Answer:
Step-by-step explanation:
<u>Slope-intercept form: </u>
<u>Use two of the ordered pairs and find the slope:</u>
- m = (1-2)/(0-(-2)) = -1/2
<u>y-intercept is 1 as point (0, 1) is given in the table:</u>
<u>The line is:</u>
Answer:
4pi or 12.57
Step-by-step explanation:
Area = pi * radius^2
Area = pi * 2^2
Area = pi * 4
Area = 4pi or 12.57
Answer:
Volume = 315 cm³
Step-by-step explanation:
Volume = Length × Width × Height
→ Substitute in the values
Volume = 6 cm × 3.5 cm × 15 cm
→ Simplify
Volume = 315 cm³
Answer:
-13, -3
15, 2.6
Step-by-step explanation:
x, y are the numbers
x = 5y + 2
x×y = 39
(5y + 2)×y = 39
5y² + 2y - 39 = 0
the solution of a quadratic equation :
y = (-b ± sqrt(b² - 4ac))/2a
a = 5
b = 2
c = -39
y = (-2 ± sqrt(2² - 4×5×-39))/2×5 =
= (-2 ± sqrt(4 + 780))/10 =
= (-2 ± sqrt(784))/10 = (-2 ± 28)/10
y1 = (-2 + 28)/10 = 26/10 = 2.6
y2 = (-2 - 28)/10 = -30/10 = -3
x1 = 5×2.6 + 2 = 13 + 2 = 15
x2 = 5×-3 + 2 = -15 + 2 = -13
