Answer:
a. 4.5 miles per hour
b. 4 hours
c. 31.5 miles
Step-by-step explanation:
1. Easy since its half an hour multiply by 2
4 2/4=4 1/2 or 4.5
2. 18 miles would take
18 divided by 4.5 is equal to
4 hours
3. & hours just multiply 4.5 by 7
31.5 miles
Answer:
99.66%
Step-by-step explanation:
Answer:
5²x²- 49
Factoring: 25x2-49
A difference of two perfect squares, A²- B²can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A²- AB + BA - B²=
A² - AB + AB - B² =
A²- B²
25 is the square of 5
49 is the square of 7
x²is the square of x¹
(5x + 7) • (5x - 7)
Answer:
One advantage of the ratio scale is that all mathematical operations are permitted for ratio-scale data.
Step-by-step explanation:
9514 1404 393
Answer:
22/21
Step-by-step explanation:
Taking the derivative, we have ...
2x·dx +2y²·dx +4xy·dy +3·dy = 0
dx(2x +2y²) +dy(4xy+3) = 0
At the given point, this is ...
dx(2·2 +2·(-3)²) +dy(4·2·(-3) +3) = 0
22dx -21dy = 0
dy/dx = 22/21
The slope of the tangent at the point of interest is 22/21.
