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omeli [17]
3 years ago
12

Plz help I’ll give u brainliest

Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer:

9

Step-by-step explanation:

All you have to do is subtract the temperatures once you get the final answer for them.

4 days, -7°C, = 43<em>°C</em>

5 days, -6°C, = 34<em>°C</em>

<em>43 - 34 = 9</em>

<em>9°C</em> = 9

<u><em>~ LadyBrain</em></u>

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A set of data with a mean of 53, and a standard deviation of 6.2 is normally distributed. Find the value of a data point that is
Evgesh-ka [11]

The value of a data point that is -2 standard deviations from the mean

so, 40.6 to 65.4.

<h3>What is the empirical rule?</h3>

According to the empirical rule, also known as the 68-95-99.7 rule, the percentage of values that lie within an interval with 68%, 95%, and 99.7% of the values lies within one, two, or three standard deviations of the mean of the distribution.

P(\mu - \sigma < X < \mu + \sigma)  \approx 68\%\\P(\mu - 2\sigma < X < \mu + 2\sigma)  \approx 95\%\\P(\mu - 3\sigma < X < \mu + 3\sigma)  \approx 99.7\%

From the empirical rule, we know that for 95% we are in 2 standard deviations of the mean. so:

= 53- 6.2- 6.2

= 40.6

The value of a data point that is -2 standard deviations from the mean

53 + 6.2 + 6.2

= 65.4

Learn more about the empirical rule here:

brainly.com/question/13676793

#SPJ2

7 0
2 years ago
What is the value of x <br> (X+40) (3x) <br> A. 20<br> B. 35<br> C. 60<br> D. 70
shtirl [24]

Answer: A. 20 is the answer.

Step-by-step explanation:

x+40 = 3x

or, 40 = 3x-x

or, 2x = 40

or, x = 40/2

so, x = 20

4 0
3 years ago
Andrew is evaluating his current financial position by totaling his monthly cash inflows and outflows. His cash inflows each mon
jeka57 [31]

Answer:

Andrew has $15 left over each month

Step-by-step explanation:

Inflows=$240+$60=$300/mo.

Outflows=$170+$70+45=$285/mo.

Inflows-Outflows=left over

$300-$285=$15

8 0
3 years ago
How many years will it take for 20 to grow into 100$ if the simple interest rate is 4% annually?
Rudik [331]
25.8 that's what I got hope I could help
6 0
3 years ago
Read 2 more answers
What is the inverse of the given equation y=7x^2-3?
NARA [144]

Answer:

The inverse of this equation would be y = \sqrt{\frac{x - 3}{7} }

Step-by-step explanation:

To find the inverse of any equation, start by switching the y and x values. Then solve for the new y value. That equation will be your inverse.

y = 7x^2 - 3

x = 7y^2 - 3

x + 3 = 7y^2

\frac{x-3}{7} = y^2

\sqrt{\frac{x - 3}{7} } = y

5 0
3 years ago
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