Answer:
Probably 128 km/h, but maybe 98.5 km/h. See below.
Step-by-step explanation:
What does "at the same time" mean?
If it means that he covered the 240 km in the same time as he convered the 80 km, then this is how you solve it:
80 km in 1.25 hour
240 km in 1.25 hour
Total distance: 80 km + 240 km = 320 km
Total time: 1.25 hour + 1.25 hour = 2.5 hour
average speed = (total distance)/(total time) = 320 km / 2.5 hour = 128 km/h
If it means he covered the 240 km in the same time he covered the 80 km plus the rest, then this is how you solve it:
80 km in 1.25 hour
240 km in 1.25 hour + 45 min = 240 km in 1.25 houir + 0.75 hour = 240 km in 2 hour
Total distance: 80 km + 240 km = 320 km
Total time: 1.25 hour + 2 hour = 3.25 hour
average speed = (total distance)/(total time) = 320 km / 3.25 hour = 98.5 km/h
Answer:
Step-by-step explanation:
Given
Required
Find a and b
Substitute for x and y in
Rewrite as:
The above implies that (a) is correct;
Hence:
So, the equation is:
The answer is 3/9 or 1/3 chance of selecting a pair of white socks
Answer:
A). F = 
B). 374°F
Step-by-step explanation:
A). Formula to convert the temperature from degree centigrade to °F is,
C = 
We have to solve the formula to get the value of F,
9 × C = 
9C = 5(F - 32)
F =
B). In this part we have to find the value of 190° C in °F.
From the formula given in part (A),
F = 
= 374°
Therefore, 190°C = 374°F
Answer:
48cm².
Step-by-step explanation:
Area of a triangle = ½ × b × h.
½ × 12 × 8 = 48cm².
