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alex41 [277]
2 years ago
7

Find the missing side lengths. Leave your answers as radicals in simplest form. Please help!! Due today

Mathematics
1 answer:
Nataly_w [17]2 years ago
5 0

Answer:

m = 10\sqrt 3

n = 10

Step-by-step explanation:

Required

Find m and n

Considering the given angle, we have:

\sin(60) = \frac{Opposite}{Hypotenuse}

This gives:

\sin(60) = \frac{m}{20}

Make m ths subject

m = 20 * \sin(60)

\sin(60) =\frac{\sqrt 3}{2}

So, we have:

m = 20 *\frac{\sqrt 3}{2}

m = 10\sqrt 3

Considering the given angle again, we have:

\cos(60) = \frac{Adjacent}{Hypotenuse}

This gives:

\cos(60) = \frac{n}{20}

Make n the subject

n = 20 * \cos(60)

\sin(60) =\frac{1}{2}

So, we have:

n = 20 *\frac{1}{2}

n = 10

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The figure below shows a shaded rectangular region inside a large rectangle:
pshichka [43]

Answer:

b. 58%

Step-by-step explanation:

Calculate the area of the entire rectangle using the formula A = lw.

The lowercase "L" is for length.

"w" is for width.

The lighter square is 10 units long by 5 inches wide.

A = lw

A = (10 in)(5 in)   Multiply

A = 50 in²

Calculate the area for the shaded rectangle, 7 inches by 3 inches.

A = lw

A = (7 in)(3 in)    Multiply

A = 21 in²

Calculate the area for the non-shaded region by subtracting the shaded area from the total area.

50 in² - 21 in² = 29 in²

The chance that a point in the large rectangle will NOT be in the shaded region is 29/50.

Convert this fraction to decimal form by using a calculator. Divide the top number by the bottom number.

29/50 = 0.58

0.58 is in decimal form. To convert it to a percentage, multiply the number by 100.

0.58 = 58%

Therefore the probability that a point chosen inside the large rectangle is not in the shaded region is 58%.

5 0
3 years ago
In the right triangle, angle B equals 60° and AB equals 18<br><br>How long is AC? <br>I'm stuck!
svlad2 [7]

Answer:

AC = 15.588

Step-by-step explanation:

(all rounded to nearest thousandth)

sin(60) = x/18

first solve: sin(60) = 0.866

0.866 = x/18

multiply 18 on both sides

x = 15.588

3 0
3 years ago
What is the exact value of BC?<br>A. 3.16<br>B. 5\|2<br>C. 7.07<br>D. 25<br>​
Natalija [7]

Answer:

C. \:  \:  7.07

Step-by-step explanation:

Coordinates of B are

(5,5)

Coordinates of C are

(4, - 2)

Distance between two points

\sqrt{({x_2 - x _1 {)}^{2} + (y_2 - y_1 {)}^{2} }}

Distance of BC

\sqrt{(4 - 5) {}^{2} + (  - 2   - 5 {)}^{2}  }

\sqrt{ { (- 1}^{2})  +  ({ - 7}^{2}) }

\sqrt{1 +49 }

\sqrt{50}

7.07

3 0
2 years ago
1 A lawnmower that regularly sells for $200 is on sale for $85. Find the % of change that the price was decreased by ??? percent
Airida [17]

Answer:

The price changed by 92.5 %

Step-by-step explanation:

The regular price of lawn mover = 200 dollars

The new selling price = 85 dollars

Change in selling price = 200 -85 dollars = 115 dollars

% change == \frac{185}{200} * 100 = 92.5

The price changed by 92.5 %

4 0
3 years ago
Debra pumped 2 gallons of water into her pool each minute for 10 minutes. Whag was ths total change in the amount of water in th
FinnZ [79.3K]
20 gallons of water in the pool
8 0
3 years ago
Read 2 more answers
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