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
Lisa [10]
3 years ago
5

Solve 7x + 1 < 4(x - 2).

Mathematics
1 answer:
luda_lava [24]3 years ago
8 0

The general approach to solving any such inequality is to get the variable by itself on one side of the relationship symbol. The instructions for this can vary, but here is a set of instructions that will always work.

1. Subtract the expression on the right side of the relationship symbol.

... 7x + 1 < 4(x - 2) . . . . starting inequality

... 7x +1 - 4(x -2) < 0 . . . after step 1

2. Eliminate parentheses and collect terms.

... 7x +1 -4x +8 < 0

... 3x +9 < 0 . . . . . . . . . after step 2

3. Divide by the coefficient of the variable. Here, divide by 3. If the coefficient of the variable is negative, also reverse the relationship symbol (≥ becomes ≤, for example).

... x + 3 < 0 . . . . . . . . . we divided by 3

4. Add the opposite of the constant, if any.

... x < -3 . . . . . . . . . . . . after adding -3

This solution matches your 4th selection:

... {x | x < -3}

You might be interested in
Could someone please help ?
blondinia [14]

Answer:

No

Step-by-step explanation:

Put x = 2 into both equations:

For x- 10 = 2-10 = 8 (Not  > 8)

For -0.5x-4 = -0.5*2-4 = -5 (Not < -8)

Hence, the answer is no.

4 0
2 years ago
2. What would a point on the horizontal axis represent? What about on the vertical axis?
Nikitich [7]
In analytic geometry, using the common convention that the horizontal axis represents a variable x and the vertical axis represents a variable y, a y-intercept or vertical intercept is a point where the graph of a function or relation intersects the y-axis of the coordinate system. As such, these points satisfy x = 0.


A coordinate grid has two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis. The vertical axis is called the y-axis. The point where the x-axis and y-axis intersect is called the origin. The numbers on a coordinate grid are used to locate points.
7 0
3 years ago
Isaiah has $7.15 in Dimes and Nickels. He has a total of 91 coins. How many of each coin does he have? Group of answer choices d
yarga [219]

Answer:

Dimes = x = 52

Nickels = y = 39

Step-by-step explanation:

Let

Dimes = x

Nickels = y

x + y = 91 (1)

0.10x + 0.05y = 7.15 (2)

From (1)

x = 91 - y

Substitute x = 91 - y into (2)

0.10x + 0.05y = 7.15

0.10(91 - y) + 0.05y = 7.15

9.10 - 0.10y + 0.05y = 7.15

- 0.10y + 0.05y = 7.15 - 9.10

-0.05y = -1.95

y = -1.95 / 0.05

= 39

Substitute y = 39 into (1)

x + y = 91

x + 39 = 91

x = 91 - 39

x = 52

Dimes = x = 52

Nickels = y = 39

7 0
3 years ago
Name the property the equation illustrates.
Maslowich
I think it is the associative property of Addition
6 0
3 years ago
Read 2 more answers
What is the expressions to 2 2 _ 7
castortr0y [4]

Answer:

its an equivalent equation

Step-by-step explanation:

are algebraic equations that have identical solutions or roots. Adding or subtracting the same number or expression to both sides of an equation produces an equivalent equation. Multiplying or dividing both sides of an equation by the same non-zero number produces an equivalent equation.

3 0
3 years ago
Other questions:
  • Mei is writing an inequality for the expression at least 10 hours of community service. Find her mistake and correct it
    7·1 answer
  • Write the number equal to 5 tens and 13 ones.
    15·2 answers
  • Sally had seventy - seven dollars to spend on eight books. After buying them she had thirteen dollars. How much did each book co
    5·1 answer
  • Brianna spent 4.00$ on admission to a basketball game she also spent some money at the concession stand in all Brianna spent 16.
    15·1 answer
  • Find the area of the composite shape
    11·1 answer
  • What is 20 plus 2 /6
    13·1 answer
  • Determine measurements of data for the following numbers:
    15·1 answer
  • PLEASE HELP ME ASAP ?!?!?
    5·1 answer
  • The density of hydrogen is approximately 9 × 10-5 , while the density of helium is approximately 2 × 10-4 .
    13·1 answer
  • The table shows linear relationship between the values of X and Y.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!