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malfutka [58]
3 years ago
5

Could you please solve this?

Mathematics
1 answer:
marissa [1.9K]3 years ago
5 0

Answer:

x = 12

Step-by-step explanation:

The ray from the vertex to the base is an angle bisector and divides the opposite side into segments that are proportional to the other 2 sides, that is

\frac{x}{9} = \frac{4}{3} ( cross- multiply )

3x = 36 ( divide both sides by 3 )

x = 12

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How many people swam fewer than 30 laps?
Bas_tet [7]

Answer:

3 people

Step-by-step explanation:

Reading a stem & leaf plot can be hard!

Remember in the middle or whichever side is single digits divided by the line is your tens place values.

The 2 has two values on the other side, giving us 23 & 29 laps.

The 1 has one value on the other side, giving us 11 laps.

The 0 has no other value, so there is no data for that row.

There were 3 data points below 30, & these were 11, 23, & 29.

Hope this helped. :)

5 0
2 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
ddd [48]

Answer:

f'(x) = 4x^2 - 3 for x \le -3

Step-by-step explanation:

See attachment for proper question

Given

f(x) = -\frac{1}{2}\sqrt{x + 3}

For

x \ge -3

Required

Determine the inverse function

f(x) = -\frac{1}{2}\sqrt{x + 3}

Replace f(x) with y

y = -\frac{1}{2}\sqrt{x + 3}

Swap the positions of x and y

x = -\frac{1}{2}\sqrt{y + 3}

Multiply both sides by -2

-2 * x =-2 *  -\frac{1}{2}\sqrt{y + 3}

-2x =\sqrt{y + 3}

Square both sides

(-2x)^2 =(\sqrt{y + 3})^2

4x^2 =y + 3

Make y the subject

y = 4x^2 - 3

The inverse has been solved. So, we need to replace y with f'(x)

f'(x) = 4x^2 - 3

Next, is to determine the interval

x \ge -3

Change inequality to \le

x \le -3

Hence, the inverse function is:

f'(x) = 4x^2 - 3 for x \le -3

7 0
3 years ago
Help<br><br> The diameter of the circle is 8in
-BARSIC- [3]
I believe your answer is 25.12
7 0
2 years ago
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1+1=<br><br>please help me, this question is very difficult​
AURORKA [14]
I think it’s 47743774367
8 0
3 years ago
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Two expressions are shown below. Explain whether or not expressions P and Q are equivalent
bulgar [2K]

Answer:

I don't see any expressions shown below.

Step-by-step explanation:

8 0
3 years ago
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