1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marysya [2.9K]
2 years ago
10

Let r(x)=x^2.If r(x)=4,find x

Mathematics
1 answer:
ElenaW [278]2 years ago
3 0
The answer should be D
You might be interested in
Un alumno multiplica un número por 32 en lugar de multiplicarlo por 23, obteniendo un producto mayor en 54 al producto original.
romanna [79]

Answer:

La suma de cifras del producto original es igual a 12.

Step-by-step explanation:

De acuerdo a la información proporcionada, si multiplicas un número "x" por 32 su resultado sería igual al producto original "y" más 54 dado que dice que se obtiene un producto mayor en 54 al producto original, lo que se puede expresar de la siguiente forma:

32x=y+54

Además, se puede inferir a partir del enunciado que si el número x se hubiera multiplicado por 23 el resultado habría sido el producto original que lo denominamos como "y", por lo que puedes decir que:

y=23x

Ahora puedes reemplazar y=23x en 32x=y+54 y despejar x:

32x=23x+54

32x-23x=54

9x=54

x=54/9

x=6

Finalmente, puedes reemplazar el valor de x en y=23x:

y=23x

y=23*6

y=138

Suma de cifras: 1+3+8 = 12

De acuerdo a esto, la respuesta es que la suma de cifras es igual a 12.

5 0
2 years ago
I love you pls help me im hopeless
Rina8888 [55]

Answer:

46°

Step-by-step explanation:

7 0
3 years ago
Part A: Sydney made $18.50 selling lemonade, by the cup, at her yard sale. She sold each cup for $0.50 and received a $3 tip fro
prisoha [69]

Answer:

Part A: x0.50 + 3 = 18.50

Part B: x0.75 + 3 - x0.10 = 21

Part C: The equations from Part A and Part B differ because of the cost of plastic cup.

Step-by-step explanation:

Let x represent the number of cup of lemonade sold. Therefore, we have:

Part A:

This situation can be represented by the following equation:

x0.50 + 3 = 18.50

Part B:

This situation can be represented by the following equation:

x0.75 + 3 - x0.10 = 21

Part C:

The equations from Part A and Part B differ because of the cost of plastic cup.

For equation from Part A, revenue is the same as profit as Sydney does incur any cost to buy plastic cup before selling her lemonade.

For equation from Part B, revenue is different from profit because Daria has to incur the cost of plastic cup which $0.10 per cup of lemonade before selling her lemonade.

8 0
3 years ago
Read 2 more answers
Round to the nearest hundredth 0.7553
spayn [35]
What is 0.7553 rounded to the nearest hundredth?

0.76
It is: 0.76
0.76
It is 0.76 rounded to the nearest hundredth
3 0
3 years ago
Read 2 more answers
can someone help me solve this multiplying polynomial question? it would really help, the screenshot is attached (:
Korvikt [17]

Answer:

-20x³ + 0x² + 15x - 20

Step-by-step explanation:

I would have said it the other way.

"Multiply each term in the top row by -5."

 4x³ +  0x   -  3x +  4

<u>×(-5</u>)  <u>×(-5</u>)  <u>×(-5)</u>  <u>×(-5) </u>

-20x³ + 0x² + 15x -20

3 0
3 years ago
Other questions:
  • A sociologist is interested in seeing if people's satisfaction with their married life (very satisfied, somewhat satisfied, fair
    6·2 answers
  • Solve for x 5/4=x/12
    13·2 answers
  • A magazine editor wants to know what percent of people ski. She chooses people randomly on a winter weekend and calls them at ho
    8·1 answer
  • Please help me on this problem.
    9·1 answer
  • Find the discrimanant and the number of real roots for this equation x^2+2x+8=0
    12·1 answer
  • Pleas help i will give a lot of points IF you answer this ?
    8·1 answer
  • Shape A and Shape B are each made from 5 identical squares.
    5·1 answer
  • At an ice cream shop, 4 of the last 10 cones sold had cookies and cream ice cream. Considering this data, how many of the next 1
    6·2 answers
  • Pleaaaasssseeee help meeeeeee
    6·2 answers
  • Q: The central angle of sector E is 71 degrees and the central angle of sector F is 39 degrees. What is the probability that the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!