Answer:
need a little bit more information to solve this problem!!
Step-by-step explanation:
Answer:
49.47
Step-by-step explanation:
Take what she started with and subtract what she ended with
428.25 - 378.78
49.47
This is the amount she spent
- It is linear as the equation performs ax+by +c
- y = 90.2x - 177670
- number of student to enroll 2011 is 3722
Step-by-step explanation:
- Linear is a straight line.
- Quadratic is a square which generates parabola.
- Quadratic formula is (ax)^2 + bx + c = 0.
- Linear formula is ax+bx + c = 0
- To forecast time series data modelling can be used.
- To form a linear equation y = mx + c.
- After finding x is the required value , m is the intercept and C constant.
- X axis have years and Y axis has the value.
- to find number of students x is 90.2 * 2011 - 177670.
- The result comes to 3722.
- In Data analysis predictive modeling is the second phase.
- It is important because it helps in associating to variables.
Answer:
40 miles
Step-by-step explanation:
8 gallons = 320 miles
1 = ?
320 miles / 8 gallons = 40
Derek's truck can drive 40 miles on 1 gallon
Answer:
Step-by-step explanation:
you have $4000 to invest and you invest x dollars at 10% and the remainder at 8℅.
a) an expression in x that represent the amount invested at 8% is
4000 - x
b) The The formula for simple interest is expressed as
I = PRT/100
Where
P represents the principal
R represents interest rate
T represents time in years
I = interest after t years
From the information given
P = $x
R = 10%
Assuming the investment is for 1 year, then interest,
I = (x × 10 × 1)/100
I = $0.1x
c) P = 4000 - x
R = 8℅
I = [(4000 - x) × 8 × 1)]/100
I = (32000 - 8x)/100
I = 320 - 0.08x
d) the total interest earned is
I = 0.1x + 320 - 0.08x
I = 0.02x + 320
