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slavikrds [6]
3 years ago
5

Quizziz 9th grade help please

Mathematics
2 answers:
gavmur [86]3 years ago
7 0
4 is your answer. Good luck
butalik [34]3 years ago
3 0

Answer:

4 now hurry

Step-by-step explanation:

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It takes Maya 30 minutes to solve 5 logic puzzles. At this rate, how many logic puzzles does she solve in 1 hour 30 minutes?
denis23 [38]

30 minutes = 5 puzzles

60 minutes = 10 puzzles

90 minutes = 15 puzzles

She will solve 15 puzzles in an hour and 30 minutes

4 0
3 years ago
Read 2 more answers
- 3 ( x + 4 ) = - 24
Slav-nsk [51]

Let's solve your equation step-by-step.

−3(x+4)=−24

Answer:

x=4

7 0
3 years ago
Read 2 more answers
The time taken to prepare the envelopes to mail a weekly report to all executives in a company has a normal distribution, with a
telo118 [61]

Answer:

Mailing preparation takes 38.29 min max time to prepare the mails.

Step-by-step explanation:

Given:

Mean:35 min

standard deviation:2 min

and 95%  confidence interval.

To Find:

In normal distribution mailing preparation time  taken less than.

i.eP(t<x)=?

Solution:

Here t -time and x -required time

mean time 35 min

5 % will not have true mean value . with 95 % confidence.

Question is asked as ,preparation takes less than  time means what is max time that preparation will take to prepare mails.

No mail take more time than that time .

by Z-score or by confidence interval is

Z=(X-mean)/standard deviation.

Z=1.96 at  95 % confidence interval.

1.96=(X-35)/2

3.92=(x-35)

X=38.29 min

or

Confidence interval =35±Z*standard deviation

=35±1.96*2

=35±3.92

=38.29 or 31.71 min

But we require the max time i.e 38.29 min

And by observation we can also conclude the max time from options as 38.29 min.

4 0
3 years ago
What is the shaded area?
spin [16.1K]

Answer:

The total area (including the area of the circle) would be 16 × 16 = 256 square centimetres.

The area of the circle would be (taking the value of pi as 3.14) is 200.96 square centimetres

The area of the shaded region would be 256 - 200. 96 = 55.04 square centimetres

3 0
3 years ago
Deborah finds that that the theoretical probability of flipping "heads" on a fair coin was 50%. After she flipped the fair coin
nydimaria [60]

Answer: 5% if it’s bubble sheet then 0.05

Step-by-step explanation:

Probability of flipping heads=50%

Probability of flipping practically = 45/100

=45

So 50%-45% = 5%

7 0
2 years ago
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