9557429 units
Step-by-step explanation:
Arc length is found by
s = r * theta where r is the radius and theta is given in radians
Changing the angle from 150 degrees to radians by multiplying by pi/180
150 *pi/180 = 5/6 pi
Now we can use the formula
s = 42 * 5/6 pi
s = 35pi
We can either leave it with pi in the answer or approximate
s= 109.9557429 units
Step-by-step explanation:
sin 0 = opposite ÷ hypothenus
sin 0 = 3 / 5
3 / 5 = x / 15
5 × n = 15
n = 3
x = 3 × 3 = 9
y = use pythagoras
= 12
tan 0 = opposite ÷ adjacent
tan 0 = 9/12