Add 21 to both sides, so you get 9z = 81
Complete Question
In ΔVWX, w = 780 cm, ∠X =21° and ∠W=146°. Find the length of x, to the nearest 10th of a centimeter.
Answer:
499.9cm
Step-by-step explanation:
We solve for length x using the Sine rule
w/ sin W = x /sin X
Cross Multiply
x × sin W = w × sin X
x = w × sin X/ sin W
x = 780 × sin 21°/ sin 146°
x = 499.88 cm
Approximately to nearest tenth = 499.9cm
Answer:
B. 72
Step-by-step explanation:
The rule of 72 is used as a rough estimate of the number of years required for an investment to double.
According to this rule, the number of years 'n' necessary to double an investment at an annual rate 'r' is:
Therefore, the number that when divided by the interest rate gives the number of years required to double an investment is 72.
The answer is B. 72.
The area of the lane is 50 in² and its perimeter is 30 in.
<h3>
What is an area</h3>
Area is the amount of space occupied by a two dimensional object or figure. For a rectangle:
Area = length * width
Let the length of the lane be 10 in and the width be 5 in, hence:
Area = 10 * 5 = 50 in²
Perimeter = 2(length + width) = 2(10 + 5) = 30 in
The area of the lane is 50 in² and its perimeter is 30 in.
Find out more on area at: brainly.com/question/19819849
Answer is: -17+6+(-3)=-14
