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3 years ago

4.

Mathematics

1 answer:

statuscvo [17]3 years ago

4 0

Part A)

His sample only involves days during the summer (if Devin is in the northern hemisphere), which would mean that the high temperatures he'll record are likely to be higher than the average. Therefore, the sample mean he computes does not represent the average high temperature for the whole year.

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Part B)

To correct his mistake, he needs to sample every day of the year. Or he could sample a few days of each month (say the first ten days of each month). That way the entire year is better represented. The other seasons of spring, fall and winter are included now.

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Fill in the blanks with two rational numbers (other than 1 and −1).

MA_775_DIABLO [31]

Answer:

2 and 20

Step-by-step explanation:

First how can we get rid of the fraction?

We can multiply -1/2 by 2 to get -1

Next what number do we multiply to get from -1 to -20?

-1x = -20

divide both sides by -1

x = 20

please give thanks by clicking the heart :)

7 0

2 years ago

tickets of a program at college cost $4 for general admission or $3 with a student ID. if 180 people paid to see a performance a

Licemer1 [7]

Answer:

75 general

105 student ID

Step-by-step explanation:

(it's a system)

4x+3y=615

x+y=180

(system as well)

4x+3y=615

x=180-y

4(180-y)+3y=615

720-4y+3y=615

-y=-105

y=105

x+105=180

x=180-105

x=75

7 0

3 years ago

HELP PLESSE ITS MULTIPLE CHOICE

Andrew [12]

Answer:

<h2>Letter A</h2>

Step-by-step explanation:

First of all, we have to solve all the equations

First one is (4*1)-6

We have to use PEMDAS

which stands for

Parenthesis

Exponents

Multiplication

Divison

Addition

Subtraction

In (4*1)-6

You have to do 4*1 first ~ which equals 4

the next step would be 4-6 ~ which equals -2

The next equation would be (1*4)-6

First do 1*4 ~ which is 4

Next 4-6 ~ which again equals -2

Next equation is (1*6)-(4-6)

Parenthesis first, 1*6=6

4-6=-2

6-(-2)

which equals 8

Our next equation is 6-(1*4)

1*4=4

6-4~ which equals 2

Our last equation is 4*(1-6)

Parenthesis comes first, so it would be 1-6 first

which equals -5

4*(-5) would be our final step ~ which equals -20

All of our answers would be

-2 - from the top equation

-2 - from letter A

8 - from letter B

2 - from letter C

-20 - from letter D

which means Letter A is the answer.

Hope this is helpful.

5 0

2 years ago

15 POINTS AND WILL MARK BRAINLIEST Help?? Pleasee

Rom4ik [11]

The experimental probability is calculated based on the results of the experiment; since the name Ted was chosen 26 times out of 123, the experimental probability is $\boxed{\frac{26}{123}}.$

Typically, the theoretical probability assumes that events are chosen randomly; since the name Ted is one of the 6 in the hat, the theoretical probability is $\boxed{\frac{1}{6}}.$

If we increased the number of names in the hat, we would expect both the experimental and theoretical probability to decrease, since there are now more names to choose from. Similarly, if we decreased the number of names in the hat, the experimental and theoretical probability would increase.

6 0

3 years ago

Can someone please help me with this?

Svet_ta [14]

Increasing: (-4,-4)
Decreasing: (4,-2)

3 0

3 years ago