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iren2701 [21]
3 years ago
11

Is the function a polynomial​ function? f(x)=4x-5x^2?

Mathematics
1 answer:
scoundrel [369]3 years ago
7 0
Www.mathcentre.ac.uk/resources/uploaded/mc-ty-polynomial-2009-1.pdf<span>f(x)=4x3. − 3x. 2 + 2 is a polynomial of degree 3, as 3 is the highest power of x in the formula. This is called a cubic polynomial, or just a cubic. 


</span>
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My friend sets out walking at a speed of $3$ miles per hour. I set out behind her $5$ minutes later at $4$ miles per hour. When
r-ruslan [8.4K]

Answer:  The answer is 0.25 miles.


Step-by-step explanation:  Given that my friend started walking at a speed of 3 miles per hour and I started 5 minutes after him at a speed of 4 miles per hour. We need to find the number of miles my friend travelled when I started walking.

Since I started 5 minutes after than my friend, so we are to find the distance travelled by my friend in 5 minutes.

In 1 hour, i.e., 60 minutes, distance travelled by my friend = 3 miles.

In 1 minute, distance travelled by my friend is

\dfrac{3}{60}=\dfrac{1}{20}~\textup{miles}.

Therefore, distance travelled by my friend in 5 minutes will be

\dfrac{1}{20}\times 5=\dfrac{1}{4}=0.25~\textup{miles}.

Thus, the answer is 0.25 miles.

3 0
3 years ago
Read 2 more answers
Helppp and explain pls and ty
raketka [301]
I’m not positive but last year I got this card and it’s a guide for these types of triangles. Since you’re missing the long leg but you have the short leg you have to do 22 square root 3 in order to find the long leg. That gives you 38.1051177665 so I would say none of the choices

7 0
3 years ago
A sixth grade class of 295 students is having an end of the year laser tag party. The party will cost
Korolek [52]

Answer:

The total cost of the party is approximately $2300, hence the correct answer is option D.

Step-by-step explanation:

Given:

Number of students = 295 students

cost per student =  $8.95

Discounts given by the company = $400

To find:

We need to estimate the total cost of the party.  

Solution:

To find the total cost of the party we need to multiply the total number of students into the cost per student.

This can be done as follows:

=295×8.95

=2640.25

Therefore, the total cost of the party is $2640.25, but it is given that the laser tag company gave the students a discount of $400. Hence the total cost after discount is  

=2640.25-400

=2240.25

Therefore, the total cost of the party is approximately $2300

Hence the correct answer is option D.

7 0
3 years ago
Help me please i don’t understand
LenaWriter [7]

Answer:

90

Step-by-step explanation:

There are 10 red candies, 18 green candies, 9 yellow candies, and 13 brown candies.

10 + 18 + 9 + 13 = 50.

There is a total of 50 candies. Out of the 50 candies, 18 are green.

\frac{18}{50} \\

You have to get to 250 .That means you do  \frac{18}{50}  = \frac{x}{250}

250 divided by 50 = 5.

18 x 5 = 90.

Therefore, she can expect 90 green candies

4 0
3 years ago
Evaluate the expression when m=5 and n=8.<br> 4m-7<br> 4n-3m<br> 6m/n-3
Vikentia [17]
4m - 7
4 * 5 - 7
20 - 7
First answer: 13
4n-3m
4*8 - 3*5
32-15
Second answer: 17
6m/n-3
6*5/8-3
30/8-3
3.75-3
Third answer: 0.75
3 0
3 years ago
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