Answer:
x = 0
Step-by-step explanation:
= 2 - x ( square both sides to clear the radical )
x + 4 = (2 - x)² ← expand using FOIL
x + 4 = 4 - 4x + x² ( subtract x + 4 from both sides )
0 = x² - 5x ← factor out x from each term
0 = x(x - 5)
equate each factor to zero and solve for x
x = 0
x - 5 = 0 ⇒ x = 5
As a check
substitute these values into the equation and if both sides are equal then they are the solutions
x = 0
left side = = = 2
right side = 2 - 0 = 2
then x = 0 is a solution
x = 5
left side = = = 3
right side = 2 - 5 = - 3 ≠ 3
then x = 5 is an extraneous solution
hiii how are you feeling today
Answer:
X = 4 because 20 times 16 is 320 than if you add 4 to the 20 you will get 24. 24 times 16 is 384. BOom thats your answer and i know because i just answered it.
Step-by-step explanation:
Answer:2500mcg would be 2.5mg
Step-by-step explanation:
1000mcg = 1mg so 2500mcg = 2.5mg
Answer:
She has to score 8.5 on the balance beam to win .
Step-by-step explanation:
The average score for the gymnast to win the competition is 8.1
Her score was 7.3 on the uneven bars, 8.9 on the floor exercise, and 7.7 on the vault. We have to find how much she has to score on the balance beam for her team to win.
The average score of all the parts must be equal to 8.1
let her score on the balance beam be x.
Now we take the average,
8.1 =
x = 32.4- 23.9 = 8.5
She has to score 8.5 on the balance beam to win .