Answer:
3 years ago
Step-by-step explanation:
let m be Musa's age and d be Dayo's age
let x be number of years ago
m = 47
d = 22
(m - x)(d - x) = 836
(47 - x)(22 - x) = 836
1034 - 69x + x² = 836
x² - 69x + 198 = 0
This is in standard from ax² + bx + c = 0
Factor to be (x+q)(x+p)=0
p*q = c = 198
p+q = b = -69
198 = (-3)*(-66)
(-3) + (-66) = -69
Factored form is:
(x - 66)(x - 3) = 0
Set each bracket to 0
x - 66 = 0
x = 66 <= This number is inadmissable because neither Musa nor Dayo reached age 66.
x - 3 = 0
x = 3
The product of their ages was 836 3 years ago.
Answer:
(C) -6
Step-by-step explanation:
Given the following data;
Points on the graph (x1, y1) = (1, -9).
Mathematically, the equation of a straight line is given by the formula;
y = mx + c
Where;
m is the slope.
x and y are the points
c is the intercept.
To find the zero of the linear function f, we would use the following formula;
y - y1 = m(x - x1)
Substituting into the formula, we have;
y - (-9) = -3(x - 1)
y + 9 = -3x + 3
y = -3x + 3 - 9
y = -3x -6 = mx + c
Intercept (c) or zero of a function = -6
Answer:
F. 10 30. please brainliest
"X" equals 0 and "Y" also equals 0
X=0
Y=0