how to multiply 21 x 25 in oldschool way

Answers

Answer 1
use a calculator i don't know

Related Questions

A cake recipe calls for 2 1/2 cups of flour. If Mrs. Hizon will prepare for 4 2/3 servings of the recipe, how much flour will she need?

Answers

let x be the flour

now

or,(21/2)+x=42/3

or,(21+2x)/2=42/3

or, 3(21+2x)=42×2

or, 63+6x=84

or,6x=84-63

or, 6x =21

or, x=21/6

thus she need 21/6 cups of flour

need help now if u will

Given f ( x ) = x + 4 and g ( x ) = √ x + 5 , determine the following. Write each answer using interval notation. Domain of f ( g ( x ) ) : Domain of g ( f ( x ) ) :

Answers

Answer:

In Functions and Function Notation, we were introduced to the concepts of domain and range. In this section, we will practice determining domains and ranges for specific functions. Keep in mind that, in determining domains and ranges, we need to consider what is physically possible or meaningful in real-world examples, such as tickets sales and year in the horror movie example above. We also need to consider what is mathematically permitted. For example, we cannot include any input value that leads us to take an even root of a negative number if the domain and range consist of real numbers. Or in a function expressed as a formula, we cannot include any input value in the domain that would lead us to divide by 0.

Step-by-step explanation:

Answer:

The answers are f(g(x))=x−7 and g(f(x))=√x2−7. Explanation: This is a composition of functions. f(x)=x2−4. g(x)=√x−3.

Step-by-step explanation:

i used the pemdas treatment

Find the sum of −6x^2 −1 and x+9

Answers

Answer:

[tex]6 {x}^{2} - 1 + x + 9 \\ = 6 {x}^{2} + x + 8[/tex]

(20 Points) What is the value of x?

Answers

x would equal 41 cuz 3x-18=105

Find the perimeter of this figure to the nearest hundredth

Answers

Answer:

The perimeter of given figure = 56.56 ft

Step-by-step explanation:

Step(i):-

From diagram

The length of the rectangle = 10 ft

The width of the rectangle = 8 ft

Perimeter of the rectangle

= 2 ( l+w)

= 2 ( 10 + 8)

= 2 × 18

= 36

Step(ii):-

The semi circle is included in the given diagram

Now we will find the perimeter of semicircle

We know that

perimeter of the circle

p = 2πr + d

perimeter of the semicircle

P = πr + 2 r (∵ d = 2 r)

Step(iii):-

From diagram the diameter of semicircle is equal to the width of the rectangle

d = 8

d = 2 r = 8

The radius of the circle 'r' = 4

perimeter of the semicircle

P = πr + 2 r

P = 3.14 ( 4) + 8

P= 20.56

Conclusion:-

The perimeter of given figure

= perimeter of rectangle + perimeter of semicircle

= 36 + 20.56

=56.56 ft

Which is the graph of the following equation?
Square root of x = 4

Answers

Answer:

A

Step-by-step explanation:

because 2 times 2 equals 4 and the square root just means what times itself equals this

A research team conducted a study showing that approximately 20% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to the brain, diminishing cerebral functions. At a board meeting of 15 businessmen, all of whom wear ties, what are the following probabilities?

(a) at least one tie is too tight

(b) more than two ties are too tight

(c) no tie is too tight

(d) at least 13 ties are not too tight

Answers

Answer:

b) more than two ties are too tight

Step-by-step explanation:

20% of 15

15 = 100%

x = 20%

100x = 15 * 20

x = 300/100

x = 3

ps: I always wear my tie loose at any circumstance, guess I'll never be a good businessman with reduced blood flow to the brain =/

10 cm 10 cm 30 cm. 14.1 cm​

Answers

answer; you

Step-by-step explanation:

I dont know

sssooooooorrrrrrrrrryyyyyyyyyyyy

determine the value of x which r || s. then find m<1 and m<2.
m<1 = 60-4x
m<2= 80-12x

Answers

Answer:

Step-by-step explanation:

Answer:

say what now-

Step-by-step explanation:

WILL MARK BRAINLIEST AND 50 PTS This table shows the minutes students spent studying for their science exam and the scores they received. SHOW YOUR WORK

Study time (min) 19 12 34 10 17 42 60 15 9 21 30 50
Exam score 82 78 90 78 85 97 100 85 73 90 91 98
Use a graphing calculator to model the data using a linear function.

What is the correlation coefficient of the data?


−0.74

−0.48

0.93

0.98

Answers

Answer:

The answer is 0.93

Step-by-step explanation:

I took the test

Đề bài sau dùng cho 3 câu từ câu 1 đến 3
Doanh thu (triệu đồng) 830 900 950 1.020 1.200
Số cửa hàng 15 25 30 20 10
1. Doanh thu bình quân của các cửa hàng là:
a. 980,0 b. 958,5 c. 950,0 d. 980,6
2. Trung vị về doanh thu là:
a. 900 b. 950 c. 958 d. 925
3. Mốt về doanh thu là:
a. 900 b. 950 c. 1.020 d.

Answers

Answer:

Step-by-step explanation:

Adrian and his children went into a restaurant where they sell hotdogs for $3 each
and hamburgers for $8 each. Adrian has $80 to spend and must buy no less than 12
hotdogs and hamburgers altogether. If x represents the number of hotdogs
purchased and y represents the number of hamburgers purchased, write and solve a
system of inequalities graphically and determine one possible solution.

need both inequalities and how many hotdogs and burgers he can buy

Answers

Answer: 16x + 4y= 80

16 (3) + 4 (8) = 80

The sum of the lengths of KLM is 16.14 cm. The length of KL is 6 cm and the length of KM is 4.9 cm. What is the length of KM? A. 27.04 cm B. 5.34 cm C. 5.24 cm D. 5.14 cm

Answers

Answer:

im pretty sure its 1/44 plz make me branliest

Step-by-step explanation:

3.
1. The 20 students on the math team want to raise $490 to buy practice books.
They have already raised $220. If each student raises the same amount, how
much more money must each student raise?

Answers

Answer:

Each student must raise $13.50

Step-by-step explanation:

490-220=270 left to raise

270÷20=13.50

I don’t know how to do this promise or start it

Answers

Answer:

Where is the question ?

Step-by-step explanation:

please help me with this sum I will mark you as braines t​

Answers

Answer:

1.)1804

2.)1827

3.)2286

4.)1473

5.)6489

6.)3448

7.)1122

8.)5467

9.)4755

10.)1524

Step-by-step explanation:

hope it helps:)

What is the length of BC?

A.7
B.12
C.13
D.17
E V60
F. V119

Answers

Answer:

c. 13

Step-by-step explanation:

c²=a²+b²

c²=5²+12²

c²=169

c=13

There are only 6 blue pens, 5 green pens and 8 red pens in a box.
One pen is taken at random from the box.
Write down the probability that this pen is blue.

Answers

Answer:

0.316

Step-by-step explanation:

Probability = (number of outcomes)/(total number of outcomes)

In this case,

the total number of outcomes is 6+5+8 = 19, and

the number of outcomes for getting a blue pen = 6

Hence,

P(blue) = 6/19 = 0.31578947368 ≈ 0.316

Hope this helps and be sure to have a wonderful time ahead at Brainly! :D

Translate into an algebraic equation, then solve the equation.
Peter paid $9.75 to go to the movies, which was $46.25 less than he paid to go to a concert. How much did he pay to go to the concert?

Answers

Answer:

$56

Step-by-step explanation:

Simply add the two values together, the algebraic equation would be:

9.75 + 46.25 = 56

So he paid $56 to go to the concert.

Hope this helps!



The acceleration due to gravity on Earth is 9.8 m/s? What is the weight of a 75 kg person on Earth?
O 9.8 N
O 75 N
O 85 N
O 735 N

Answers

Answer:

the answer is 9.8 N you're welcome

Two movies, an action movie and a drama, were released on the same day. The producers of the action movie claimed that their movie would be better received by audiences than the drama. To test the producers' claim, CinemaScore randomly selected 100 people and showed them both movies. Then the viewers were asked whether they liked or disliked each movie. The results are shown in the table. ​

Answers

Answer:

C is the correct answer.

If you need an explanation tell me.

More people like the action movies.

What is comparison of two numbers?

Comparison of two numbers, means to examine the differences between numbers, quantities or values to decide if it is greater than, smaller than or equal to another quantity.

According to the given question

We have a data in which

Number of people who liked action movie = 78

Number of people who liked action movie = 60

Number of people who disliked the action movie = 22

And, number of people who disliked the drama movie = 40

From the given data we conclude, that action movie is liked by more people as compared to drama movie because 78 > 60.

Hence, the action movie is better received by the audience than the drama.

Learn more about comparison of two numbers here:

https://brainly.com/question/5220791

#SPJ2

Isaac wants to play miniature golf. Go Golf charges $2.50 for ball and club rental and $4.25 per game. Golf Games charges $3.25 for ball and club rental and $8.50 for two games. For how many games would the cost be the same? Write and solve an equation to determine the number of games for which the cost would be the same.​

Answers

The cost would be the same for 47 Go golf and 54 golf games.

What is the Multiplication operation?

In mathematics, Multiplication operations perform Multiplying values on either side of the operator.

Given data as:

Charges for Go Golf -

Renting a ball and a club costs $2.50.

$4.25 for one game and

Charges for Golf Games -

3.25 for the rental of a ball and a club

$8.50 for two games

We have to determine the number of games would the cost be the same.

Total charges of Go golf per game = $2.50 + $4.25 = $6.75

Total charges of Golf game for 2 games = $3.25 + $8.50  = $11.75

For per game = $11.75 / 2 = $5.875

Let the game would be x for  Go golf and

And let game would be y for the golf game

As per the given condition,

6.75 x = 5.875y

27/4 x = 47/8 y

Apply cross multiplication operation,

54x = 47y

x/y = 47 / 54

x = 47

So y = 54.

Hence, the cost would be the same for 47 Go golf and 54 golf games.

Learn more about Multiplication operations here:

brainly.com/question/25834626

#SPJ2

The cost would be the same for 47 games at Go Golf and 54 games at Golf Games.

Total charges of Go golf per game = $2.50 + $4.25 = $6.75

Total charges of Golf game for 2 games = $3.25 + $8.50  = $11.75

Cost per game at Golf Games

= Total charges for 2 games / 2

= $11.75 / 2

= $5.875

Let the number of games be x for Go Golf and y for Golf Games.

As per the given condition,

6.75x = 5.875y

To find the relation between x and y, cross-multiplication can be used:

27/4 x = 47/8 y

54x = 47y

x/y = 47/54

Comparing the value gives

x = 47 and y = 54.

Hence, the cost would be the same for 47 games at Go Golf and 54 games at Golf Games.

Learn more about Ratio here:

https://brainly.com/question/13419413

#SPJ3

P Simplify using
E
order of operations.
MD
AS
14 + 6 x 2 - 16 : 8
-
Enter
math

Answers

Answer:

Answer’s 43

Step-by-step explanation:

6+3=9

7(9)-4x5

63-4x5

63-20

Answer: 43

1.35 - 0.829 SHOW YOUR WORK​

Answers

Answer:

0.521

Step-by-step explanation:

It's just like subtracting

simplify the expression -2x(x+3) A: -x -6 B: -x + 6 C: -2x + 6 D: -2x - 6​

Answers

Answer:

D

Step-by-step explanation:

-2x(x+3)

-2x-6

I NEED ANSWERS TO THESE QUESTIONS


1.How are the areas of a circle and a parallelogram related?


2. Find the area of a circle with a radius of 6.9 m to the nearest tenth. Leave your answer in terms of π.


3. The average crop circle is between 100 and 300 ft in diameter. Find the area of a crop circle that is 300 ft in diameter. Use 3.14 for π.


4. A baker makes a giant cookie for special occasions that is 16 in. in diameter. How many 4-in. diameter cookies would it take to equal the area of one giant cookie?


5. Compare and Contrast What is the difference between the circumference and area of a circle

6. Reasoning A round pizza has an area of 254.34 in.2. Explain how to estimate the length and width of the square box needed to package the pizza

Answers

I only have the answer for 1, but !

1. The area of a parallelogram is  base times height. Since the area of that rectangle is twice the area of the circle, then the area of the circle is half the base times the height. It will be half of 2πr· r. The area of the circle will be πr2

HELP I DONT WANT A 0000

Answers

Step-by-step explanation:

=(5+8)hours

=12hours.

I need an answer ASAP besties- I’m currently crying rn

Answers

Answer:

126/25 or 5.04

Step-by-step explanation:

F(x)=-(-1)^2+ 2(-1)-1

Answers

Answer:

f(x)=-4

I recommend this math site that could help you with these kind of problems

M

A

T

H

W

A

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.

C

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M

Step-by-step explanation:

Complete the equation so that it has infinitely many solutions.

13(3−z)=

Answers

Answer:

13(3 − z) = 39 - 13z

Step-by-step explanation:

13(3 − z)

= 39 - 13z

So, the equation will be 13(3 − z) = 39 - 13z

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