Six (I’m putting this because there is a there is less than 20 characters)
Add the 3 numbers that you know.
Multiply the mean of 73 by 5 (numbers you have).
Add the numbers you are given.
Subtract the sum you have from the total sum to find your missing number.
Answer:
$4.53
Step-by-step explanation:
Let us represent
The cost of a
Packet of tea = x
Packet of coffee = y
Five packets of tea and seven of coffee cost $39.40
5x + 7y = 39.40.....Equation 1
Three packets of tea and five of coffee cost $26.20.
3x + 5y = 26.20.......Equation 2
Combining both Equations
5x + 7y = 39.40.....Equation 1
3x + 5y = 26.20.......Equation 2
Multiply Equation 1 by 5 and Equation 2 by 7 to eliminate y
25x + 35y = 197.... Equation 3
21x + 35y = 183.4......Equation 4
Subtract Equation 4 from 3
3x = 13.6
x = 13.6/3
x = $4.53
Therefore, the cost of a packet of tea is $4.53
Answer:
The answer is
<h2>
</h2>
Step-by-step explanation:
Equation of a line is y = mx + c
where
m is the slope
c is the y intercept
From the question
<h3>
</h3>
Comparing it with the general equation above
Slope / m = 1/3
Since the lines are perpendicular to each other the slope of the other line is the negative inverse of the original line
That's
Slope of perpendicular line = - 3
Equation of the line using point (-4 , 1) and slope - 3 is
<h3>
</h3>
We have the final answer as
<h3>y = - 3x - 11</h3>
Hope this helps you
Answer:
Step-by-step explanation:
y = a(x - p)^2 + q....the graph of the parabola represented by this quadratic function has an axis of symmetry represented by the equation x = p.
f(x) = (x + 3)^2 - 4.....the axis of symmetry is in the p position of the formula used above.....so the axis of symmetry is -3, therefore, ur equation is x = -3
but before u do anything, u have to make sure ur quadratic equation is in vertex form...in the form of y = a(x - p)^2 + q
