Answer: 143.8 units²
<u>Step-by-step explanation:</u>
Since you know the length of two sides and the measure of the included angle, you can use the following trig formula:
Given: a = 14, c = 21, B = 87°
A is true, because if you cross multiply the two fractions, you get 36 = 36. if you cross multiply the other proportions, none of them are equal except A.
Answer:It's the last option again. You have 1 linear factor (3x) and 2 copies of a quadratic factor (x² + 10), and the partial fractions with the quadratic factor need to have a linear polynomial in the numerator.
Step-by-step explanation:
How you wrote it is kind of confusing but if I'm reading what you're saying right. There are 2028 . <span />
Answer:
c
Step-by-step explanation:
Let 1/x = a &
1/y = b
So, now the equation:
2a +3b = 13 --------------------(i)
5a - 4b = -2 --------------------(ii)
To eliminate a, Multiply equation (i) by 5 and multiply (ii) by (-2)
(i)*5 10a + 15b = 65
(ii)*(-2) <u> - 10a + 8b = 4</u> ( Now add, a will be eliminated}
23b = 69
b= 69/23
b = 3
Plug in the value of b in equation (i)
2a + 3*3 = 13
2a + 9 = 13
2a = 13 - 9
2a = 4
a= 4/2
a = 2
Now a = 1/x ------>x = 1/a = 1/2
b = 1/y ----------->y = 1/b = 1/3