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
Allisa [31]
2 years ago
14

Which statement is true? A. 2x – 1 = 13 and x = 6 B. 2x – 1 = 13 and x = 7 C. 2x + 1 = 13 and x = 7 D. 2x – 1 = 13 and x = 11

Mathematics
1 answer:
alexandr1967 [171]2 years ago
6 0

Answer:

B. 2x – 1 = 13 and x = 7

Step-by-step explanation:

We are given 4 equations and a solution for each. We have to tell which of the given solution satisfies the given equation.

Option A.

2x -1 = 13 and x = 6

Using this value in the equation, we get:

2(6) -1 = 13

12 - 1 = 13

11 = 13, which is not true. Hence this option is not valid

Option B.

2x - 1 = 13 and x = 7

Using the value in the equation, we get:

2(7) - 1 =13

14 - 1 =13

13 = 13, which is true. Hence this option is valid.

Option C.

2x + 1 =13 and x = 7

Using the value in the equation, we get:

2(7) + 1 = 13

15 = 13, which is not true. So this option is not valid

Option D.

2x - 1 = 13 and x = 11

Using this value in the equation, we get:

2(11) - 1 = 13

21 = 13, which is not true. Hence this option is not valid.

You might be interested in
5. Nathan can join a rock climbing club for $52 a month or a flat rate of
Trava [24]

Answer:

Solution: 9 or more months

Inequality: x > or = 9

Step-by-step explanation:

1. Divide 450 by 52 and you get 8.65...

2. Round up since you can't pay for half a month

4 0
3 years ago
The function f(x) is shown below.
Elenna [48]

The value of f(g(2)) is 2.

<h3>What is function?</h3>

An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

The given table is

x       f(x)

–6      1

–3       2

2       5

5       3

8       0

If the coordinates of a function f(x) is defined as (x,y)

then, the coordinates of inverse of f(x) is defined as (y,x).

f(g(y))= f(x)    [ g(x)= (y,x)]

f(g(y))= y

So, If g(x) is the inverse of f(x), the f(g(y)) = y.

Also, we know g(x) is the inverse of f(x), then f(g(2)) = 2.

Learn more about this concept here:

brainly.com/question/2788962

#SPJ1

7 0
2 years ago
The width of a rectangle is 2x ^2 +9x -7 and length is x^2 -9
lesantik [10]

Answer:

63 - 81x - 25x² + 9x³ + 2x⁴

Step-by-step explanation:

Multiply the two polynomials to arrive at your answer I guess, since this was not specific enough.

I am joyous to assist you anytime.

7 0
3 years ago
A square field has an area of 479 ft what is the approximate length of a size of the field
MissTica

Answer:

21.9 ft

Step-by-step explanation:

The area of a square is the square of the side length, so the side length is the square root of the area:

... s = √(479 ft²) ≈ 21.886 ft

This is approximately 21.9 ft.

4 0
3 years ago
Six less than the product of 7 and a number equals<br> 5.
VARVARA [1.3K]

Answer:

x = 11/7 or 1.57

Step-by-step explanation:

let the number be x

now :

=》the product of 7 and the number

  • 7 × x = 7x

=》6 less than the product

  • 7x - 6

=》now, we know :

  • 7x - 6 = 5

  • 7x = 6 + 5

  • 7x = 11

  • x = 11 / 7

7 0
2 years ago
Read 2 more answers
Other questions:
  • The product of two consecutive negative integers is 600. What is the value of the lesser integer?
    9·2 answers
  • Keisha runs 4 miles in 30 minutes. At the same rate, how many minutes would she take to run 10 miles?
    5·2 answers
  • Suppose an investment of $1,800 doubles in value every 7 years. How much is the investment worth after 42 years?
    8·2 answers
  • La trayectoria de cierto satelitese ajusta ala grafica de la funcionf(x) igual6x al cuadradomenos 12donde x representael tiempo
    5·1 answer
  • If a(x) = 3x + 1 and b(x)=<br>x-4, what is the domain of (b. a) (x)?​
    11·2 answers
  • How do you do mental math with 326+402=
    9·1 answer
  • Simplify -1/2x+3-4x+5+3/2x
    13·1 answer
  • A and B are independent events. P(A) = 0.80 and P(B) = 0.10.<br> What is P(A and B)?
    5·2 answers
  • Find the number for which 200% is b mins PLZ HELP QUICK
    15·1 answer
  • Can someone please help me?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!