Answer:
5(3x+4y)
Step-by-step explanation:
Answer:
165 different teams of 3 students can be formed for competitions
Step-by-step explanation:
Combinations of m elements taken from n in n (m≥n) are called all possible groupings that can be made with the m elements so that:
- Not all items fit
- No matter the order
- Elements are not repeated
That is, a combination is an arrangement of elements where the place or position they occupy within the arrangement does not matter. In a combination it is interesting to form groups and their content.
To calculate the number of combinations, the following expression is applied:

It indicates the combinations of m objects taken from among n objects, where the term "n!" is called "factorial of n" and is the multiplication of all the numbers that go from "n" to 1.
In this case:
Replacing:

Solving:

being:
- 3!=3*2*1=6
- 8!=8*7*6*5*4*3*2*1=40,320
- 11!=39,916,800
So:

C= 165
<u><em>165 different teams of 3 students can be formed for competitions</em></u>
Answer:
you are correct
Step-by-step explanation:
p.s the way you worded this was confusing
Ok, so so we gots from x≤-1 and x≥1 for the bounds
hmm, the x≤-1 one
hmm, looks like the y intercept is -1 and the slope is 2/1
y=2x-1
test (-1,-3)
works
test (-2,-5)
works
yep
2x-1 is first blank
the other one
seems to have y intercept at 4 and slope of 1
y=1x+4
y=x+4
this works because I tested it
top left: 2x-1
top right: x≤-1 or x is less than or equal to -1
bottom left: x=4
bottom left: x≥1 or x is greater than or equal to 1
Answer:
80 m²
Step-by-step explanation:
If we assume the carpet is sold by the square meter, then we need to find the area of the family room in square meters.
The area of a rectangle is the product of its length and width, so Thresa's family room will have an area of ...
(8 m)×(10 m) = 80 m²
Thresa needs to buy 80 m² of carpet to cover her family room.