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laiz [17]
3 years ago
14

Which of the expressions are not polynomials? Check all that apply.

Mathematics
1 answer:
dalvyx [7]3 years ago
3 0
<span>the expressions which are not polynomials 
</span><span>B. 5x^-1 + 4x^-2
</span><span>E. x2 +(square root of x) + 4
F. x^2-(square root of x ) -3 
(Method: check polynomials lesson)</span>
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Twenty people apply for 5 job openings as teacher assistants. How many different groups of people can be hired?
iVinArrow [24]

Answer:

15504 different groups

Step-by-step explanation:

We have a total of 20 people, and we want to know how many groups of 5 people we can make, where the order of the people inside the group doesn't matter, so we can solve this question calculating the combination of 20 choose 5.

The formula for combination is:

C(n, p) = n! / (p! * (n-p)!)

In this case, we have n = 20 and p = 5, so:

C(20, 5) = 20! / (5! * 15!) = 20*19*18*17*16 / (5*4*3*2) = 15504

So we have 15504 different groups.

8 0
2 years ago
Can you solve 6x+y=4 and x-4y=19
AysviL [449]
                        2    y
6x+y=4       x= _ - _
                        3   6 

x-4y=19      x=19+4y

4 0
2 years ago
What type of symmetry does this figure have?
BARSIC [14]
Rotational symmetry. Because you can rotate it and put a line through it and it would all look the same
4 0
2 years ago
Read 2 more answers
The graph shows the relationship.....
Anna35 [415]

Answer:

Part A: That 6 pounds of rice costs $18

Part B: (1,3) represents the unit price

Part C: 4 pounds of rice, because $12/3 equals 4

Step-by-step explanation:

Part A: The first point, 6, is on the amount of rice axis and the second point, 18, is on the total cost axis.

Part B: The unit price means the price for just 1 of something, so if you go to 1 pound of rice on the graph, you see it's at 3 on the total cost axis. Which means that 1 pound of rice costs $3.

Part C: From Part B you know that 1 pound of rice equals $3. So if you spend $12, then you can divide that by $3 to see how many pounds of rice you bought. 12/3 equals 4, so you bought 4 pounds of rice. Or you can count by 3's until you get to 12: 3, 6, 9, 12. That's 4 times so that means you bought 4 pounds of rice.

5 0
2 years ago
Circumference of a circle given the radius or diameter? explain why or why not
jek_recluse [69]

Answer: The Radius is the distance from the center outwards. The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle.

The formula for calculating the radius is different from calculating the diameter

Find radius

r= diameter/ 2

Radius is half of a diameter

While diameter is

d=2r

Step-by-step explanation:

6 0
2 years ago
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