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3 years ago

Can you please help me

Mathematics

1 answer:

shepuryov [24]3 years ago

6 0

Answer:

i would say none of the above can i get brainlest

Step-by-step explanation:

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Question 1 of 4

matrenka [14]

Answer:

1) What is the average score of the student surveyed?

b. 52.5

2) What is the median of the student's surveyed?

52.5

3) How many students were surveyed?

20 students

Step-by-step explanation:

1) What is the average score of the student surveyed?

Average score of the student's been surveyed means we should calculate the mean of the above scores

The formula for Mean = Sum of the number of terms/ Number of terms

Number of terms = 20

Average(Mean score) =

25 + 30 + 35 + 40 + 40 + 45 + 45 + 50 + 50 + 50 + 55 + 55 + 55 + 60 + 60 + 65 + 65 + 70 + 75 + 80/20

= 1050/20

= 52.5

2) What is the median of the student's surveyed?

25, 30, 35, 40, 40, 45, 45, 50, 50, 50, 55, 55, 55, 60, 60, 65, 65, 70, 75, 80

From the above data, we can see that 20 students were surveyed. To find the Median, we find the sum of the 10th value and the 11th value and we divide by 2

Hence,

25, 30, 35, 40, 40, 45, 45, 50, 50,) 50, 55, (55, 55, 60, 60, 65, 65, 70, 75, 80

10th value = 50

11th value = 55

Median = 50 + 55/2

= 105/2

= 52.5

3) How many students were surveyed?

Counting the results of the survey, the number of students that were surveyed = 20 students

3 0

3 years ago

Solve for x: 5(x + 3) = 4(x − 3)

OLEGan [10]

Answer:

x = -27

Step-by-step explanation:

Step 1 :

Equation at the end of step 1 :

(5 • (x + 3)) - 4 • (x - 3) = 0

Step 2 :

Equation at the end of step 2 :

5 • (x + 3) - 4 • (x - 3) = 0

Step 3 :

Equation at the end of step 3 :

x + 27 = 0

Step 4 :

Solving a Single Variable Equation :

4.1 Solve : x+27 = 0

Subtract 27 from both sides of the equation :

x = -27

One solution was found :

x = -27

Processing ends successfully

plz mark me as brainliest :)

8 0

3 years ago

Read 2 more answers

Find all the zeros of the equation.<br><br> -3x^4 + 27x^2 + 1200 = 0

pickupchik [31]

-3x^4 + 27x^2 + 1200 = 0

factor out -3

-3(x^4 -9x^2 -400)=0

divide by -3

x^4 -9x^2 -400=0

(x^2-25) (x^+16) = 0

x^2-25=0 x^2+16=0

(x-5)(x+5)=0 x^2=-16

x=5 x=-5 x = 4i x=-4i

Answer: x=5 x=-5 x = 4i x=-4i

7 0

4 years ago

Read 2 more answers

The number of people afflicted with the common cold C in the winter months steadily decreased by 202 each year from 2005 until 2

bulgar [2K]

Answer:

$C(t)=-202t+12,073$

Step-by-step explanation:

Let t represent the number of years since 2005.

We have been given that the number of people afflicted with the common cold C in the winter months steadily decreased by 202 each year from 2005 until 2010.

The number of people decreased in t years would be $202t$ .

We are also told that in 2005, 12,073 people were afflicted. So 12,073 will be initial value.

We will represent our given information in an equation as $y=mx+b$ , where,

m = Slope of line,

b = The initial value.

Since the number of people afflicted with the common cold C in the winter months steadily decreased, so slope will be negative.

Substitute the given values:

$C(t)=-202t+12,073$

Therefore, our required equation would be $C(t)=-202t+12,073$ .

6 0

3 years ago

Classify each triangle by it angle and by its sides plz help me out

Greeley [361]

Answer:

scalene, acute

Step-by-step explanation:

plzz help mee e

A motor home starts across a lake. The lake is 7 miles long and it takes 0.5 hours to get across. What is the speed? Write a formulae and show a label.

6 0

3 years ago

Can you please help me​

Can you please help me