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nalin [4]
3 years ago
8

I'm stuck on these two; can anyone help me solve them? (50 pts)

Mathematics
2 answers:
Korolek [52]3 years ago
8 0

Answer:

Step-by-step explanation:

1st - 84.

faust18 [17]3 years ago
3 0

Answer:

1st - 84. 2nd - Try doing this by yourself first and If you cant get it I'll help you.

Step-by-step explanation:

To find the area of a rectangle multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.

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I need help ASAP!! 13 points
OleMash [197]

Answer:

The correct answer is H

Step-by-step explanation:

1/4 of a wall in 2/3 of an hour is 40 min

so a wall takes 160 min which is 2 hours and 40 min

so 3 walls takes 8 hours

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
If a person sees 7 pennies, 6 Nickels, 4 dimes, and 6 Quarters, and he picks 1 of each, how many different combos can there be?
kompoz [17]
Well there really wouldn't be a combo since everything is different so I'm saying nun? that's what I'm going with. ( If this is wrong correct me )
3 0
3 years ago
5. Evaluate the quadratic function f(x) = 5(x-3)(x-2) when x = 9​
tatyana61 [14]

Answer:

Step-by-step explanation:

f(9)=5(9-3)(9-2)

=5*6*7

=210

7 0
3 years ago
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Jesus bought 3 pairs of jeans for $71.40. How much would he need to pay for 8 pairs of jeans?
grin007 [14]

Answer:

$190.4

Step-by-step explanation:

I divided the 71.40 dollars by three to find how much one pair would cost and then multiplied that by 8 to find how much 8 pairs would cost.

5 0
2 years ago
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