Answer:
Step-by-step explanation:
Given
Use formula:
Since then
By definition,
Answer:
if the x after the 20 means multiply then the answer is -34/7 or -4 6/7 if the x is a letter then it's 2/11
Step-by-step explanation:
20x2-7x=6
20x2=40
40-7x=6
subtract 40 from 6= 34
-7x=34
34÷-7= -34/7 if needed in a mixed fraction -4 6/7
Let's say
is the measure of the first angle and
is measure of the supplement of
. We know that supplementary angles add up to 180°, so
. We also know that
. Therefore,
. It follows that
, therefore, the first angle is 174° and the second angle is 6°.
Answer:
see explanation
Step-by-step explanation:
Divide through by 2
2a² - 5a + 3 = 0
To factor the quadratic
Consider the factors of the product of the coefficient of the a² term and the constant term which sum to give the coefficient of the x- term
product = 2 × 3 = 6 and sum = - 5
The factors are - 2 and - 3
Use the factors to split the a- term
2a² - 2a - 3a + 3 = 0 ( factor the first/second and third/fourth terms )
2a(a - 1) - 3(a - 1) = 0 ← factor out (a - 1)
(a - 1)(2a - 3) = 0
Equate each factor to zero and solve for a
a - 1 = 0 ⇒ a = 1
2a - 3 = 0 ⇒ 2a = 3 ⇒ a =