Mathematics College

If the martes obtained by a student in fiue subjects are 15, 14, 20, 17 d 25, then the probability of getting marks more than or equal to 20 is

Answers

Answer 1

Answer:

P(marks ≥ 20) = 0.4

Step-by-step explanation:

Marks gotten by the 5 students are;

15, 14, 20, 17, 25

Marks more than or equal to 20 are 2 in number namely 20 and 25.

Thus, probability of getting marks more than or equal to 20 is;

P(marks ≥ 20) = 2/5

P(marks ≥ 20) = 0.4

Related Questions

Evaluate the numerical expression.

(25)2 × 100 ÷ 23 + [24 ÷ (13 – 5)] =

Answers

the answer to this I think would we 5068/23

The required simplified value of the given numerical expression is 223.39.

Given that,
To evaluate the numerical expression,

= (25)2 × 100 ÷ 23 + [24 ÷ (13 – 5)]

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
= (25)2 × 100 ÷ 23 + [24 ÷ (13 – 5)]
= 5000÷ 23 + [24 ÷8 ]
= 217.39 + 6
= 223.39

Thus, the required simplified value of the given numerical expression is 223.39.

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To make widgets, Buford rents a shop for $2950 a month and calculates the materials for each widget are $38. How many widgets can he make in a month for $12,000?

Answers

Answer: 238 widgets

Step-by-step explanation:

12000$ - 2950$ = 9050$

9050$/38$≈238 (widgets)

The required, Buford can make at most 238 widgets in a month for $12,000.

What are equation models?

The equation model is defined as the model of the given situation in the form of an equation using variables and constants.

Here,
Let's first calculate the total cost of making x widgets in a month.

The cost of materials for each widget is $38, so the total cost of materials for x widgets is 38x.

In addition to the cost of materials, Buford has to pay $2950 per month for rent. So the total cost of making x widgets in a month is,

C(x) = 2950 + 38x

We want to know how many widgets Buford can make in a month for $12,000. So we want to solve the equation,

C(x) = 12000

Substituting the expression for C(x), we get:

2950 + 38x = 12000

38x = 9050

x = 238.16

Buford cannot make a fraction of a widget, so he can make at most 238 widgets in a month for $12,000.

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complete each function table. Then state the Domain and range of the function.

Answers

Answer:

Answer b in the list of options

Step-by-step explanation:

f(x)= -54, -36, 9, 27

Domain = { -6, -4, 1, 3}

Range = { -54, -36, 9, 27}

Dina is making a logo and she decides to use a regular polygon. Each interior angle of the polygon measures 140°. what is the number of sides of this polygon?

Answers

Answer:

Number of sides = 360/ (180 -140)

Number of sides = 360/ 40

Number of sides = 9

Step-by-step explanation:

What is the smallest positive integer x such that 52 divides 98701 + x.

Answers

Answer: i think 46 im not sure tho

Step-by-step explanation:

g(x) = (x + 4)4(x − 9) At x = −4, the graph the x–axis. At x = 9, the graph the x–axis.

Answers

Answer:

First ones touches

second ones crosses

Step-by-step explanation:

Edge202

The graph of this function is a parabola which opens upward.

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

We have been given the following function:

g(x) = (x + 4)(x − 9)

The graph of this function is a parabola which opens upward and whose x-intercepts are:

x + 4 = 0

x = -4

x - 9= 0

x = 9

On the other hand, the y-intercept will be:

g(x) = (x + 4)(x − 9)

g(x) = (0 + 4) (0 − 9)

g(x) = -36

Hence, the graph of this parabola is attached below.

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Solve for x. Round to the nearest tenth. x =

Answers

9514 1404 393

Answer:

x ≈ 17.3

Step-by-step explanation:

The triangles are all similar, so the side lengths are proportional.

short side / hypotenuse = x/30 = 10/x

x² = 300 . . . . . . cross multiply

x = 10√3 . . . . . . take square root

x ≈ 17.3

There are 2 girls and 7 boys taking swimming lessons. The ratio that compares the number of girls taking swimming lessons to the total number of students taking swimming lessons can be written three different ways. Enter the three different ways .

I NEED HELP ASAP

Answers

Answer: 2:9, 2 to 9, 2/9

Answer:A ratio can be expressed in 3 different waysCross MultiplicationProportion½=/Proportionate 1:2= 4:8 1 to 2. 4 to 8.

The table below shows the distance Chris is located from his school at different times. Time (minutes) Distance (miles) 0 20 3 18 6 16 9 14 12 12 15 10 Assuming a linear relationship, how long will it take Chris to get to school? Hint: (0 miles is the same as the x-intercept)

Answers

Answer:

20 minutes

Step-by-step explanation:

x is 0 in the graph and y is 20

so 20 is your answer if 0 is x

find the value of this expression if x=1 and y=4

xy^2/7

Answers

xy^2/7 = (1)(4)^2/7 = 4^2/7 = 7 square root 4^2 = 7 square root 16 = 7 square root 4

Answer:

2 2/7

Step-by-step explanation:

What we know:

x = 1, and y = 4

The equation is xy^2/7

1(4)^2/7

4^2/7

16/7 = 2 2/7

3
4
5
I James Dove- Edwin
Brian bought 34 of ham from the grocery
store and lost of it once he left the
grocery store. How much ham from the
grocery store does Brian have left?

Answers

How many did he lose? Can you tell us how much he lost?

Which situation has a net result of zero?
The temperature was -9'F and fell 9°F.
Janet had $4 and gave $3 to her friend.
High tide was 5.5 ft and now low tide is -0.5 ft.
The hot-air balloon rose 539 feet. It then lost 539 feet of altitude.

Answers

Answer:

D. The hot-air balloon... results in a net of zero

Step-by-step explanation:

Thanks for the points my guy :)

have a great day

Answer:

canberry

Step-by-step explanation:

What is the total surface area please help

Answers

Answer:

167

Step-by-step explanation:

a third grader has a goal of solving 100 math facts in 5 minutes (or 300 seconds). how many seconds can he spend on each math fact? give unit rate in seconds per fact.

Answers

Answer:

1 fact per 3 seconds because you divide 300 by 100

Answer:

3 seconds/per fact

Step-by-step explanation:

300 divided by 100

= 3

Below is a distance with given lengths to help Cecil cross the tightrope. Find a way to get cecil cross the tightrope.Write your
solutions as numerical expressions. the length of the tightrope is 15 feet long the lengths are 2,6 and 8 feet. Explain why or why not you can use these lengths. PLEASE HELP WORTH A LOt OF POINTS

Answers

Answer: Yes, you can cross a tightrope with lengths of 2,6, and 8 feet.

Step-by-step explanation: the measurements add up to 16 feet, which is enough to cross.

Find −6.8−2.4. Write your answer as a decimal. −6.8−2.4=

Answers

Answer: -9.2

Step-by-step explanation:

Imagine you are adding the numbers 6.8 + 2.4. Eight plus four equals twelve; after carrying the one, we add one plus six plus two, which equals nine. After that, add the negative sign in front.

Your answer will be -9.2

a study was conducted at a large hospital to determine whether there was a relationship between numbers

Answers

Step-by-step explanation:

study was conducted at a large hospital to determine whether there was a relationship between the

ntunber of years that nurses were employed and the number of nurses who voluntarily resign

Which diagram could be used to prove (triangle) ACB ~ (triangle) DEC using similarity transformations?

My picture includes all 4 options

A C
B D

Like that hope it’s understandable...

Answers

Answer:

C because a b and d do not show any similaritys

PRE CALC QUESTION, PLEASE HELP

Answers

for applies= associative and distributive
and for doesnt apply = commutative.

im not 100 sure for the distributive answer but ik the other ones are right

ABCD with vertices A(1’5), B(3. 5), c(4. 1) and D(2,1).
5. What is the area of ABCD? Round to the nearest hundredth if necessary
6. What is the perimeter of ABCD? Round to the nearest hundredth if necessary.

Answers

Answer:

uwu0cwe

Step-by-step explanation:

Your iPod has 3 hours of battery remaining . If it has 15 hours when fully charged what percent charged is it right now ?

Answers

35% left if that’s not it show me the options

f(0) = 3 - 2x. What does f(0) equal?

Answers

based on X values ,and do calculation

3-2(0) = 3-0= 3
Answer is 3.

WILL GIVE BRAINLIEST IF CORRECT!!

How many different 7-digit positive integers exist? (Note that we don't allow "7-digit" integers that start with 0, such as 0123456; this is actually a 6-digit integer.)

Answers

Answer:

There are 9,000,000 seven-digit positive integers.

Explanation:

For the first digit, we have 9 choices: 1, 2, 3, 4, 5, 6, 7, 8, 9.

For each remaining digit, we have 10 choices: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

Each choice is independent of the others. So, the number of total 7-digit positive integers is the product of all the numbers of choices for each digit.

hope it helps

need brainliest......

Since 0 cannot be put as the first digit, there are 9 choices for the first digit, and the next 6 digits have 10 choices. So, there are 9 × 10^6 = 9000,000 numbers.

5- 2x to the power of two = -15
what is x

Answers

there are two answers
x= the square root of 10.
x= the negative square root of 10

5 - 2x^2 = -15

=> - 2x^2 = -15 -5

=> - 2x^2 = -20

=> x^2 = -20/-2

=> x^2 = 10

=> x = √10

=> x = 3.1622..........

what value of x makes the equation 4(5-7x)=6-12x true?

Answers

Answer:

x= 7 /8

Step-by-step explanation:

Have a great day/night.

Ask me if you have more questions

Plz, help me!!

You have just been hired as New York’s premier Real Estate Agent! In your company, you will make a 7% commission. The real estate market in New York is booming! As the realtor calculates your potential commission if you sell the property for list price.
If the listing price for Candy Cane Creek is $864, 550, how much commission would you receive?

Answers

Answer:

$60,518.50

Step-by-step explanation:

Well the commission is 7%

7% of $864,550 = $60,518.50

Answer:

$60,518.50

Step-by-step explanation:

$864,550 x 0.7 = $60,518.50

NEED ANSWER ASAP.......

Answers

B:156

c:9.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

-25+-(-5)+13 what is the answers

Answers

Answer: -7

this is just simplified. Tell me if I'm wrong

Answer:

-17

Step-by-step explanation:

The perimeter is? Somebody help please !!!!!!!

Answers

Answer:

The perimeter is 52

Step-by-step explanation:

Just add all the numbers together

13 + 9 + 3 + 7 + 5 + 15 = 22 + 10 + 20 = 32 + 20 = 52

If Melanie jogs 12.8 miles in 4
days, what is her mileage per
day?

Answers

3.2

divide 12.8 and 4

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If the martes obtained by a student in fiue subjects are 15, 14, 20, 17 d 25, then the probability of getting marks more than or equal to 20 is​

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If the martes obtained by a student in fiue subjects are 15, 14, 20, 17 d 25, then the probability of getting marks more than or equal to 20 is