10 + 9 = 19 its simple math
Answer:
The average speed of the plain was 800 miles/h.
Step-by-step explanation:
To solve this problem we first need to convert the time the tain took to finish the journey to hours. To do that we will divide the part that is in minutes by 60 and sum to the part that is in hours, we have:
time = 3 + 33/60 = 3 + 0.55 = 3.55 hours
The average speed is given by the following formula:
average speed = distance/time
average speed = 2840/3.55 = 800 miles/h
The average speed of the plain was 800 miles/h.
That is the pattern 34,000,000
350 increased by 9 is 381.5 divid by 2 is 190.75 so that is your answer
Answer:
Sheila have 6 bills
Step-by-step explanation:
<em>Suppose Sheila has x '20' dollar bills, so the total cost of her bill = $20x</em>
<em>Suppose Tamsin has y '10' dollar bills, so the total cost of her bill = $10y</em>
<em />
<h2>
Equation 1</h2>
Sheila has a total of $50 more than Tamsin
10y + 50 = 20x
<h2>
Equation 2</h2>
Tamsin has 1 more bill than Sheila.
y = x + 1
Now solve them by putting value of x in equation
10( x + 1 ) + 50 = 20x
10x + 10 + 50 = 20x
60 = 20x - 10x
10x = 60
x = 60/10
x = 6
and
y = 7
