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Olenka [21]
3 years ago
13

Is the sequence arithmetic? 15, 14.5, 14, 13.5, 13,… If so, give the common difference.

Mathematics
2 answers:
scZoUnD [109]3 years ago
8 0
The common difference is -0.5
Oksanka [162]3 years ago
4 0
Your subtracting .5 I think. hope this helps
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Please Solve and explain how to find the surface area of these triangular prisms
BARSIC [14]
<span>I think these are the right answers.
</span>
<span>---------------------------------------------------------------------------

For the first one:

The volume of the triangular prism is: 1030.25cm
The surface area of the triangular prism is:</span><span> 696.95cm

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For the second one:
</span>
T<span><span>he volume of the triangular prism is: 42cm
</span>The surface area of the triangular prism is: 96cm</span>
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As for explaining how to find the volume of triangular prisms, use your G00GLE search engine and type "find the volume of triangular prism".

Enter in the data/numbers and it will calculate the answer along with step by step instructions on how it got the answer.

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Have a good day!!!





4 0
3 years ago
Americans receive an average of 20 Christmas cards each year. Suppose the number of Christmas cards is normally distributed with
soldier1979 [14.2K]

The distribution of X is X ~ N (20 , 6) and the probability that this American will receive no more than 24 Christmas cards this year is 0.7486.

<h3>Probability</h3>

a. Distribution

X ~ N (20 , 6)

b. P(x ≤24)

= P[(x - μ ) / σ  (24 - 20) / 6]

= P(z  ≤0.67)

=  0.74857

=0.7486

Hence:

Probability = 0.7486

c. P(21 < x < 26)

= P[(21 - 26)/ 6) < (x - μ  ) / σ   < (24 - 20) / 6) ]

= P(-0.83 < z < 0.67)

= P(z < 0.67) - P(z < -0.)

=  0.74857- 0.2033

= 0.54527

Hence:

Probability =0.54527

d. Using standard normal table ,

P(Z < z) = 66%

P(Z < 0.50) = 0.66

z = 0.50

Using z-score formula,

x = z×  σ +  μ

x = 0.50 × 6 + 20 = 23

23 Christmas cards

Therefore the distribution of X is X ~ N (20 , 6) and the probability that this American will receive no more than 24 Christmas cards this year is 0.7486.

Learn more about probability here:brainly.com/question/24756209

#SPJ1

8 0
2 years ago
Need help with a math question
irina1246 [14]

Answer: 27

Step-by-step explanation:

No. Of juniors: 8

Total students: 30

8/30 x 100 = 26.66

Rounds to (whole percent): 27

6 0
4 years ago
Read 2 more answers
utilizando la equivalencia indicada, resuelve el siguiente ejercicio: 1 pulgada = 2.54cm 4.2 cm = _____ pulgadas
Phoenix [80]
<span>Los 4.2 centímetros es equivalente a 1.6 pulgadas</span>
4 0
4 years ago
Please could someone help me with this
lina2011 [118]
A) 19

v = 5 + 7 x 2
v = 5 + 14
v = 19
———————
b) 8

35 = u + 9 x 3
35 = u + 27
8 = u
4 0
3 years ago
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