Answer:
612
Step-by-step explanation: Im guessing ran out of time
Answer:
Step-by-step explanation:
let x represent the number of minutes of call made.
Let y represent the cost for x minutes of call.
If we plot y on the vertical axis and x on the horizontal axis, a straight line would be formed. The slope of the straight line would be
Slope, m = (10.86 - 5.91)/(10 - 5)
m = 4.95/5 = 0.99
The equation of the straight line can be represented in the slope-intercept form, y = mx + c
Where
c = intercept
m = slope
To determine the intercept, we would substitute x = 10, y = 10.86 and m = 0.99 into y = mx + c. It becomes
10.86 = 0.99 × 10 + c = 9.9 + c
c = 10.86 - 9.9
c = 0.96
The linear function becomes
y = 0.99x + 0.96
Therefore, for $12, the number of minutes would be
12 = 0.99x + 0.96
0.99x = 12 - 0.96
0.99x = 11.04
x = 11.04/0.99
x = 11.15 minutes
Answer:
26
General Formulas and Concepts:
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
Step-by-step explanation:
<u>Step 1: Define expression</u>
(-4)(-2) - 6(2 - 5)
<u>Step 2: Evaluate</u>
- Parenthesis (Subtract): (-4)(-2) - 6(-3)
- Multiply: 8 + 18
- Add: 26
Answer: The height is 83.1 units
Question:
Consider this system of equations. Which shows the first equation written in slope-intercept form?
½(2y + 10) = 7x.
y = 8.
A. y = 7x - 10
B. y = 7x/2 - 5
C. y = 7x - 5
D. y = 7x/4 - 5
Answer:
C. y = 7x - 5
Step-by-step explanation:
Given
½(2y + 10) = 7x.
Required
Convert to slope intercept form.
To do this, we simply make y the subject of formula from the given equation
We start by writing out the equation
½(2y + 10) = 7x.
Then, we open the bracket
½ * 2y + ½ * 10 = 7x
2y/2 + 10/2 = 7x
y + 5 = 7x
Then, subtract 5 from both sides of the equation
y + 5 - 5 = 7x - 5
y = 7x - 5
The equation can't be simplified any further. So, we've arrived at a solution
Hence, the slope intercept form of ½(2y + 10) = 7x is y = 7x - 5
