She is not correct. All integers are rational numbers.
Answer:
Press A takes 10 hours to do a certain job. So Press A does (1/10)th of the job in an hour.
Press A and Press B, together do (1/2.5) or (4/10)th of the job in an hour.
So Press B does (4/10)-(1/10) = (3/10)th of the job in an hour. So Press B can do the job in (10/3) hours or 3 hour and 20 mins.
Check: A does (1/10)th and B does (3/10)th part of the job in an hour. A and B together will take (1/10)+(3/10) = 4/10th of the job in an hour. So they will complete the job in 10/4 = 2.5 hours. Correct.
Answer: Press B can do the job in 3 hour and 20 mins.
Step-by-step explanation:
Nice and simple. I'll explain it to you, not just give the answer.
Now, 20 shares = 2980, lets make shares = x, which means it turns to
20x = $2980
Now, you'd simply solve for X, which is done by dividing 2980 by 20, which gets you
x = 149 (cost of one share)
Answer:
20 ft²
Step-by-step explanation:
the area (A) of a triangle is calculated using the formula
A = 
bh ( b is the base and h the height )
here b = 5 and h = 8
A = × 5 × 8 = 20 ft²
Answer:
180 degrees.
Step-by-step explanation:
Because the angle at the circumference is 90 degrees the arc joining the 2 other points = 180 degrees.
So x = 360 - 180 = 180 degrees.
