Answer:
y=34
x=10
Step-by-step explanation:
Answer:
Look for a pair of factors of
24
whose difference is
5 . 24
= 8 × 3 and 5 = 8 − 3 So x 2 + 5 x − 24 = x 2 + ( 8 − 3
) x −
(
8
×
3
) = (
x + 8
) (
x − 3
)
So the solutions of x 2 + 5
x −
24
=
0 are x = −
8 and x = 3
Step-by-step explanation:
Answer:
The value of a is 25
Step-by-step explanation:
When two angles are supplementary, they add up to 180 degrees
Mathematically,
(30 + 2a) + (125-a) = 180
30 + 2a + 125 - a = 180
a + 155 = 180
a = 180-155
a = 25 degrees
Answer:
x² - 4x - 21 = 0
Step-by-step explanation:
