7/3 as an improper fraction, or 2 and 1/3 as a mixed number, or even 2.3̅ as a decimal.
The numbers by writing and solving a system of equations are 50 and 105
Let the unknown numbers be x and y
If twice a number plus twice a second number is 310, then;
2x + 2y = 310
x + y = 155
x = 155 - y
Also, If the difference of the numbers is 55, hence;
x - y = 55
155 - y - y = 55
155 - 2y = 55
-2y = 55 - 505
2y = 100
y = 50
Substitute y = 25 into 1 to have:
x = 155 - 50
x = 105
Hence the numbers by writing and solving a system of equations are 50 and 105
Learn more on system of equations here: brainly.com/question/847634
Answer:
Step-by-step explanation:
The angle of elevation
It is away from the point.
If we imagine a right triangle having an angle .
Hypotenuse, Opposite=Height from sea level
Answer:
1.49
Step-by-step explanation:
(a) Kellie’s minutes per mile pace was faster than Ashley’s minutes per mile pace.
(b) Kellie ran 8 mph.
(c) Ashley ran 12 mi in 90 min.
(d) Ashley’s total time was 4 min slower than Kellie’s total time after they ran 9 mi.