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Sindrei [870]
3 years ago
11

Helppp!!!! This is due tomorrow

Mathematics
1 answer:
Andreyy893 years ago
4 0
-6 + x/4 = -5
First, you need to combine like terms.

x/4 = 1
now, you need to isolate the variable, so multiply both sides by four.

you get
x = 4
Hope this helps!!
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For a field trip 20 students rode in cars and the rest filled 5 busses. How many students were in each bus if 210 students were
xeze [42]
First do 210 - 20 = 190
Then do 190/5 = 38
38 people per bus is the answer!!!!
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10. Use the properties of exponents to simplify the expression:
aivan3 [116]
<h3><u>Answer</u> :</h3>

\bigstar\:\boxed{\bf{\purple{x^{\frac{m}{n}}}=\orange{(\sqrt[n]{x})^m}}}

Let's solve !

:\implies\sf\:25^{\frac{3}{2}}

:\implies\sf\:(\sqrt[2]{25})^3

:\implies\sf\:5^3

:\implies\boxed{\bf{\red{125}}}

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25 POINTS AND BRAINLIEST IF ANSWERED CORRECTLY!
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A research study investigated differences between male and female students. Based on the study results, we can assume the popula
garri49 [273]

Using the <u>normal distribution and the central limit theorem</u>, it is found that the interval that contains 99.44% of the sample means for male students is (3.4, 3.6).

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, the sampling distribution of sample means of size n has standard deviation s = \frac{\sigma}{\sqrt{n}}.

In this problem:

  • The mean is of \mu = 3.5.
  • The standard deviation is of \sigma = 0.5.
  • Sample of 100, hence n = 100, s = \frac{0.5}{\sqrt{100}} = 0.05

The interval that contains 95.44% of the sample means for male students is <u>between Z = -2 and Z = 2</u>, as the subtraction of their p-values is 0.9544, hence:

Z = -2:

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

By the Central Limit Theorem

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

-2 = \frac{X - 3.5}{0.05}

X - 3.5 = -0.1

X = 3.4

Z = 2:

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

2 = \frac{X - 3.5}{0.05}

X - 3.5 = 0.1

X = 3.6

The interval that contains 99.44% of the sample means for male students is (3.4, 3.6).

You can learn more about the <u>normal distribution and the central limit theorem</u> at brainly.com/question/24663213

7 0
2 years ago
What is true about all points on the y-axis in Quadrant I?
Eva8 [605]

Answer:

All have an x-coordinate of 0.

and

All are directly above the origin.

These answers are correct

Step-by-step explanation:

i did the quiz/or/assignment

6 0
3 years ago
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