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horrorfan [7]
2 years ago
9

Plz solve this inequality

Mathematics
1 answer:
nasty-shy [4]2 years ago
8 0

Answer:

\{r | r \ge -3 \}

Step-by-step explanation:

7 - 9r - (r + 12) \le 25

Remember that to deal with the negative sign to the left of the parentheses, you must think of it as a -1 multiplying the parentheses, and you distribute the -1 by multiply each term inside the parentheses by -1. That changes all the signs inside the parentheses.

7 - 9r - r - 12 \le 25

Combine like terms on the left side.

-10r - 5 \le 25

Add 5 to both sides.

-10r \le 30

We now divide both sides by -10. Remember that when you divide both sides fo an inequality by a negative number, the inequality sign changes direction.

r \ge -3

Answer: \{r | r \ge -3 \}

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Write 27/22 as a decimal rounded to the nearest tenth? ​
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Answer:

1.2

Step-by-step explanation:

7 0
3 years ago
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Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state thi
vladimir2022 [97]
The answer is x = 10, y = 10.

Step 1: rearrange the second equation for y.
Step 2: substitute y from the second equation into the first equation.
Step 3. Calculate y.

Step 1.
<span>The second equation is: 6x + 3y = 90
Divide both sides of the equation by 3:
(6x + 3y)/3 = 90/3
6x/3 + 3y/3 = 30
2x + y = 30
Rearrange the equation:
y = 30 - 2x

Step 2.
</span>Substitute y from the second equation (y = 30 - 2x) into the first equation:
<span>15x + 9y = 240
15x + 9(30 - 2x) = 240
15x + 270 - 18x = 240
15x - 18x = 240 - 270
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Step 3.
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6 0
2 years ago
APT4PTO
inysia [295]

Answer:

  1536 square inches

Step-by-step explanation:

In units of 5 feet, the backdrop is 3 units wide and 2 units high, for a total area of 3×2 = 6 square units.

Those same units on the scale drawing are each 16 inches. One square unit on the scale drawing is (16 in)² = 256 in². So, 6 of them have an area of ...

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6 0
2 years ago
Can someone solve 3(b+2)+2(b-3)=-5
Alenkinab [10]

Answer:

b=-1

Step-by-step explanation:

3(b+2)+2(b-3)=-5

3b+6+2b-6=-5

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5 0
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Ksenya-84 [330]

A linear relationship is an equation that has a constant slope

The equation that does not represent a linear relationship is (b) y = 2x^2 + 5x

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A linear equation can take any of the following forms:

y = mx + b

y - y1 = m(x - x1)

Ax + By = c

Any form different from the above forms is not a linear equation

Using the above format as a guide, the equation that does not represent a linear relationship is (b) y = 2x^2 + 5x

Read more about linear relationships at:

brainly.com/question/15602982

7 0
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