Answer:to find the y intercept plug in 0 for x.
Step-by-step explanation:
1. x-y=4
0-y=4
y= -4
intercept written as (0,-4)
The perimeter of a rectangle is represented by 4x^2 + 5x − 2. The perimeter of a smaller rectangle is represented by x^2 + 3x + 5. Which polynomial expression BEST represents how much larger the first rectangle is than the smaller rectangle?
A) 3x^2 + 2x − 7
B) 3x^2 + 2x − 3
C) 3x^2 + 8x + 3
D) 5x^2 + 8x − 7
<h3><u>Answer:</u></h3>
Option A
The polynomial expression best represents how much larger the first rectangle is than the smaller rectangle is
<h3><u>Solution:</u></h3>
Perimeter of a rectangle is represented by 4x^2 + 5x − 2
Perimeter of a smaller rectangle is represented by x^2 + 3x + 5
To Find : Polynomial expression that represents how much larger the first rectangle is than the smaller rectangle.
Which means we have to find difference between perimeter of both rectangles
Subtract the equation of perimeter of smaller rectangle from equation of perimeter of a larger rectangle
Difference = perimeter of a larger rectangle - perimeter of smaller rectangle
On removing the brackets we get,
Thus option A is correct
- 75 is the opposite of 75, because they have the same absolute value (distance from 0), and they on different sides of zero.
Step-by-step explanation:
plan A = $25. + $0.16/min
plan B = $29 + $0.11/min
let x be no of minutes and combine both eqns...
=> 25 + 0.16x = 29 + 0.11x
=> 0.05x = 4
x = 80minutes
thus at 80mins both plans shall be equal at a cost of $37.80
Answer:
x = 39.1
Step-by-step explanation:
To find the mean, add up all the data points and then divide by the number of data points
(31.7+ 42.8+ 26.4+ x)/4 = 35
Multiply each side by 4
(31.7+ 42.8+ 26.4+ x)/4*4 = 35*4
(31.7+ 42.8+ 26.4+ x) = 140
Combine like terms
100.9+x = 140
Subtract 100.9 from each side
x = 140-100.9
x = 39.1