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Andrej [43]
2 years ago
8

Zane took three typing tests and recorded the results as shown.

Mathematics
1 answer:
MAVERICK [17]2 years ago
6 0

Answer:

A

Step-by-step explanation:

For test A, the unit rate is 30 words per minute divided by 4 minutes, or 7.5 words per minute.

Unit rate = 78 words/15 minutes = 5.2 words per minute for test B.

The unit rate for test C is 99 words/22 minutes, or 4.5 words per minute.

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How many real roots and how many complex roots exist for the polynomial
Volgvan

Answer:

D. 4 real roots and 0 complex roots

Step-by-step explanation:

If I assume that the function you are saying is

F(x)=x^4+x^3-5x^2+x-6

There should be up to "4 roots," there can't be more or less than 4 total solutions. First, we need to check how many sign changes are there in this function. There are 3 positive real roots. Now lets check for negative roots.

F(-x)=x^4-x^3-5x^2-x-6

There are is only 1 negative real root. Since we basically have 4 real roots, and the max is 4. There should be 4 real roots and 0 complex roots.

8 0
3 years ago
What is the solution to this system of linear equations?
LekaFEV [45]

Answer:

4th

Step-by-step explanation:

(-1,3)

here is the answer

5 0
3 years ago
What is the answer to 4÷8/12
lawyer [7]

Answer:

2/12

PLZ tell me if I am wrong because am not usually to good at math

5 0
3 years ago
Change 6.00pm to 24 hours clock time<br><br>use a colon <br><br>​
kkurt [141]

Answer:

<h3>18:00 </h3>

Step-by-step explanation:

6:00 PM equals 18:00 in 24 hrs clock time.

<h3>Hope it helps you.. </h3>

3 0
2 years ago
If x = 2 and y = -3, what is the value of 2x^2 + 3xy – 2y^2?
sammy [17]

Answer: Given as,X=2 & Y=3,

now multiplying we get,

2xxy=2×2×3=12

Ans.) 12

Step-by-step explanation:

7 0
2 years ago
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