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m_a_m_a [10]
2 years ago
5

250

Mathematics
1 answer:
jasenka [17]2 years ago
4 0

Answer:

For number 3 its C (sorry im doing the same thing and im stuck on the last  ones)

Step-by-step explanation:

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What does X equal? WILL GIVE BRAINLIEST!
stellarik [79]

Answer:it is 18

Step-by-step explanation:

You do 40=2x+4 then do 40-4 and get 36 then 36/2 is 18

3 0
3 years ago
This couch is $100.12 and I had $1,000 how much money do I have now
Zanzabum
1,000-100.12=899.88

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hope this helped
7 0
3 years ago
Why does -30 - - 50 equal 20? What steps are being done?
ale4655 [162]
Two negatives equal a positive, so its just like subtracting 50 and 30, but your answer will be a positive.
6 0
3 years ago
Read 2 more answers
Use the cumulative normal distribution table to find the z-scores thqt bound the middle of 68% of theje area under the stanrard
padilas [110]

Answer:

Z scores between -0.995 and 0.995 bound the middle 68% of the area under the stanrard normal curve

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Middle 68%

Between the 50 - (68/2) = 16th percentile and the 50 + (68/2) = 84th percentile.

16th percentile:

X when Z has a pvalue of 0.16. So X when Z = -0.995

84th percentile:

X when Z has a pvalue of 0.84. So X when Z = 0.995.

Z scores between -0.995 and 0.995 bound the middle 68% of the area under the stanrard normal curve

7 0
3 years ago
How many 1/2s are in 4?​
WARRIOR [948]

Answer:

8

Step-by-step explanation:

5 0
3 years ago
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