Answer:
Step-by-step explanation:
Let the smaller number be . Since they are consecutive even numbers, the larger number can be represented by .
Therefore, we have the following equation:
Thus, the larger number is
You can use proportional reasoning to answer this question.
Set up a ratio with how far she traveled in the first 2 1/3 mins. Make is equal to x feet in 8 minutes. Solve using cross products.
<u>1r feet </u> <u> x feet</u>
2 1/3 min = 8 mins
<u>8r feet</u> = <u>2 1/3 x</u>
2 1/3 2 1/3
3 3/7r feet = x
In 8 minutes, Maggie descended 3 3/7r feet.
Answer:
Step-by-step explanation:
Let x represent the speed of the slower plane. The faster plane's speed is then x+40. The sum of speeds is ...
x + (x+40) = 1180
2x = 1140 . . . . subtract 40
x = 570 . . . . . .divide by 2
x+40 = 610 . . . . the speed of the faster plane
The two speeds are 570 mph and 610 mph.
Answer:
9
Step-by-step explanation:
Since the axis of symmetry is vertical and the vertex of the parabola is at (12,-4), the vertical line x=12 is the axis of symmertry. The x-distance between the axis of symmetry and the first x intercept (15,0) is equal to 15-12=3. Hence, this x-intercept is 3 units to the right of the axis, and because it is symmetric, the other x-intercept must be 3 units to the left of the axis, so its x-coordinate must be 12-3=9. Then, the other x-intercept is at the point (9,0)