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evablogger [386]
2 years ago
8

Help me pls, i dont understand​

Mathematics
2 answers:
lesya692 [45]2 years ago
7 0
The answer is -2, 1 because the dots are aligned on the numbers
LiRa [457]2 years ago
5 0

Answer:

2

Step-by-step explanation:

to find the slope you do rise over run (2/1)

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Can someone please give me the (Answers) to this? ... please ...<br><br> I need help….
Mrac [35]

Answer:

Step-by-step explanation:

5. x/7 = 9/x

x^2 = 63

x= 3\sqrt{7}

6. x/84 = 16/x

x^2 = 1344

x=8\sqrt{21}

7. x/12 = 12/16

16x=144

x=9

8. x/48 = 48/64

64x=2304

x=36

5 0
2 years ago
Read 2 more answers
What is 15% of 12 meters
melomori [17]
Think of the "of" as a multiplication sign:
(.15)(12)= 1.8 meters
There you go! hope this helps with this problem and future ones.
7 0
3 years ago
Read 2 more answers
Mopeds (small motorcycles with an engine capacity below 50cm3) are very popular in Europe because of their mobility, ease of ope
d1i1m1o1n [39]

Answer:

a) 96.64% probability that maximum speed is at most 50 km/h

b) 24.67% probability that maximum speed is at least 48 km/h

c) 86.64% probability that maximum speed differs from the mean value by at most 1.5 standard deviations

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 46.8, \sigma = 1.75

A. What is the probability that maximum speed is at most 50 km/h?

This is the pvalue of Z when X = 50. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{50 - 46.8}{1.75}

Z = 1.83

Z = 1.83 has a pvalue of 0.9664

96.64% probability that maximum speed is at most 50 km/h.

B. What is the probability that maximum speed is at least 48 km/h?

This is 1 subtracted by the pvalue of Z when X = 48.

Z = \frac{X - \mu}{\sigma}

Z = \frac{48 - 46.8}{1.75}

Z = 0.685

Z = 0.685 has a pvalue of 0.7533

1 - 0.7533 = 0.2467

24.67% probability that maximum speed is at least 48 km/h.

C. What is the probability that maximum speed differs from the mean value by at most 1.5 standard deviations?

Z = 1.5 has a pvalue of 0.9332

Z = -1.5 has a pvalue of 0.0668

0.9332 - 0.0668 = 0.8664

86.64% probability that maximum speed differs from the mean value by at most 1.5 standard deviations

6 0
3 years ago
If 3 pipes can fill the tank completely in 2 hour then when will 1 pipe fill the tank​
Montano1993 [528]

Answer:

6 hours

Step-by-step explanation:

8 0
3 years ago
5/6 in cubic cm rounded to the nearest tenth
ollegr [7]

Answer:

5/6 cubic inches = 5/6 x 16.38 cubic cms

= 13.65 cubic cms

Step-by-step explanation:

We are asked to convert 5/6 cubic inches in cubic cm rounded to the nearest tenth

1 inch =2.54 cms.

Hence 1 cubic inches = 16.38 cubic cms

Hence 5/6 cubic inches = 5/6 x 16.38 cubic cms

= 13.65 cubic cms

7 0
3 years ago
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