Pam and her Brother both open a savings account each begin with the balance of zero dollars for every two dollars that Pam saves
1 answer:
You might be interested in
Answer:
0
Step-by-step explanation:
<h3>Given</h3>- (x +
)(y +
) = 1
- (x+y)² = ?
<u>Let's make substitution as:</u>
- (x +
then
- (y +
<u>Solving the first equation for x and the second one for y:</u>
- (x +
- 1 + x² = (m - x)²
- 1 + x² = m² - 2mx + x²
- 2mx = m² - 1
- x = (m² - 1)/2m
And
- (y +
- 1 + y² = 1/m² -2y/m + y²
- 1 = 1/m² - 2y/m
- m² = 1 - 2my
- 2my = 1 - m²
- y = (1 - m²)/2m
- y = - (m² - 1)/2m
<u>Now, sum of x and y:</u>
- x + y = (m² - 1)/2m - (m² - 1)/2m = 0
<u>Therefore:</u>
- (x+y)² = 0
Answer is zero
Answer:
x = 30°
Step-by-step explanation:
The arcsin (inverse sine) function can be used. Be sure to set your calculator to degrees mode.
sin(x) = 1/2
arcsin(sin(x)) = arcsin(1/2)
x = arcsin(1/2)
x = 30°
