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3 years ago

For what values of x is x + 2x = 24 true?

1 answer:

5 0

I’m sorry. But none of your choices are correct. The correct answer would be 3 and 4. Further more explaining= 3+ 2 times 4 is 24. 2x= 4. That equals 8 and 3 times 8 is 24

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10x+9=4x -9 solve <br><br> please help

Neporo4naja [7]

Answer:

x = -3

Step-by-step explanation:

To solve this, you need to isolate the variable x, this means only one side of the equation should have the variable x. To do this, you need to do the opposite operation from what's given (if it's addition, use subraction; if it's multiplication, use division; these work vise versa)

Subtract 9 from both sides of the equation. This gives you 10x = 4x - 18.
Subtract 4x from both sides of the equation. This gives you 6x = -18.
Divide both sides by 6. This gives you x = -3

The final answer is x = -3

7 0

2 years ago

During a scuba dive, Lainey descended to a point 29 feet below the ocean surface. She continued her descent at a rate of 29 feet

Alex73 [517]

Answer:

Her initial position was:

-29ft

Where we use the minus sign because this is below the ocean's surface.

Now we also know that she keeps descending at a rate of -29ft per minute, then if she keeps descending for t minutes, her position will be:

P(x) = -29ft - 29ft/min*t

Now, we also know that she does not want to descend more than 81ft below the ocean's surface, then we have the inequality:

P(x) ≥ -81ft

-29ft - 29ft/min*t ≥ -81ft

Now let's isolate t in one side:

- 29ft/min*t ≥ -81ft + 29ft = -52 ft

- 29ft/min*t ≥-52 ft

t ≤ -52ft/(- 29ft/min) = 1.79 min

Then the maximum amount of time that she can keep descending is 1.79 minutes.

6 0

3 years ago

A spinner is divided into nine equal sections numbered 1 through 9. Predict how many times out of 270 spins the spinner is most

polet [3.4K]

Question 1: 150

Question 2: 50

Question 3: 58% chance

Question 4: Choosing a set of parallel side on a polygon.

Question 5: 1/6

Question 6: 1/5

Question 7: ?

Question 8: Rolling a number greater than 1

Question 9: 1/12

Question 10: 30

Question 11: ?

Question 12: A green marble is selected.

Hope I helped I tried as much as possible.

3 0

2 years ago

Really confused please help!!

Ivenika [448]

Answer:

Step-by-step explanation:

The answer is C

Hope it helps ^^

3 0

2 years ago

F(x) = √3x

Nataly_w [17]

The domain of the function is $(\frac{f}{g})(x) = \frac{\sqrt[3]{3x}}{5x + 2}$ . $x \ne -\frac 25$

<h3>How to determine the domain and the restrictions?</h3>

The attached image represents the complete form of the question

The functions are given as:

$f(x) = \sqrt[3]{3x}$

g(x) = 5x + 2

The function (f/g)(x) is calculated using:

$(\frac{f}{g})(x) = \frac{f(x)}{g(x)}$

This gives

$(\frac{f}{g})(x) = \frac{\sqrt[3]{3x}}{5x + 2}$

The denominator cannot be 0.

So, we have:

$5x + 2 \ne 0$

Solve for x

$x \ne -\frac 25$

Hence, the domain of the function is $(\frac{f}{g})(x) = \frac{\sqrt[3]{3x}}{5x + 2}$ . $x \ne -\frac 25$