Answer:
When Finding the Y-Intercept from a Graph and Table, you are searching for the point of intersection between the equation and the y-axis. When finding the Y-Intercept from a Graph, you should find where the line from the equation crosses the y-axis. The point where the equation crosses the y-axis is the Y-Intercept.
Step-by-step explanation:
Answer:
That's happened to me too. I understand how you feel... If you keep getting warned your account will either get blocked or deleted...
Step-by-step explanation:
Answer:
2.345 cm
Step-by-step explanation:
The value has 4 significant digits. The others have either 1 or 2 sig figs. This infers that the measurement was made with a higher degree of precision that the others.
Answer:
168 girls
Step-by-step explanation:
420 × 0.40
= 168
Answer:
x = - 7, x = 3
Step-by-step explanation:
To find the zeros let y = 0, that is
- x² - 4x + 21 = 0 ( multiply through by - 1 )
x² + 4x - 21 = 0
Consider the factors of the constant term (- 21) which sum to give the coefficient of the x- term (+ 4)
The factors are + 7 and - 3, since
7 × - 3 = - 21 and 7 - 3 = + 4, thus
(x + 7)(x - 3) = 0
Equate each factor to zero and solve for x
x + 7 = 0 ⇒ x = - 7
x - 3 = 0 ⇒ x = 3