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Yuri [45]
2 years ago
8

From our lesson, what is your difficulty in dealing with exponential expressions?

Mathematics
1 answer:
aleksandrvk [35]2 years ago
3 0

Answer:

From the said lesson, the difficulty that I have been trough in dealing over the exponential expressions is the confusion that frequently occurs across my system whenever there's a thing that I haven't fully understand. It's not that I did not actually understand what the topic was, but it is just somewhat confusing and such. Also, upon working with exponential expressions — indeed, I have to remember the rules that pertain to dealing with exponents and frequently, I will just found myself unconsciously forgetting what those rule were — rules which is a big deal or a big thing in the said lesson because it is obviously necessary/needed over that matter. Surely, it is also a big help for me to deal with exponential expressions since it's so much necessary — it's so much necessary but I keep fogetting it.. hence, that's why I call it a difficulty. That's what my difficulty. And in order to overcome that difficulty, I will do my best to remember and understand well the said rules as soon as possible.

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Xavier is buying bottled water for his basketball team. If he has $20 to spend on water, and each bottle of water
SSSSS [86.1K]

Answer:

Step-by-step explanation:

1.5 * 13 = 19.5 dollars

0.50 = 20 - 1.5x   where 0.50 is the amount of money he has left and x is the number of bottles of water  he buys

4 0
3 years ago
9th grade math should be ez I’m tired please fast
ivanzaharov [21]

Answer:

Z=BY+R

Step-by-step explanation:

B=z-r/y

separate Z by it's self. Z= B * Y

Z =BY+R

Simple easy stuff should have no problems. I would love some more math like this bring it. C:

7 0
3 years ago
Your savings account pays 1.75% interest per year. You make a $500 deposit. How much interest does the account earn in the first
GaryK [48]
1,75% = 0,0175

per month: 0,0175/12 = 0,00145833

500*0,00145833 = 0,73$ interest
8 0
3 years ago
Read 2 more answers
"A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean
Arada [10]

Answer:

85.31% probability that their mean rebuild time exceeds 8.1 hours.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples are solved using 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.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 8.4, \sigma = 1.8, n = 40, s = \frac{1.8}{\sqrt{40}} = 0.2846

If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 8.1 hours.

This is 1 subtracted by the pvalue of Z when X = 8.1. So

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

By the Central Limit Theorem

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

Z = \frac{8.1 - 8.4}{0.2846}

Z = -1.05

Z = -1.05 has a pvalue of 0.1469

1 - 0.1469 = 0.8531

85.31% probability that their mean rebuild time exceeds 8.1 hours.

4 0
3 years ago
- 6 = z + 3<br>solve each equation for the unknown variable​
Nataly [62]
Solution: Z= -9

Reasoning: -6 - 3 = -9
4 0
3 years ago
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