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erastova [34]
1 year ago
13

What are the roots of this quadratic equation?

Mathematics
1 answer:
pickupchik [31]1 year ago
5 0

Answer:

2

Step-by-step explanation:

im the best in the world

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Krystal can wax a floor in 16 minutes. Perry helped her and it took 5.76 minutes. How long would it take perry to do it alone?
finlep [7]
<span>Krystal's rate = 1 floor in 16 min. = 1/16 floors per min.

Working together their rate = 1 floor in 5.76 min. = 1/5.76 floors per min.

We need to determine Perry's rate, so we need to equate their combined rate with the sum of the individual rates.

Let Perry's time = x

In equation form, we can write:
1/16 + 1/x = 1/5.76
Solve for x:

(x+16)/16x = 1/5.76 -> 5.76(x+16) = 16x -> 10.24x = 92.16 -> x = 9

So, Perry would take 9 mins. to do the floor alone.

I hope this helped!
Please Rate & Thank!
Please mark as Brainliest!

Have a wonderful night! : )</span>
8 0
3 years ago
A winch is being used to pull a 3500-lb vehicle 30'. How much work is performed?
AlekseyPX

Answer:

105,000 foot-pounds.

Step-by-step explanation:

Work done = 3500 * 30 foot pounds

3 0
3 years ago
(15, 31) is rotated 90 ° counterclockwise which coordinates gives me
dezoksy [38]

Answer:

(-31,15)

Step-by-step explanation:

Rotating 90 degrees clockwise is very simple:

(a,b) 90 degrees= (-b,a)

Very simple.

Just switch sides and add negative to the first term.

4 0
3 years ago
Simplify by combining like terms 9x-7y-3x-5y
lions [1.4K]

Answer:

Step-by-step explanation:

6x-12y

trust me

6 0
3 years ago
Read 2 more answers
A survey records many variables of interest to the researchers conducting the survey. The following are some of the variables fr
Musya8 [376]

Answer:

The correct option is D

Step-by-step explanation:

A categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group or nominal category on the basis of some qualitative property. Example of categorical variables are race, sex group and education level.

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3 years ago
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