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4 years ago

12

define a variable write an equation and solve the problem. the length of a rectangle is twice the width. an equation that models

the perimeter of the rectangle is 2w+4w=36 where w is the width of the rectangle in ft. what are the length and width of the rectangle?

1 answer:

liberstina [14]4 years ago

7 0

6w=36
w=6

width=6
length=12

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I need helpppppp i have no idea what im looking at lol

Y_Kistochka [10]

The correct answer is option B which is $SinA = \dfrac{4}{5}$ , $tanA = \dfrac{4}{3}$ , $SecA=\dfrac{5}{3}$ ,

$CosA=\dfrac{3}{5}$ , $CotA=\dfrac{3}{4}$ and $CscA=\dfrac{5}{4}$ .

<h3>What is trigonometry?</h3>

Trigonometry is the branch of mathematics which set up a relationship between the sides and angle of the right-angle triangles.

From the figure we can see that two sides are Ab = 15 cm and BC = 12 cm third side will be calculated by pythagorean theorem.

AC² = AB² - BC²

AC² = 15² - 12²

AC² = 81

AC = √81

AC = 9 cm

Now all the trigonometry identities are:-

$SinA =\dfrac{BC}{AB}=\dfrac{12}{15}= \dfrac{4}{5}$ ,

$tanA =\dfrac{BC}{AC}=\dfrac{12}{9}= \dfrac{4}{3}$ ,

$SecA=\dfrac{AB}{AC}=\dfrac{15}{9}= \dfrac{5}{3}$ ,

$CosA=\dfrac{AC}{AB}=\dfrac{9}{15}= \dfrac{3}{5}$ ,

$CotA=\dfrac{AC}{BC}=\dfrac{9}{12}=}\dfrac{3}{4}$

$CscA=\dfrac{AB}{BC}=\dfrac{15}{12}= \dfrac{5}{4}$ .

Therefore correct answer is option B which is $SinA = \dfrac{4}{5}$ , $tanA = \dfrac{4}{3}$ , $SecA=\dfrac{5}{3}$ , $CosA=\dfrac{3}{5}$ , $CotA=\dfrac{3}{4}$ and $CscA=\dfrac{5}{4}$ .

To know more about Trigonometry follow

brainly.com/question/24349828

#SPJ1

6 0

2 years ago

The perimeter of △MTV is 605 in.<br><br> MV = ?<br><br> m∠M = ?

swat32

Answer:

MV = 160 (and %50 sure) X = 27

Step-by-step explanation:

To find MV we just have to subtract the two lengths of the perimeter that we do know, minus the total perimeter, and find the difference. (using that its, 605-160-285 = 160) with that knowledge, we can say two things. MV = 160, and <V = <T by the two side lengths being congruent. With that, we can say that X + X +X+99 = 180, and then just find X, 27+27+27+99=180.

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4 years ago

Is the solution to the quadratic equation written below rational or irrational? Justify your answer.

deff fn [24]

Answer:

irrational

Step-by-step explanation:

It cant be square rooted perfectly.

8 0

2 years ago

Which expression is equivalent to (6x+2)+(3x+7)?

EleoNora [17]

Answer:

6x+3x=9x

2+7=9

9(x+1)

Distributive property

9x + 9

(im not completly sure this is the right answer)

8 0

3 years ago

I need the answer for 4. and 5.

Gwar [14]

Exercise 4

A grow from 13.1 millions to 14.4 millions means to grow

$14.4-13.1 = 1.3$

millions. So, the question is: which percentage of 13.1 is 1.3? Well, we have to find a number x such that

$\dfrac{x}{100}\cdot 13.3 = 1.3$

Solving for x, you have

$x = \dfrac{1.3 \cdot 100}{13.3} \approx 9.92$

Exercise 5

27% is a bit more than 25%, which is a quarter. So, we expect to find a pie chart with one slice occupying roughly one quarter of the pie. The example that best suits this requirement is B (A is almost half, and C is less than one quarter).

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3 years ago