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sweet-ann [11.9K]
3 years ago
14

Add -3/8 + 5/4 Simplify your answer. Type a fraction or an interger.

Mathematics
2 answers:
sdas [7]3 years ago
7 0
Beautiful your answer is 7/8
Anton [14]3 years ago
5 0

5/4 - 3/8 = 5*2/4*2 - 3/8 = 10/8 - 3/8= 7/8

The final answer is 7/8 in fraction form. Notice the second step. It brings the 5/4 into eighths by multiplying 5*2 and 4*2. This is done so that the 3/8 and 5/4 have identical denominators.

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Listed below are the measured radiation emissions​ (in W/kg) corresponding to cell​ phones: A,​ B, C,​ D, E,​ F, G,​ H, I,​ J, a
Sophie [7]

Answer: a. Mean = 0.696364

b. Median = 0.64

c. Midrange = 0.895

d. There is no Mode

e. 2. The maximun data value is the most relevant statistic, because it is closest to the limit of 1.6W/kg and that cell should be avoided.

Step-by-step explanation:

a) Mean is an average number of the data set, calculated by the sum of all the value divided by the quantity of the set:

mean = \frac{0.75+0.22+1.23+0.64+0.54+0.24+0.81+1.57+0.29+1.02+0.35}{11}

mean = 0.696364

b) Median is the middle number in the list of numbers. In this case, since there are 11 elements in the set, the middle number is:

sorted numbers of the data set:

0.22 0.24 0.29 0.35 0.54 0.64 0.75 0.81 1.02 1.23 1.57

median = 0.64

c) Midrange is another type of average number. It is calculated as:

midrange = \frac{high+low}{2}

midrange = \frac{1.57+0.22}{2}

midrange = 0.895

d) Mode is the number that appears most often in the list of numbers. For this data set, each number appears only one time, so there is no mode.

Mode = 0

e) According to the question, cell phone radiation is dangerous when it is higher than 1.6W/kg. The cell phone with the maximum data value (1.57 W/kg) should be avoided, since it is too close to the limit described.

So, the measures of center are not the most important statistic to be observed but the maximum data value.

7 0
3 years ago
A study of injuries to in-line skaters used data from the National Electronic Injury Surveillance System, which collects data fr
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Answer:

(a)  One count is only 7, and the guidelines for using the large-sample method call for all counts to be at least 10.

Step-by-step explanation:

Attached is the solution to b and c

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she would need 166 boxes. there is a remainder of 1. one book wont fit in a box

6 0
3 years ago
Read 2 more answers
Evaluate the line integral, where c is the given curve. c y3 ds,
postnew [5]
Parameterizing \mathcal C by

\mathbf r(t)=(t^3,t)

with 0\le t\le2, we have

\mathrm ds=\|\mathbf r'(t)\|\,\mathrm dt=\sqrt{(3t^2)^2+1^2}\,\mathrm dt=\sqrt{9t^4+1}\,\mathrm dt

So

\displaystyle\int_{\mathcal C}y^3\,\mathrm ds=\int_{t=0}^{t=2}t^3\sqrt{9t^4+1}\,\mathrm dt
=\displaystyle\frac1{36}\int_0^236t^3\sqrt{9t^4+1}\,\mathrm dt
=\displaystyle\frac1{36}\int_{u=1}^{u=145}\sqrt u\,\mathrm du
=\dfrac{145^{3/2}-1}{54}
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Which of the following statements is the best definition of a triptych?
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It might be a. A painting on three panels. I am not sure, so don't blame me if I get it wrong.
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