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Paul [167]
3 years ago
15

Help needed !! thanks :)

Mathematics
2 answers:
Nataly [62]3 years ago
8 0
First you multiply 6 and 14 then you subtract
Helen [10]3 years ago
8 0

Answer:

Addition

Step-by-step explanation:

She will use <u>First Addition</u>

6p - 12 = 72

6p = 72 + 12

6p = 84

Now, She will use <u>Division</u>

6p = 84

p = 84 ÷ 6

p = 14

<u>-TheUnknown</u><u>Scientist</u>

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What’s the sequence?
Troyanec [42]

Answer:

see explanation

Step-by-step explanation:

Note that the difference between consecutive terms is - 8

To obtain the next term in the sequence subtract 8 from the previous term.

next term = 56 - 8 = 48

The sequence is 72, 64, 56, 48

3 0
3 years ago
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
he temperature at noon on a winter day was 2 °F. By 6 p.m., the temperature had dropped to −9 °F. Write a subtraction expression
nydimaria [60]

Based on the starting temperature and the new temperature, the relevant expression would be<u> 2 - (-9) </u>

To find the number of degrees the temperature has changed by, use the following equation:

<em>= Starting temperature - Current temperature </em>

Starting temperature = 2°F

Current temperature = -9°F

The equation becomes:

<em>= 2 - (-9)</em>

In conclusion, the expression would be 2 - (-9)

<em>Find out more on </em><em>expressions </em><em>at brainly.com/question/945593. </em>

5 0
2 years ago
HELP ASAP PLSSSSSSSSSSSS
ludmilkaskok [199]

Answer:

f = .39

Step-by-step explanation:

d (v) = 2.15 v^2 / (64.4 f)

v = 40

d = 138

substitute these in

138 = 2.15 (40)^2 / (64.4 *f)

simplify

138 = 2.15 (*1600) / (64.4 *f)

138 = 3440 / (64.4 *f)

multiply each side by 64.4f

138 * 64.4 f = 3440

8887.2 f = 3440

divide by 8887.2

8887.2 f /8887.2= 3440/8887.2

f=.38707

to the nearest hundredth

f = .39

8 0
3 years ago
Read 2 more answers
What is the range of the function f(x) = 3x^2 + 6x - 8?
Airida [17]

R; all quadratic functions are going to have ranges and domains of *ALL REAL NUMBERS*.

3 0
3 years ago
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