Answer:
x ≈ 30.9 (Choice D)
Step-by-step explanation:
We can use cosine for solving this question:
cos (61°) = 15 / x
x = 15 / cos (61°)
x = 30.93998011
x ≈ 30.9 (Choice D)
Answer:
$138.60
Step-by-step explanation:
10% of 2200 is 220.
2200 - 220 = 1980
7% of 1980 is 138.60
Answer:
It is the short leg.
Step-by-step explanation:
The triangle and is called a right triangle and the side opposite the 30-degree angle is the shorter leg
You have to rearrange into the format y=mx+b.
Let the cost of a lamp = x
6 lamps would cost 6x
He bought 3 lamps at 3x plus Thad 950 left.
3 lamps plus the 950
Would be the same amount as 6 lamps:
Set up an equation and solve for x:
3x + 950 = 6x
Subtract 3x from both sides:
950 = 3x
Divide both sides by 3:
X = 316.67
Each lamp was $316.67
Multiply the price of a lamp by 6:
316.67 x 6 = 1900
He had $1900
