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rjkz [21]
4 years ago
5

How do you model a math problem such as 0.3x0.4

Mathematics
1 answer:
STatiana [176]4 years ago
7 0
You draw place value blocks to compare the decimals together.

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Eva is showing her work in simplifying (7.3 − 7.2) − 3.8 + 3.7. In which step did Eva make an error?
I am Lyosha [343]

Answer:

She made the mistake in step 2 when she applied the commutative property. That was unnecessary

5 0
3 years ago
What is the distance between (-6. 2) and (8.10) on a coordinate grid?
nalin [4]

Answer:

The distance between 2 points is 16.1 units.

Step-by-step explanation:

You have to apply distance formula using coordinates,

distance =  \sqrt{ {(x2 - x1)}^{2} +  {(y2 - y1)}^{2}  }

Let (x1,y1) be (-6,2),

Let (x2,y2) be (8,10)

distance =  \sqrt{ {(8  - ( - 6))}^{2}  +  {(10 - 2)}^{2} }

distance =  \sqrt{196 + 64}

distance =  \sqrt{260}

distance = 2 \sqrt{65}

distance = 16.1 \: units \: (3s.f)

7 0
3 years ago
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
Eight balls numbered from 1 to 8 are placed in an urn. One ball is selected at random. Find the probability that it is
elena-14-01-66 [18.8K]

Answer:

\frac{7}{8}

Step-by-step explanation:

6 0
4 years ago
Simplifying Radicals: √200. show work. please and thank you!
Tema [17]
Simplify Radicals of √200

Rewrite 200 as 10² *2

Factor 100 out of 200
√100(2)
Rewrite 100 as 10²
Pull terms out from under the radical.
10√2 

The result can be written in both exact and decimal forms.
Exact Form
10√2 is your Answer
Decimal Form
14.14213562....

3 0
4 years ago
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