Answer:
3x+8
Step-by-step explanation:
First, we can write the sum into a <em>mathematical expression</em>:
<em>The sum of (x+5) and (2x+3)</em>
<em />
<u>(x+5)+(2x+3)</u>
<u />
<em>However, we do not need the parenthesis. It is unnecesarry here as we are just adding the two parts:</em>
<em />
<u>x+5+2x+3</u>
<u />
Using <em>commutative property</em>, we can rearrange the symbols so that the x's are with each other and the numbers are with each other:
<u>x+2x+5+3</u>
<u />
Now we can <em>simplify</em> the expression:
<u>3x+8</u>
<u />
Hope this helped :)
Answer:
The area will decrease by 9%.
Step-by-step explanation:
The area of a rectange is given by the formula below.
Let the original length and width of the rectangle be L and W respectively.
Start by finding the original area:
<u>Original </u><u>dimensions</u>
Length= L= 100%L
Width= W= 100%W
Original area= LW
Let's find the dimensions of the new rectangle in terms of L and W.
<u>New dimensions </u>
Length= (100% +30%)L= 130%L
Width= (100%-30%)W= 70%W
New area
= 91% LW
Comparing the new area with the original area:
100% LW- 91% LW= 9% LW
∴ The area will decrease by 9%.
*Note that percentage is equivalent to dividing a number by 100.
Answer:
3/4=63/84
66.66%=56/84
5/7=60/84
⇒66.66%; 5/7; 3/4
Step-by-step explanation:
F(x)=(x-8)/(x+7). g(x)=(-7x-8)/(x-1). Plug in g(x) into f(x), f(g(x))=[(-7x-8)/(x-1)-8]/[-7x-8)/(x-1)+7], which can be simplified as (-7x-8-8x+8)/(-7x-8+7x-7)=-15x/-15=x. Plug in f(x) into g(x), g(f(x))=[-7*(x-8)/(x+7)-8]/[(x-8)/(x+7)-1]=(-7x+56-8x-56)/(x-8-x-7)=-15x/-15=x, as desired.
Answer:
8 green tshirts
Step-by-step explanation:
