Answer:
1
hope this helped
Step-by-step explanation:
Answer:
y = 2/5x + 39/5
Step-by-step explanation:
point slope form is y = mx + b
so far we have y = 2/5x + b
m is slope which is given. We need to find b which is y-intercept.
They give us the point (-2,7). We can plug this into the equation to find b.
7 = 2/5(-2) + b
7 = -4/5 + b
b = 39/5
The equation now looks like y = 2/5x + 39/5
135.05 = 50 + 9.45x
85.05 = 9.45x
x = 85.05/9.45
x = 9
Mariana worked for 9 hours.
Answer:
x = 70.53 degrees
Step-by-step explanation:
equation:
cos-1 = 
⇒ cos-1 x = 
⇒ cos-1 x = 0.33
⇒ x = 70.528
round to the nearest tenth:
⇒ 70.53
Answer:
41
Step-by-step explanation:
The entire angle is 90 degrees. So, you make the two equations add up to 90
6x+5+8x+1=90
combine like terms
14x+6=90
subtract 6 from 90
14x=84
divide by 14
x=5
then, plug 5 into angle DBC equation
6(5)+5
=41
