Mathematics High School

one of these students is chosen at random. what is the probability of picking a student who scored above 65​

One Of These Students Is Chosen At Random. What Is The Probability Of Picking A Student Who Scored Above

Answers

Answer 1

Answer:

7/18

Step-by-step explanation:

7 students received a score greater than 65, out of a total of 18 students

Answer 2

The probability of picking a student who scored above 65 is 1/3 when one of these students is chosen at random.

To calculate the probability of picking a student who scored above 65, we need to determine the number of students who scored above 65 and divide it by the total number of students.

Looking at the given marks:

46, 65, 54, 57, 62, 73, 73, 47, 69, 48, 63, 68, 55, 48, 58, 71, 76, 70

We can see that the marks above 65 are: 73, 73, 69, 68, 76, 70 (a total of 6 marks).

Now, let's calculate the probability:

Probability = Number of favorable outcomes / Total number of outcomes

Number of favorable outcomes (students who scored above 65) = 6

Total number of outcomes (total number of students) = 18

Probability = 6 / 18

Simplifying the fraction:

Probability = 1 / 3

Therefore, the probability of picking a student who scored above 65 is 1/3.

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The complete question is :

Here are the marks 18 students got in a Maths test: 46, 65, 54, 57, 62, 73, 73, 47, 69, 48, 63, 68, 55, 48, 58, 71, 76, 70. a) Show this information in an ordered stem and leaf diagram: 5 | 4 4 7 8 8 6 | 2 3 5 8 7 | 0 1 3 3 8 | 9 | 6 b) One of these students is chosen at random: What is the probability of picking a student who scored above 65?

Related Questions

When the puppy turned 12 months old it weighed 19.6

Answers

Answer:

#&*#*#

Step-by-step explanation:

what typa dog is it???

Hii, the picture attached has the question!
If you can, can you explain how you got the answer too

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21, 42, and 63. Find the multiples of each of the two numbers and find the ones that match with each other, simple as that
21, 43, and 62.......

Can someone solve this?
25^2x-3=125^x+1

Answers

Answer:

im not so sure but here what i got

Step-by-step explanation:

(252)(x)−3=125x+1

125x=625x−4

25^2 * (X-3) = 125^X + 1
125 * (X-3) = 125^X + 1

The total cost of making a daily taco special for a restaurant is represented by the function C (t) = 2.5t + 1 , where t is the number of tacos made. How does the total cost change for every taco special the food truck makes?
A. The total cost increases by $1.
B. The total cost increases by $2.50.
C. The total cost decreases by $1.
D. The total cost decreases by $2.50.

Answers

Answer:

C. The total cost increases by $2.50

Step-by-step explanation:

This is because 1 dollar is constent--- you will always have 1 dollar.

However 2.5 is the change, you have to times a number to get the answer.

EX:

(t) = 2.5t + 1

(4) = 2.5( 4) + 1 ----- plug in 4 for t

= 10 +1

= 11

The is the multiplyer or change is the 2.5t

and when you graph it it will almost always be the slope of the line.

un adulto cuya masa de 8kg camina con una rapidez de 130 cm/s​

Answers

Answer:

if you need distance then

Step-by-step explanation:

speed = distance /time

so

135=x/8

135x8=x

1080=x = distance

Which of the following represents the independent variable of the function?

y=1/2x-2

A. 1/2

B. x

C. y

D. -2​

Answers

Answer:

X is the independent variable

Step-by-step explanation:

I just know

X is the independent variable that represents the independent variable of the function.

What are independent and dependent variables?

Even though everything can be almost always related to its reason, when we talk about two related things, there might happen that one of those things is dependent on other.

If a variable is taking its values independently of any visible direct cause, then that variable is called independent variable.

We are given an expression as y=1/2x-2

Here we can see the variables x and y .

the y intercept is -2.

The slope of the equation is 1/2.

Therefore, we can conclude that the X is the independent variable.

Learn more about independent variable;

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1. Find the maximum and minimum values of z = 2x + 3y subject to the following constraints
[tex]0 \leqslant x \leqslant 7[/tex]
[tex]y \geqslant 1[/tex]
[tex]2x - y \geqslant - 5[/tex]
[tex]x + y \leqslant 11[/tex]
Copy and paste the text below and put your answers into the blanks. maximum value =
when x =
and y =
minimum value =
when x =
and y=​

Answers

Answer:

Minimum Values:

x = 0, y = 1, z = 3

Maximum Values:

x = 7 , y = 11 , z = 47

Step-by-step explanation:

FOR MINIMUM VALUES:

0<= x <= 7

It is clear from the above inequality that the minimum value of x must be 0.

y>= 1

This inequality shows that the minimum value of y must be 1. Using these minimum values of x and y to get the minimum value of z:

z = 2x + 3y

z = (2)(0) + (3)(1)

z = 3 (Minimum)

FOR MAXIMUM VALUES:

0<= x <= 7

It is clear from the above inequality that the maximum value of x must be 7.

x + y <= 11

To calculate maximum value of y we can use the minimum value of x in this inequality:

0 + y <= 11

y <= 11

Hence, the maximum value of y is 11.

Using these maximum values of x and y to get the maximum value of z:

z = 2x + 3y

z = (2)(7) + (3)(11)

z = 47 (Maximum)

HUrRiCAn KatrINa?? MORe liKE?

Answers

Answer:

Step-by-step explanation:

HUrRiCAn PepiNa

3(2x+1)+2(x-4)
Helpppp

Answers

Answer:

8x+9

Step-by-step explanation:

3(2x+1)+2(x+4)

6x+1+2x+8

8x+9

Answer:

8x-5

Step-by-step explanation:

6x+3+2x-8

You just have to add like values together.

There are 12 inches in 1 foot. How many inches are in 12 feet?

Answers

Answer:

there are 144 inches in 12 feet.

Answer:

There are 144 inches in 12 feet.

at a summer camp there is one counselor for every 5 campers.

Answers

Answer:

Then if there were 10 campers, there would be 5 counselors

Step-by-step explanation:

For every five campers, there is one counselor. Divide the number of campers by 2 two find how many counselors there are.

I have two bags of counters.
The first bag contains two red counters and one blue counter.
The second bag contains one red counter, one blue counter
and two yellow counters.
I take a counter at random from both bags.
b) What is the probability that exactly one of the counters will be red?
Answer as a fraction

Answers

Answer:

7/12 chances of it being red

Step-by-step explanation:

Hope this helped! :)

Please help me! I need to graph this equation but I don't exactly know how.

Answers

Answer:

There would be a y-intercept of one and a slope of -3/4.

Step-by-step explanation:

Negative slope means it will increase going left.

3/4 is the slope 3 rise/ 4 run

the y intercept is 1, so the line will cross the y axis at the 1 point.

Carmen runs 6 miles in 50 minutes. At the same rate, how many miles would she run in 35 minutes?

Answers

Answer:

4.2 miles

Step-by-step explanation:

6 miles/50 minutes = x miles/35 minutes

1. Since 5 is the GCF (greatest common factor) of x and 35, that is what the ratio must first be converted into, by dividing by 10: 6/50 = 0.6/5

2. To convert this to 35 minutes, it must be multiplied by 7, because 5 * 7 = 35. This leaves us with the answer:

0.6/5 = 4.2 miles/35 minutes

Hamburger meat sells for $6 for every 3 pounds. If Alicia buys 10 pounds of hamburger meat, how much will she pay hamburger meat sells for $6 for every 3 pounds.

Answers

the correct answer will be $20
She'll pay 20$. If the meat is 6$ for every three pounds and she is trying to buy ten pounds, she's going to be purchasing at least nine pounds of the meat. 3x3=9, so 6x3=18. After that she'd still have a pound to pay for. In this case we divide. 3/3=1, so 6/3=2. One pound of meat is equal to 2$. Add 18$ and 2$ and you get 20$

Si 8 mesas cuestan $ 600, ¿cuál es el costo de 28 mesas?​

Answers

Answer:

2100

Step-by-step explanation:

Yo ya se

What is the range of the function on the graph?

Answers

Answer:

y ≤ 3 or -∞ < y < 3

Step-by-step explanation:

domain exists when y is less than or equal to 3

WILL GIVE BRILLIANTIEST!
A small town voted to decide if a road should be expanded from two lanes to four lanes. The two-way table below shows the
results of the vote.
Favor
Oppose
Neutral
Total
33
12
46
91
45
15
36
96
Age
18-25
Age
26-40
Age
40+
Total
10
29
24
63
88
56
106
250
Which correlation does the two-way table suggest?
A Voters age 40 and over are least likely to favor road expansion.
B. The majority of the voters are most likely to favor road expansion
c. Voters between the ages of 26 and 40 are most likely to oppose road expansion
D.
Voters between the ages of 18 and 25 are least likely to favor road expansion

Answers

Answer:

the answer is D because it makes the most sense

Answer:

A.......,..............

Help that’s it just help I’ll give brainiest

Answers

Answer:

1725 ft^2

Step-by-step explanation:

[tex]\frac{b_{1} + b_{2}}{2} (h) = \frac{65 + 50}{2} (30) = \frac{115}{2} (30) = 57.5(30) = 1725[/tex]

Brainliest would be appreciated!

ANSWER QUICK PLS Expand the expression: -11 (3c - 2d) using the Distributive Property

Answers

-11.3c-11.2d= -11.1cd

In a bouquet of flowers, there are 16 irises and 29 sunflowers. Write the ratio of sunflowers to irises in 3 different way

Answers

Answer:

29:16

29 To 16

29/16

are n/4 and 25n/4 coterminal angles

Answers

yes they are coterminal angles..i hope this helps you

I NEED HELP ASAP!!!!!!!

Answers

Answer:

9/25 = 36%

Step-by-step explanation:

First add up all of the students (150)

Then divide 54 by 150, 0.36

0.36 = 36% = 9/25

Which of the following is equivalent to 8?
3 to the power of 2
2 to the power of 4
2 to the power of 3
4 to the power of 2

Answers

I know this was already answered but I worked them out for you just in case.

Finding missing angles

Answers

There’s no picture thanks for the points tho

thank for the pint but what is the qestion

Help please ASAP!!!!

Answers

Q,Z,X, and R
I think
I’m pretty sure that’s right but not 100% positive

(Blank)% of 600,000= 120,000

I need to know what blank is​

Answers

Answer:

20%

Step-by-step explanation:

Hope this helps!!!

Solve this system of equations
y=7x+5
y=x+17

Answers

Answer:

(x, y) = (2, 19)

Step-by-step explanation:

7x + 5=x + 17

x=2

y=7*2+5

y=19

Please give brainlyist

Answer: (2, 19)

Step-by-step explanation:

There are three general ways to solve a system of equations:

- Substitution

- Elimination

- Augmented Matric

Since both given equations all have y isolated, substituting the value of y will be the most appropriate way here.

--------------------------------------------------------------------------------------------------------

Given

y=7x+5

y=x+17

Substitute y into the equations

7x+5=x+17

Subtract 17 on both sides

7x+5-17=x+17-17

7x-12=x

Subtract 7x on both sides

7x-12-7x=x-7x

-12=-6x

Divide -6 on both sides

-12/-6=-6x/-6

x=2

Substitute  value into one of the equations

y=x+17

y=2+17

y=19

(2, 19)

Hope this helps!!

Please let me know if you have any questions

Twelve pounds of beans are distributed equally into 9 bags to give out at the food bank.

How many pounds of beans are in each bag?

Enter your answer in the simplest form.

There are pounds of beans in each bag.

Answers

Answer:

1.33 or 1 1/3 pounds

Step-by-step explanation:

12 ÷ 9 = 1.33

What’s measure angle K ?

Answers

Answer:

angle K = 180 - 128 = 52 degrees

Step-by-step explanation:

The sum of all angles in a triangle will always add up to 180°. So, because the two triangles are identical, you can do 180-46-82, and get your answer, which is 52°. Have a nice day!
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