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Westkost [7]
3 years ago
14

PLZ Help as fast as you can:)

Mathematics
2 answers:
Arturiano [62]3 years ago
6 0

Answer:

The <em>Triangle Proportionality Theorem</em> is about the similarity between a pair of triangles, where corresponding pair of sides are proportional and corresponding pairs of angles are congruent.

An real-wold situation where we use this theorem is when we use the shadow and height of an small object to find the height of a bigger object. For example, the image attached shows a tree and a bulding, we know the length of the height and shadow of the tree, and we also know the shadow length of the building. So, we want to measure indirectly the height of the building, to do that, we apply the triangle proportionality theorem, which is the following proportion

\frac{y}{x}=\frac{h}{s}

You can obser that each ratio is about a specific triangle, we don't mixed magnitudes from different triangles in one ration, because that can get messy. Then, we replace all given values

\frac{y}{12.5m}=\frac{2m}{2.5m}  \\y=\frac{2(12.5)m}{2.5}\\ y=10m

Therefore, the building is 10 meters tall.

So, there you have it, one real-world example and how we apply the theorem.

Anton [14]3 years ago
4 0

Answer:

any options to choose from?

or go to edubirdy and search it and it will definitely help you out

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For the cost function, find the marginal cost at the given production level x. State the units of measurement. (All costs are in
baherus [9]

Answer:

The marginal cost at the given production level is $49.9.

Step-by-step explanation:

The marginal cost function is expressed as the first derivative of the total cost function with respect to quantity (x).

We have that the cost function is given by

C(x) = 15000 + 50x + \frac{1000}{x}

So, we need the derivative and then we’ll need to compute the value x = 100 of the derivative.

C'(x)=\frac{d}{dx}\left(15000+50x+\frac{1000}{x}\right)\\\\\mathrm{Apply\:the\:Sum/Difference\:Rule}:\quad \left(f\pm g\right)'=f\:'\pm g'\\\\C'(x)=\frac{d}{dx}\left(15000\right)+\frac{d}{dx}\left(50x\right)+\frac{d}{dx}\left(\frac{1000}{x}\right)\\\\C'(x)=0+50-\frac{1000}{x^2}\\\\C'(x)=50-\frac{1000}{x^2}

When x = 100, the marginal cost is

C'(100)=-\frac{1000}{100^2}+50\\\\C'(100)=\frac{499}{10}=49.9

6 0
3 years ago
X^1/4 +3 =0 -Solve the equation. Check your solutions
mina [271]

Answer:

81

Step-by-step explanation:

subtract 3 from both sides->x^1/4=-3

set both sides to the power of 4-> x=(-3)^4

solve-> x=81

3 0
3 years ago
5x-60 = -60 +2x +3x<br> how many solutions does the equation have
xeze [42]

Answer:

infinitely \: many \: solution

Step-by-step explanation:

1) Cancle -60 on both sides.

5x = 2x + 3x

2) Simplify 2x + 3x to 5x.

5x = 5x

3) Since both sides are equal, there are infinitely many solutions.

infinietly \: many \: solution

<u>Therefor</u><u>,</u><u> </u><u>this</u><u> </u><u>equation</u><u> </u><u>has</u><u> </u><u>infinitely</u><u> </u><u>many</u><u> </u><u>solutions</u><u>.</u>

5 0
3 years ago
it costs $3.45 to buy 3/4 lb of chopped walnuts. how much would it cost to purchase 7.5 lbs of walnuts?
Vesna [10]

Answer:

$6.75 I THINK

Step-by-step explanation:

I struggled to figure this out and I'm pretty sure its $6.75 but im not sure :(

4 0
3 years ago
Read 2 more answers
What is the value of y?
NNADVOKAT [17]

Answer:

y = 40

Step-by-step explanation:

Lets make an equation to represent the sum of the angles:

We know that the sum of angles of triangles equals 180 degrees. So based on this knowledge, the equation is :

2y + y + 10 + 50 = 180


Now we simplify:

2y + y = 3y


10 + 50 = 60


So our new equation is 3y + 60 = 180

Now all we have to do is simplify:

3y + 60 = 180

3y + 60 -60 = 180 - 60

3y = 120

3y / 3 = 120 / 3

y = 40


So the answer is 40 hope this helped


7 0
3 years ago
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