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2 years ago

NEED DONE FAST GIVING 40 POINTS

Mathematics

1 answer:

dlinn [17]2 years ago

7 0

To solve this problem you must apply the proccedure shown below:

1. The perimeter of a rectangle can be calculated with the following formula:

$Perimeter=2Width+2Length$

2. The width is:

$Tan\alpha=opposite/adjacent\\Tan(72)=12/W\\ W=(12)(Tan(72))\\ W=3.89 in$

3. Now, you must substitute the values into the formula for calculate the perimeter:

$Perimeter=2(3.89in)+2(12in)\\ Perimeter=31.78in$

Therefore, the answer is: $31.78 in$

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In a survey of 400 people randomly selected it was determined that 22 play soccer. What is the probability that a randomly selec

galben [10]

The answer to this problem is 0.055%
And you get that by doing 22/400

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3 years ago

the breadth of a rectangular painting is 65 cm. its length is 137 cm more than its breadth. what is the area of the painting?

Marysya12 [62]

Answer:

8,905cm²

Step-by-step explanation:

Area= Length × Breadth

=137cm × 65cm

= 8,905cm²

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2 years ago

You purchase a $220 Arline ticket. You have a discount code to receive 10% off. There is a 10.5% service charge added to the tot

antoniya [11.8K]

When you see % next to a number, you multiply it by .01.
10 becomes .1
10.5 becomes .105

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3 years ago

If 3x−y=12, what is the value of <br> 8x<br> 2y<br> ?

anygoal [31]

If 3x-y=12, what is the value of 8x/2y?

Answer:

$\frac{8x}{2y} =\frac{4x}{3x-12}$

Step-by-step explanation:

$3x-y=12$

$-y=12-3x$

$y=3x-12$ -------------------------(equation 1)

Now,

$\frac{8x}{2y} =\frac{8x}{2(3x-12)}$ ---------(from equation 1)

$=\frac{8x}{6x-24}$

$=\frac{8x}{2(3x-12)}$

$=\frac{4x}{3x-12}$

Therefore, the value of $\frac{8x}{2y} =\frac{4x}{3x-12}$

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2 years ago

What is the distance BC between the two horizontal parallel bars?

pochemuha

One thing you should notice is that the transverse line and the parallel line form a right triangle. We are told that the base is 4 and the angle between the hypotenuse and the leg is 45°

From this we can solve for the second leg. Here's the list of trig functions

sinФ = opposite/hypotenuse
cosФ = adjacent/hypotenuse
tanФ = opposite/adjacent

Since we are only given the adjacent and we are trying to solve for the opposite leg, we can deduce we use tanФ. So we get

$tan45 = x/4$

Multiply by 4 to isolate x and we get

$4*tan45$ = x
Hopes this helps!

8 0

2 years ago