Answer:
y = 0, y = , y = 7
Step-by-step explanation:
Factor out from each term
( 3 - 22 + 7) = 0 , that is
(3y² - 22y + 7) = 0 ← factor the quadratic
Consider the factors of the product of the coefficient of the y² term and the constant term which sum to give the coefficient of the y- term
product = 3 × 7 = 21 and sum = - 22
The factors are - 21 and - 1
Use these factors to split the y- term
3y² - 21y - y + 7 ( factor the first/second and third/fourth terms )
3y(y - 7) - 1 (y - 7) ← factor out (y - 7) from each term
(y - 7)(3y - 1)
Then
(y - 7)(3y - 1) = 0
Equate each factor to zero and solve for y
= 0 ⇒ y = 0
3y - 1 = 0 ⇒ 3y = 1 ⇒ y =
y - 7 = 0 ⇒ y = 7
Answer:
The y-intercept is (0,14) and the x-intercept is (7/5, 0).
Step-by-step explanation:
An intercept is where the line crosses the x-axis or y-axis. The y-intercept has the point (0,b) where b is the same b in y=mx+b. The y-intercept for this line is b=14 or (0,14).
The x-intercept is where y=0. Set the equation equal to 0 and solve for x to find it.
0 = -10x+14
-14=-10x
-14/-10 = x
7/5 = x
The x-intercept is (7/5, 0).
Answer:
87.4
Step-by-step explanation:
Recall, that the average is simply the sum of all the scores divided by the number of individual scores
in this case,
the sum of scores = 87+94+76+86+94=437
the number of individual scores = 5
average = sum of scores / number of individual scores
= 437 ÷ 5
= 87.4
C yes because the ratios are equivalent between each pair of values