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Leni [432]
3 years ago
8

Naya and Scott have a cleaning business, Naya can clean the office suite in 20 minutes less time than it takes Scott to do the s

ame job. Working together, they can complete the job in 90 minutes. Approximately how long does it take Naya to complete the job if she works alone? Assuming both people work at steady rates and their rates are not affected by either working alone or working together.
A.) 123 minutes
B.) 148 minutes
C.) 172 minutes
D.) 191 minutes
Mathematics
1 answer:
Rina8888 [55]3 years ago
6 0
B
Explanation: idk i just want pts
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(6x-18)(x+4)/(3x-9)=6(x-3)(x+4)/3(x-3)=2(x+4)=2x+8
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Can someone please answer this question please answer it correctly please show work
netineya [11]

Answer:

Actual mean: 223 pages

Predicted mean / estimate: 225 pages

Explanation below

Step-by-step explanation:

Mean = total amount ÷ # of numbers

155 + 214 + 312 + 198  + 200 + 170 + 250 + 260 + 215 + 256

Add

2,230

# of numbers = 10

2,230 ÷ 10 = 223

The exact mean is 223

If I were to predict the mean, I would say that a good estimation would be around 225, because I see that the highest number in the data set is 312, and the lowest is 155. If 312 is rounded down to 300, and 155 is rounded down to 150, the number exactly in the middle of 300 and 150 is 225.

Actual mean: 223 pages

Predicted mean: 225 pages

Hope this helps :)

7 0
3 years ago
Juanita is making bread. She needs 3 1/ 2 cups of flour. Juanita only has a 1/ 4 -cup measuring cup. How many 1 / 4 cups of flou
galina1969 [7]

Answer:

juanita organizes her magazines into 3 equal piles. ... Miss Potts used a total of 28 cups of flour to bake some bread.

Step-by-step explanation:

3 0
3 years ago
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I need help on this h/j=15 for j
4vir4ik [10]
 x in (-oo:+oo)

h/j = 15 // - 15

h/j-15 = 0

h*j^-1-15 = 0

x należy do R

x in (-oo:+oo)
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3 years ago
$1,200, 3.9%, 8months
LUCKY_DIMON [66]
The answer is 1-28/2992/8 ow
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