J=2l
j+l=240
sub 2l for j
2l+l=240
3l=240
divide both sides by 3
l=80
sub
j=2l
j=2(80)
j=160
jane does 160 envelopes
Answer:
Part A:
To find the area of a rectangle you want to take length times width
(2x+11)(6x+4) You want to solve by using the FOIL method
First, Outer, Inner, Last
First terms 2x*6x=12x^2, when you multiply numbers with exponents you want to add, which is how we got it to squared
Outer terms~ 2x*4=8x, we take out two outer terms and times them by each other
Inner terms~ 11*6x=66x, we take our inner two terms and times them to each other
Last terms~ 11*4=44, we take the last two terms times each other
That now leaves us with
12x^2+8x+66x+44 Now we want to combine like terms to get:
12x^2+74x+44
Part B:
The degree is your highest exponent which in our case is 2
You would classify by how many different numbers you have:
This would be a trinomial because you have three different numbers: (12x^2, 74x, and 44)
Highest degree= 2
Classification= Trinomial
Part C:
Part A demonstrates the closure property because it shows that the polynomials are closed under the operations of adding, subtraction, and multiplying
Hope this helps ;)
Answer:
3 inches 25%
4 inches 33 1/3 %
6 inches=50 %
9 inches =75 %
Step-by-step explanation:
1 foot = 12 inches
To find the percentage, we take the part over the total.
percentage = 3 inches/ 12 inches = 1/4 = 25/100= 25%
percentage = 4 inches/ 12 inches = 1/3 = 33 1/3 %
percentage = 6 inches/ 12 inches = 1/2 = 50/100=50 %
percentage = 9 inches/ 12 inches = 3/4 = 75/100=75 %
Answer:
C
Step-by-step explanation:
