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laiz
2 months ago
7

The table shows information about the numbers of hours 30 children spent on their tablets one evening. a) find the class interva

l that contains the median. B)work out an estimate for the mean number of hours

Mathematics
2 answers:
tester [12.3K]2 months ago
8 0
a) The class interval that contains the median is 20<h b="" the="" median="" estimate="" is="" hrs.="" for="" part="" a="" we="" determine="" class="" interval="" indicating="" median.="" total="" frequency="" is:="" here="" find="" corresponds="" to="" middle="" point="" which="" value.="" summing="" from="" top="" yields="" cumulative="" frequencies="" elevated="" or="" beyond="" indeed="" similarly="" adding="" bottom="" corroborates="" this.="" representing="" grouped="" data="" requires="" using="" midpoint="" class.="" />
PIT_PIT [12.4K]2 months ago
6 0
In part b), the outcome is 2.2.
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Name the value of each 2 in 222,222
Inessa [12570]

<span><span><span>the leftmost underlined 2 in 222,222 occupies the hundred-thousands place (two hundred thousand)</span></span></span>

<span><span><span />the next underlined 2 in 222,222 is in the ten-thousands place (twenty thousand)</span></span>

<span><span />the underlined 2 in 222,222 sits in the thousands place (two thousand)</span>

<span /><span>the underlined 2 in 222,222 is in the hundreds place (two hundred)</span>

<span>the underlined 2 in 222,222 is in the tens place (twenty)</span>

<span>the final underlined 2 in 222,222 is in the ones place (two)
</span>

8 0
1 month ago
Read 2 more answers
Part A: Solve the equation 5(x + 2) = 6x + 3x − 14, and show your work. (5 points)
Leona [12618]

Answer:

x=8

Step-by-step explanation:

5(x+2)=6x+3x-14

This expands to 5x+10=6x+3x-14. using distributive property.

Adding up like terms gives: 10+14=8x-5x.

This simplifies to 24=3x. Here we apply addition and subtraction property.

By dividing both sides by 3, we find: 24/3 = 3x/3. This is the division property in action.

Thus, x equals 8.

> x = 8

5 0
2 months ago
Read 2 more answers
Which equation represents a proportional relationship that has a constant of proportionality equal to –10? y = x minus 10 y = x/
PIT_PIT [12445]

Response:

y=-10x

Detailed explanation:

y=-10x

y/x=-10

6 0
1 month ago
About ten percent of users do not close Windows properly. Suppose that Windows is installed in a public library that is used by
lawyer [12517]

Answer:

Refer to the explanation

Step-by-step explanation:

As approximately 10% of users fail to close Windows properly, we determine:

  • The likelihood that a user neglects to shut down Windows correctly is p=0.1;
  • The likelihood that a user shuts the Windows properly is q=1-p=1-0.1=0.9.

A. On average,

  • one in ten users does not close Windows correctly;
  • 10 out of 100 users fail to close Windows correctly.

B. The likelihood that precisely 8 out of the next 10 users will close Windows correctly is

C^{10}_8\cdot q^{8}p^{10-8}=\dfrac{10!}{8!(10-8)!}\cdot (0.9)^8\cdot (0.1)^2=45\cdot (0.9)^8\cdot (0.1)^2\approx 0.1937

6 0
3 months ago
Which number can each term of the equation be multiplied by to eliminate the fractions before solving? m – negative StartFractio
zzz [12365]

Answer: To remove fractions prior to solving, each term in the equation must be multiplied by 4.

Step-by-step explanation:

Consider the given expression:

-\frac{3}{4}m-\frac{1}{2}=2+\frac{1}{4}m

It is essential to simplify this before attempting to solve it.

Since the denominators differ, identifying the Least Common Denominator (LCD) is necessary.

Break down the denominators into their prime components:

4=2*2=2^2\\2=2

Select 2^2, as it possesses the greatest exponent. Thus:

LCD=2^2=4

Ultimately, to remove the fractions before solving, multiply both sides by 4:

(4)(-\frac{3}{4}m)-(4)(\frac{1}{2})=(4)(2)+(4)(\frac{1}{4}m)\\\\-3m-2=8+m

7 0
2 months ago
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