So bigest to smallest? 1/2, 1/5, 1/6.
If the other way, just flip it around.
Answer:
<h2>140 minutes</h2>
Step-by-step explanation:
this problem focuses on the combined work rate
both can finish the work under 63 minute
let bobby mow the lawn in x minute
Billy will then mow the lawn in x-25 minutes
Let the completed job = 1 (a mowed lawn)
we can now apply the combined work formula for the two boys as
multiplying through by x(x-25 )we have
open bracket we have
rearranging and collecting like terms we have
we can now use the quadractic formula
a= 1
b= -151
c= 1575
the first answer x= 139.72 approximately 140 minutes mins is correct for Bobby's time
let us check
we can see that the solution approximates to 1
Answer:
(a) (a² +3a -1)(a² -3a -1)
Step-by-step explanation:
The constant term of the product of the factors will be equal to the product of their constants. Since you want that product to be +1, the signs of the factor constants must be the same. That eliminates choices (c) and (d).
__
To tell which of choices (a) and (b) is correct, we can compute the squared term in their product. Let's do it in a generic way, with the constant (±1) being represented by "c".
We want the a² term in the product ...
(a² +3a +c)(a² -3a +c)
That term will be the result of multiplying both sets of first and last terms, and adding the product of the middle terms:
(a²·c) +(a²·c) -9a² = a²(2c-9)
So, we want the factor (2c-9) to be -11, which means c=-1, not +1.
The correct factorization of the given expression is ...
(a² +3a -1)(a² -3a -1) . . . . matches choice A
Answer:it might be D
Step-by-step explanation:
Answer:
Symmetric
Step-by-step explanation:
Left skewed is going up to the left
Right seemed the same but to the right
Uniform will be same level rectangular shape
