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umka21 [38]
3 years ago
9

Help plz will give 25 points

Mathematics
1 answer:
Arisa [49]3 years ago
8 0

Answer: 39

Step-by-step explanation:

SInce the problem asks for the expression when a=2 and d=5, you olug in the values of a and d and solve.

(5)²+3(2)+6+(2)                 [exponent]

25+3(2)+6+2                     [multiply]

25+6+6+2                          [add]

39

After plugging in a=2 and d=5, we got 39 as our answer.

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See image for question.​
kotegsom [21]

Answer:

<h3>#7</h3>

(a)

<u>Sample space:</u>

  • 1*1, 1*2, 1*3, 1*4,
  • 2*1, 2*2, 2*3, 2*4,
  • 3*1, 3*2, 3*3, 3*4,
  • 4*1, 4*2, 4*3, 4*4

Total 16 outcomes

(b)

  • (i) P(even) = 12/16 = 3/4
  • (ii) P(3x) = 7/16
  • (iii) P(perfect square) = 4/16 = 1/4
<h3>#8</h3>

(a) <u>Sample space:</u>

  • 1T, 1H, 2T, 2H, 3T, 3H, 4T, 4H

Total 8 outcomes

(b)

(i) 1T, 3T

  • P(T and odd) = 2/8 = 1/4

(ii) 1H, 4H

  • P(H and square) = 2/8 = 1/4

(iii) 1H, 2H, 3H, 4H

  • P(H) = 4/8 = 1/2

6 0
3 years ago
Use technology and the given confidence level and sample data to find the confidence interval for the population mean mu . assum
attashe74 [19]

To solve for the confidence interval for the population mean mu, we can use the formula:

Confidence interval = x ± z * s / sqrt (n)

where x is the sample mean, s is the standard deviation, and n is the sample size

 

At 95% confidence level, the value of z is equivalent to:

z = 1.96

 

Therefore substituting the given values into the equation:

Confidence interval = 3 ± 1.96 * 5.8 / sqrt (51)

Confidence interval = 3 ± 1.59

Confidence interval = 1.41, 4.59

 

Therefore the population mean mu has an approximate range or confidence interval from 1.41 kg to 4.59 kg.

6 0
3 years ago
Which of the following statistics about college graduates is not true?
Crazy boy [7]
The statistic about college graduates which is not true is that C. they can earn nearly double the income of high school graduates.
They cannot earn that much really - even though they have a college degree, there are many jobs that don't require a degree which also pay a lot.
6 0
2 years ago
Read 2 more answers
Please help :) i really need your help right now thank you
Nastasia [14]

The first one and the last one, the 2 middle ones are not corresponding

5 0
3 years ago
Which graph shows the solution to this system of inequalities?<br> y &lt; 2x + 4<br> y &gt; -X -3
Arturiano [62]

Answer:

The answer is Graph X.

  • Always start by isolating the variable \color{red}y on the left side of the inequality.
  • Change the inequality to equality symbol.
  • Graph the boundary line from step 2 in the XY-plane.
  • The last step is to shade one side or region of the boundary line.

Please Mark Brainliest If This Helped!

3 0
2 years ago
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