Step-by-step explanation:
By definition, the area of a rectangle is given by:
A = w * lA=w∗l
Where,
w: width of the rectangle
l: length of the rectangle
We then have the following expression for the area:
A = k ^ 2 + 19k + 60A=k
2
+19k+60
What we must do is factorize the expression following the following steps:
1) Find two numbers that are equal to 19
2) Find two multiplied numbers equal to 60
We have then:
A = (k + 15) (k + 4)A=(k+15)(k+4)
Therefore, the width of the rectangle is:
w = (k + 4)w=(k+4)
105/30=3.5 miles a minute
1 1/4 hours =75 minutes
3.5 * 75= 262.5 miles in 1 1/4 hours
Oh boy, well looking in perspective 47.50 per ton
there are 2.5 tons. Lets break this down:
2 and half tons
2 x 47.50= N
Noted after using our trusty calculator you'll get 95
2 x 47.50= 95
then you have that half
which would look like this : 2/47.50
Divide 47.50 by 2 (Because a half is .5 or 1/2 of the whole number in this case 47.50)
2/47.50 =23.75
Next add up your two new answers 23.75 + 95 = ?
Hope this helps.
Answer: a
Step-by-step explanation: