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Stolb23 [73]
2 years ago
15

Select the correct answer. Lacy is making a new sail for her boat. The sail needs to have the given dimensions. Approximately ho

w much fabric does she need for the sail? A. 70.1 square feet B. 81 square feet C. 99.2 square feet D. 140.3 square feet
Mathematics
1 answer:
Julli [10]2 years ago
3 0

70.1 ft² of fabric is needed by Lacy to make the sail boat.

<h3>Trigonometric ratio</h3>

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

Let b represent the base of the triangle and h the height, hence:

sin(60) = h / 18

h = 15.6 feet

sin(30) = b / 18

b = 9 feet

The area of triangle = (1/2) * b * h = 0.5 * 9 * 15.6 = 70.1 ft²

70.1 ft² of fabric is needed by Lacy to make the sail boat.

Find out more on Trigonometric ratio at: brainly.com/question/6459892

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Write an equation: At 2 claps, Joe is in position 7 and walking towards zero at a rate of 3 claps per minute.
frutty [35]

Answer:

I'll assume "position 7" refers to distance and not to the order of other people.  

Step-by-step explanation:

We want an equation of the form y=mx+b, where m is the slope and b is the y-intercept (the value of y when x=0).  We can assume that "claps" is a new measure of distance.  0 claps is the finish.

Let's express the information provided in point format.

"At 2 claps, Joe is in position 7"  is (2,7)  2 is the distance (claps) and 7 is the time (minutes)

And we can say the rate is also the slope of a line.  "rate of 3 claps per minute" is 3c/m, where c is claps and m is minutes.

We can start a line equation by stating y = 3x + b, where we're using the rate, 3 c/m, as the slope, m.

We need to determine the value of b.  We can use the given point (2,7) and solve for m:

y = 3x + b

7 = 3*(2) + b

b = 1

The equation becomes y = 3x + 1

y is the distance in claps and x is the time in minutes.

At a time of 2 claps he is at position of 7.  b = 1 means he started 1 clap further from the finish at 0 claps.

To find the time required to reach the finish, we need to know the total distance, in claps.

6 0
2 years ago
Can someone help me with these problems and show work please !!
Flauer [41]

Answer:

I have just wrote answers

7 0
2 years ago
Plz help......................
nikitadnepr [17]

Answer: A is your aswer hope thsi helped

Step-by-step explanation:

pleas make brainly

4 0
3 years ago
Read 2 more answers
Veena's recipe for bran muffins calls for 2.25 mL of vanilla extract.
diamong [38]

Answer:

2.25x4.7=10.575

Multiply the amount required for one batch by the # of batches

Step-by-step explanation:

7 0
3 years ago
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PLLSSS REALLY URGENT <br> If g(x)=3x+4, determine n that g(-3)=g^-1(n).
grigory [225]

Answer:

we have:

g(-3) = 3.(-3) + 4 = -5

g {}^{ - 1} (n) =  \frac{1}{3n + 4}

because

g( - 3) = g {}^{ - 1} (n)

=>

- 5 =  \frac{1}{3n + 4} \\  \\  <  =  >  - 5(3n + 4) = 1 \\  \\  <  =  >  - 15n - 20 = 1 \\  \\  <  =  > n =  \frac{ - 21}{15}  \\  \\  <  =  > n =  \frac{ - 7}{5}

5 0
3 years ago
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