Answer: The product of (3x+7) and (x-7) equals 3x^2 + 28x + 49
Step-by-step explanation:
To find the product of (3x+7) and (x-7) means to multiply both variables: To multiply both variables, we first multiply 3x by the expression, x - 7, then multiply 7 by the expression, x - 7.
(3x × x) +( 3x × 7) + (7 × x) + ( 7 × 7)
= 3x^2 + 21x + 7x + 49
= 3x^2 + 28x + 49
It would end up being 2 dollars and 45 cents
Answer:
60
Step-by-step explanation:
Standard calculation for Perimeter is 2L+2W=P or 2(L+W)=P
As we have the totals for the perimeter at 32m and know the lenght is 6m longer than width we can build an equation to find W.
2(L+W)=Perimeter
2(x+x+6)=32
2(2x+6)=32
2x+6=32/2
2x+6=16
2x=16-6
2x=10
x=10/2
x=5
Now we have the width of 5m. As length is 6m longer than width means we add 6m to 5m to determine length
L=W+6
L=5+6
L=11
To determine if your calculations are correct place your L and W answers into original eqution to determine perimeter
2(11+5)=32
2(16)=32
32=32
Yes, it is found correct. Now to find the Area using the standard formula for Area. Area=L*W or A=LW
A=(11)(5)
A=55
Area = 55sq m
