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Gelneren [198K]
2 years ago
5

Find the missing side. Need help please.Need to know how to get the answer.

Mathematics
1 answer:
Rufina [12.5K]2 years ago
4 0

Answer:

x=7.12

Step-by-step explanation:

This is a trigonometry problem so you would use sin cos or tan.   and in this case we need to use sin.  

An acronym I use to help me remember is is sohcahtoa

so sin= opposite / hypotenuse

and that means sin(22)= x/19

we then plug in sin (22) in out calculator and get around .37

then we can use algebra and multiply .37 by 19 to get our x value

.37(19)=x

x=7.12

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brian irons \dfrac29 9 2 ​ start fraction, 2, divided by, 9, end fraction of his shirt in 3\dfrac353 5 3 ​ 3, start fraction, 3,
julsineya [31]

At this rate, Brian plans 10/162 of his shirt.

The speed for which Brian iron the shirts is given by

        \frac{2}{9}/\frac{18}{5} = \frac{x}{1}

Cross multiply to get

        \frac{2}{9} =\frac{18}{5}x

Multiply both sides by 5/18 to solve for x.

         \frac{10}{162} = \frac{5}{31}

At this rate, Brian plans 10/162 of his shirt.

learn more Cross multiply :brainly.in/question/34341065

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2 years ago
Solve the inequality (picture)
drek231 [11]

Answer:

3rd choice

Step-by-step explanation:

Add 6 to both sides to get 5x >= 15, or x >=3. This is the 3rd choice.

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3 years ago
HELP ASAP WHICH FUNCTION BELOW HAS THE GREATER RATE OF CHANGE THX AND PLZ
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B

Step-by-step explanation:

B has a slope of 7 while A has a slope of 6.

slope of B 14-7/2-1 = 7

A slope is y= mx+b and m is the slope. so 6.

4 0
2 years ago
25 points + brainly please answer quick
TiliK225 [7]

Answer:

use the pythagoras theorem

Step-by-step explanation:

4^{2} = 2^2 + (2\sqrt{3})^2\\  16 = 4 + 12\\16 = 16\\hence they are the sides of right angled triangle

6 0
3 years ago
Read 2 more answers
Cynthia Besch wants to buy a rug for a room that is 24 ft wide and 33 ft long. She
qaws [65]
<h3>Answer:   16 ft by 25 ft</h3>

=========================================================

Explanation:

Refer to the diagram below.

The outer dimensions 24 ft and 33 ft shrink down to 24-2x ft and 33-2x ft respectively. This subtraction of 2x is due to subtracting two copies of x per side.

The carpet has area of (24-2x)(33-2x)

Cynthia can afford to buy 400 sq ft of carpet

So we set 400 equal to that previous expression and solve for x

(24-2x)(33-2x) = 400

24(33-2x) - 2x(33-2x) = 400

792-48x - 66x + 4x^2 = 400

4x^2 - 114x + 792 = 400

4x^2 - 114x + 792-400 = 0

4x^2 - 114x + 392 = 0

From here, use the quadratic formula to isolate x.

Plug in a = 4, b = -114, c = 392

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(-114)\pm\sqrt{(-114)^2-4(4)(392)}}{2(4)}\\\\x = \frac{114\pm\sqrt{6724}}{8}\\\\x = \frac{114\pm82}{8}\\\\x = \frac{114+82}{8} \ \text{ or } \ x = \frac{114-82}{8}\\\\x = \frac{196}{8} \ \text{ or } \ x = \frac{32}{8}\\\\x = 24.5 \ \text{ or } \ x = 4\\\\

The two possible solutions are x = 24.5 and x = 4

But if x = 24.5, then 24 - 2x = 24 - 2*24.5 = -25 which isn't possible. We cannot have a negative width or negative length for the carpet.

Luckily x = 4 does work since

24 - 2x = 24 - 2*4 = 16

33 - 2x = 33 - 2*4 = 25

Both results are positive.

Therefore, the carpet has dimensions of <u>16 ft by 25 ft</u>

Check: 16*25 = 400, so the answer is confirmed

5 0
1 year ago
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