Opposite angles in a parallelogram are congruent
So,
6x-10 = 2x + 50
Now solve like a normal equation
4x = 60
x = 15
<span>d. It does, the points shown on the line would be part of y = −2x.
is the answer let me know if this helped</span>
Cos 210° = cos ( 180° + 30° ) - cos 30° = - √3/2
a = amount (in oz) of solution A
b = amount of solution B
The scientist wants a mixture of 110 oz, so
a + b = 110
Solution A consists of 65% salt, so each ounce of solution A contributes 0.65 oz of salt; similarly, each ounce of B contributes 0.9 oz. The mixture is supposed to consist of 75% salt, which amounts to 0.75 * (110 oz) = 82.5 oz of salt. So
0.65 a + 0.9 b = 82.5
Solve for a and b:
b = 110 - a
0.65 a + 0.9 (110 - a) = 82.5
0.65 a + 99 - 0.9 a = 82.5
0.25 a = 16.5
a = 66 ==> b = 44
Answer:
40
Step-by-step explanation:
you add all the numbers up then divide by how many numbers there are
