Answer:
Thus, the value of x = -36 when y = 15
Step-by-step explanation:
We know that if y varies directly with x, we can express the relationship such as
y ∝ x
y = kx
k = y/x
where 'k' is called constant of variation.
Given
y = -5
x = 12
Using the equation
k = y/x = -5/12
Thus, the value of k = -5/12
Finding x when y = 15
y = 15
k = -5/12
substituting y = 15 and k = -5/12 in the equation
y = kx
15 = -5/12 (x)
15×12 = -5x
180 = -5x
divding both sides by -5
-5x/-5 = 180/-5
x = -36
Thus, the value of x = -36 when y = 15
Remember, you take 1/2 of b and square it to get c
c=100
(b/2)^2=c
(b/2)^2=100
sqrt oth sides
b/2=+/-10
times both sides by 2
b=+/-20
it is 20 or -20
answe ris B
yo is right
Answer:
4 Months, and the Total amount is 280
Step-by-step explanation:
60 + 55m = ?
200 + 45m = ?
60 + 55 = 115 + 55 = 170 + 55 = 225 + 55 = 280
200 + 45 = 245 + 45 = 290 + 45 = 235 + 45 = 280
1 2 3 4
Answer:
I'm pretty sure it's 4 sorry if I'm not right I'm not the best at this stuff either
Answer:
-12/5 - 2
Step-by-step explanation:
-18÷3×8(-8)/-5×-2+(-2) =
-6×8(-8)/-5×-2+(-2) =
-48(-8)/-5×-2+(-2) =
6/-5×-2+(-2) =
-12/5 - 2
