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3 years ago

Harder than death itself I swear

Mathematics

1 answer:

tester [92]3 years ago

6 0

ok so first when u look at this kinda question, you see that it's a 30-60-90 triangle. that means it follows that angle rule.

so you can search up the rule for reference, but it's basically

30º -> x

60º -> x√3

90º -> 2x

alright and now you know that the leg opposite from the 30º is 7. That means that the leg opposite from the 60º will be (x)√3

now use substitution for x=7, and you'll get that

b = 7√3

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A rectangle’s perimeter and it area have the same numerical value. The width of the rectangle is 3 units. What is the length is

Verdich [7]

Answer:

Step-by-step explanation:

3+3+6+6=18

3*6=18

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3 years ago

PLEASE HELP ASAP

Dafna1 [17]

Answer:

Step-by-step explanation:

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28.08

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2 years ago

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A commercial property purchased for 1.2 million is revalued at 995,000. Calculate the percentage decrease in the property’s valu

soldi70 [24.7K]

Answer:

17%

Step-by-step explanation:

First: work out the difference (decrease) between the two numbers you are comparing. Then: divide the decrease by the original number and multiply the answer by 100.

First:

1,200,000 - 995,000 = 205,000

Then:

205,000 / 1,200,000 = 0.17

0.17 × 100% = 17%

4 0

3 years ago

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How do I do this question? Please Help!

AURORKA [14]

Answer:

2x+50 and 5x-55 both are congruent or have same measure.

Step-by-step explanation:

Since we want to prove that both lines are parallel, this means no theorems that involve with parallel lines apply here.

First of, we know that AC is a straight line and has a measure as 180° via straight angle.

x+25 and 2x+50 are supplementary which means they both add up to 180°.

Sum of two measures form a straight line which has 180°.

Therefore:-

x+25+2x+50=180

Combine like terms:-

3x+75=180

Subtract 75 both sides:-

3x+75-75=180-75

3x=105

Divide both sides by 3.

x=35°

Thus, x = 35°

Then we substitute x = 35 in every angles/measures.

x+25 = 35°+25° = 60°

2x+50 = 2(35°)+50° = 70°+50° = 120°

5x-55 = 5(35°)-55 = 175°-55° = 120°

Since 2x+50 and 5x-55 have same measure or are congruent, this proves that both lines are parallel.

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3 years ago

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A cell tower has the hieght of 70 meters. The Tower casts a shadow of 45 meters on the ground. What is the angle of elevation of

laiz [17]

Answer:

$\theta=0.99^{\circ}$

Step-by-step explanation:

Given that,

The height of a cell tower, P = 70 m

The tower casts a shadow of 45 meters on the ground.

We need to find the angle of elevation of the shadow to the top of the cell tower. We can use trigonometry to find it.

$\tan\theta=\dfrac{P}{B}$

Put all the values,

$\tan\theta=\dfrac{70}{45}\\\\\theta=\tan^{-1}\left(\frac{70}{45}\right)\\\\\theta=0.99^{\circ}$

Hence, the angle of elevation is equal to $0.99^{\circ}$ .

4 0

3 years ago