Help me the picture is below..........................................

Mathematics

1 answer:

qwelly [4]3 years ago

7 0

Answer:

= $(\frac{5}{13}t+\frac{1}{13}t)+(-12+15) = \frac{6}{13}t +3$

Explanation

Separate the values with the variables and add them together, the same case for those without the variables.

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Find the number of real number solutions for the equation.

vampirchik [111]

Answer:

x = ±1

Step-by-step explanation:

x² + 0x -1 = 0

x²- 1 = 0

x² = 1

x = ±1

--------------

check

1² + 0x - 1 = 0

1 - 1 = 0

5 0

2 years ago

What is 0.125, 0.09 and 11 over 100 as percentages?

makvit [3.9K]

For decimals, move the decimal point 2 units to the right to get the percentage.
0.125 = 12.5%
0.09 = 9%

for fractions, if it is over 100, make it the percentage of the number
so for 11 over 100, it is 11%
for example, 50 over 100, it is 50%

if it is not over one hundred, divide the numerator to denominator to get a decimal, and then make it into a percentage
for example 11/35. 11 divided by 35 is 0.31
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that is just an example

hope this helps

8 0

3 years ago

Halloween Candy Halloween is Kelly's favorite holiday of the year! Based on experience, Kelly knows that on average, each house

LuckyWell [14K]

Using the normal distribution and the central limit theorem, it is found that there is an approximately 0% probability that the total number of candies Kelly will receive this year is smaller than last year.

Normal Probability Distribution

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

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

It 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, which is the percentile of X.
By the Central Limit Theorem, for n instances of a normal variable, the mean is $n\mu$ while the standard deviation is $s = \sigma\sqrt{n}$ .

In this problem:

Mean of 4 candies, hence $\mu = 4$ .
Standard deviation of 1.5 candies, hence $\sigma = 1.5$ .
She visited 35 houses, hence $n = 35, \mu = 35(4) = 140, s = 1.5\sqrt{4} = 3$