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4 years ago

Which of the following is not a way to represent the solution of the inequality 7 − 9x − (x + 12) less than or equal to 25?

Mathematics

2 answers:

Ann [662]4 years ago

6 0

Answer:

A) x greater than or equal to −3

Step-by-step explanation:

We have the following inequality:

7 − 9x − (x + 12) ≤ 25

Solving the inequation, we have:

7 − 9x − x - 12 ≤ 25

-10x ≤ 30

-x ≤ 3

x≥-3

Therefore the result is option A) x greater than or equal to −3

geniusboy [140]4 years ago

4 0

Answer:

Step-by-step explanation:

7-9x - (x+12) ≤ 25

7 - 9x - x - 12 ≤ 25

-10x - 5 ≤ 25

-10x ≤ 25 +5

x ≥ 30/-10

x ≥ -3.

So, the incorrect answer is B.

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Answer:

3. = 32 4. = 54 min

Step-by-step explanation:

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2 years ago

Find the volume of a sphere with a radius of 9 inches. Use 3.14 for π

schepotkina [342]

Answer:

Answer = 3053.63

Step-by-step explanation:

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8 0

3 years ago

Read 2 more answers

Solve the following quadratic equation for all value of c i'm simplest form 5(x-2)^2=20

xz_007 [3.2K]

Answer:

x=-2 and x=0

Step-by-step explanation:

5(x-2)^2 = 20; divide by 5 both sides

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8 0

3 years ago

Read 2 more answers

6.15 divided by 31 rounded

nikdorinn [45]

It would be (rounded) 5
Because
31 / 6.15 = 5.04065

Hope this helped

Have a great day/night

7 0

3 years ago

The water level in a lake was monitored and was noted to have changed -2 1/3 inches in one year. The next year it was noted to h

Diano4ka-milaya [45]

Answer:

The total change in water level over the past 2 years is $\displaystyle -4 \frac{1}{6}$ .

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Fractions

Proper and Improper

Numbers

Least Common Multiple (LCM)

Step-by-step explanation:

Step 1: Define

Identify

Year 1 water change: $\displaystyle -2 \frac{1}{3}$

Year 2 water change: $\displaystyle -1 \frac{5}{6}$

Step 2: Find Total Water Change

[Set up] Add yearly water changes: $\displaystyle -2 \frac{1}{3} + -1 \frac{5}{6}$
[Fractions] Convert to improper: $\displaystyle \frac{-7}{3} - \frac{11}{6}$
[Fraction] Rewrite [LCM]: $\displaystyle \frac{-14}{6} - \frac{11}{6}$
[Order of Operations] Subtract: $\displaystyle \frac{-25}{6}$
[Fraction] Convert to proper: $\displaystyle -4 \frac{1}{6}$

5 0

3 years ago