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2 years ago

Triangle A B C is shown. The length of A B is 12, the length of B C is 24, and the length of C A is 12 StartRoot 3 EndRoot

Mathematics

1 answer:

jeka57 [31]2 years ago

8 0

Answer: The answer is B.

Step-by-step explanation:

First of all, if you just look at the angles, you can already tell that angle A is the right angle, in which you can then cross out A and C. Now you are down to B or D. This was tough but if you remember that the longer leg is square root of 3 times the shorter leg then you can tell that the included angle between the side showing 12 and the side showing 24 is the 60 degree angle. This leaves you to tell that the other angle is 30 degrees.

I hope this helps ;)

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If lin runs 21 laps at the same rate, how long does it take her 25.6 minutes How many laps per minute is that? __ laps

Alex Ar [27]

Answer: 0.82 laps per minute

Step-by-step explanation:

Lin is running 21 laps in 25.6 minutes.

To find out her speed in laps per minute, divide the distance she has ran by the time it took her to run it.

= Distance / time

= 21 / 25.6

= 0.82 laps per minute

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3 years ago

Given the following linear function sketch the graph of the function and find the domain and range. f( x ) = 2/7 x− 2

Savatey [412]

Answer:

Domain: All Real Numbers Range: All Real Numbers

Step-by-step explanation:

The domain and range is going to be infinite. The linear function will be using the x and y- axis in order to continue being a function. The y-intercept will be -2 on the y-axis. I recommend using the rise-over-run method for your slope value. from the point (0, -2) on the y-axis. Go up two on the y-axis, and right 7 on the x-axis.

Sorry, it may be difficult to explain through words.

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2 years ago

Find the volume of a rectangular prism with a length of 9 cm, a height of 13 cm, and a width of 7 cm.

Sati [7]

Answer:

819 cm³

Step-by-step explanation:

V=L·H·W

V=9·13·7

V=819 cm³

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2 years ago

Read 2 more answers

I need help please!!!!!!!

daser333 [38]

Answer: 5.20833333 , SUB TO MY YT Tae Combos

Step-by-step explanation:

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3 years ago

So my math teacher doesn't give us any steps to know how to do the equations. She just tells us the unit, then the vocab plus th

Lemur [1.5K]

I personally understand what you are saying... everyone has a teacher like that at least once in their schooling.

Doing two-step equations can sometimes be tricky, even if you understand the topic pretty well. All two-step equations are: equations that require two objectives to solve for the variable (That's why it's called a two-step equation).

There are multi-step equations...but let's take one bite at a time.

First, let's establish one simple rule:

Anything you do to one side of the algebraic equation, you must do to the other side for the equation to remain true.

For example:

$2x-4=20$

So, we have this $2x-4$ just chillin' out with the $x$ . When trying to solve for a variable, this is usually not what we want. The $x$ needs to be alone for us to know what $x$ equals.

For the first step of getting $x$ alone, we can add $4$ on each side of the equation to cancel out the $-4$ on the variable's side. Remember to do it on both sides of the equation!

$2x-4=20$ becomes $2x-4+4=20+4$

Did you see what I did there? All I did was basically add $4$ to $2x-4$ and $20$ . The equation remains equal, but using that simple rule, we were able to get one step closer to isolating the $x$ in the equation.

To continue...

$2x-4+4=20+4$

$2x-4+4$ turns into $2x$ (This is because the $-4$ and the $+4$ cancel out.)

Now we have $2x=24$

This next step should look familiar to you (assuming you already know how to solve for one-step equations, I'll keep it short and sweet).

$2x=24$

Now, since $2x$ is the same as saying $2$ times $x$ , we can do the opposite of multiplication...which is division, like so:

$\frac{2x}{2} =\frac{24}{2}$

The $2$ 's will cancel each other out and $\frac{24}{2}$ simplifies to $12$ .

Awesome! Looks like we solved our two-step equation!

In the equation: $2x-4=20$ , $x=12$

Some things to remember:

What ever you do to one side of the equation, you must do to the other.
You want to apply the opposite sign of the number you are trying to cancel out of the equation while isolating the $x$ .
Never make it harder than it needs to be. It is called a two-step equation for a reason, multi-step requires more than two...but wait until you have to work those before you start using fifty different ways to solve the equation.

Hope I was able to help you out! Have a good one, and God bless!

Also, if you are confused about something I answered, or I may be incorrect, feel free to let me know!

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3 years ago