Please help me asap I don't understand this!!

Given:

In ΔHIJ, h = 40 cm, ∠J=20° and ∠H=93°.

To find:

The length of j, to the nearest centimeter.

Solution:

According to Law of sine,

[tex]\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}[/tex]

In ΔHIJ, using law of sine, we get

[tex]\dfrac{j}{\sin J}=\dfrac{h}{\sin H}[/tex]

[tex]\dfrac{j}{\sin (20^\circ)}=\dfrac{40}{\sin (93^\circ)}}[/tex]

[tex]j=\dfrac{40\times \sin (20^\circ)}{\sin (93^\circ)}}[/tex]

On further simplification, we get

[tex]j=\dfrac{40\times 0.34202}{0.99863}[/tex]

[tex]j=\dfrac{13.6808}{0.99863}[/tex]

[tex]j=13.69958[/tex]

Approximate the value to the nearest centimeter.

[tex]j\approx 14[/tex]

Therefore, the length of j is 14 cm.

Answer:

-4/5

Step-by-step explanation: When you multiply anything by one it is always itself but in this case the one has a negative in front of it so when you multiply a positive number by a negative it makes the number negative.

-1 * 4/5

-4/5

Answer:

x = 18

Step-by-step explanation:

2x/ 3 - 7 = 5 (multiply both sides by 3 to get rid of the 3 under the 2x)

2x - 21 = 15 ( add 21 to both sides)

2x = 36 (divide both sides by 2)

x = 18

HOpe this helps ya!!

Answer:

B

Step-by-step explanation:

x = -3

Means we go 3 units to the left of the origin and draw a vertical line ( up and down)

Answer:

B

Step-by-step explanation:

B because , it would be a straight line and it needs to cross x=-3. Its straight because there's no y. B is the only one that actually has -3 as x so B would be the only correct answer.

Answer:

13

Step-by-step explanation:

13x4=52 that would be in the check section or whatever but she did really good

Answer:

Your sister did the equation perfectly. That's exactly how I would work it, and the answer is 13.

Answer:

a

 [tex]\frac{\alpha }{2} = 2.5 \%[/tex]

b

  [tex]N = 25[/tex]

Step-by-step explanation:

From the question we are told that

   The number of bootstrap samples is  n =  1000

From the question we are told the confidence level is  95% , hence the level of significance is    

      [tex]\alpha = (100 - 95 ) \%[/tex]

=>   [tex]\alpha = 0.05[/tex]

Generally the percentage of values that must be chopped off from each tail  for a 95% confidence interval is mathematically evaluated as

      [tex]\frac{\alpha }{2} = \frac{0.05}{2} = 0.025 = 2.5 \%[/tex]

=>    [tex]\frac{\alpha }{2} = 2.5 \%[/tex]

Generally the number of the bootstrap sample that must be chopped off to produce a 95% confidence interval is

      [tex]N = 1000 * \frac{\alpha }{2}[/tex]

=>   [tex]N = 1000 * 0.025[/tex]

=>   [tex]N = 25[/tex]

Answer:

Step-by-step explanation:

Hey

Answer:

12 Men, 27 men and women together.

Step-by-step explanation:

Well we know there are 15 women. The ratio of men to women is 4:5 so that means every 4 men, there are 5 women. If we divide 15 by 5, we get 3. Now we multiply 3 to the number of men which is 4 because what happens to one part of the ratio then happens to the next. Added together, 12 plus 15 equals 27 so that is the total. Hope this helps!

Answer:

Y=109 X=31

Step-by-step explanation:

Alright, so the angles that you have to find the values for make up 180 degrees. Since you have 71 degrees on the bottom, and according to a certain theorem I forgot about, that means that the angles you're solving for equal 109 degrees.

X= 31 because 4 x 31 = 124 and then 124 - 15 equals 109

Answer and Step-by-step explanation:

We are told that l and k are parallel (which is shown with the || symbol).

Line n therefore, is a transversal (a line that intersects two parallel lines).

We are now told to find y and x.

Since we know the lines are parallel, we can use the vertical angles theorem to say that y is equal to 4x - 15.

With angle 71, we can say that the angle that is to the left of (4x - 15) is also 71. When these two are added together, they equal 180. So let's do that.

71 + 4x - 15 = 180

Subtract 71, add 15, then divide by 4.

4x - 15 = 109

4x = 124

x = 31

31 is equal to x.

Now, we plug it into the equation so that it will equal to y.

4(31) - 15 = y

124 - 15 = y

y = 109

109 is equal to y.

We can verify this by using the supplementary angles theorem for y and 71, when 71 is above y. When y and 71 is added together, they add up to 180. So, 180 - 71 is equal to 109, which is y.

31 is equal to x.

109 is equal to y.

#teamtrees #WAP (Water And Plant) #SPEW (The Society for the Promotion of Elfish Welfare)

Answer:

A

Step-by-step explanation:

edge

[tex]Z_{1} +Z_{2}[/tex] represents Point A i.e., 3i.

Complex numbers are the numbers that are expressed in the form of

a + ib where, a, b are real numbers and  ‘i’ is an imaginary number called “iota”. The value of i = (√-1). For example, 2+3i is a complex number, where 2 is a real number (Re) and 3i is an imaginary number (Im).

Given

The complex numbers z1 and z2 are graphed.

From the graph,

[tex]Z_{1} =3+i[/tex]

[tex]Z_{2} =-3+2i[/tex]

[tex]Z_{1} +Z_{2}= 3+i+(-3+2i)[/tex]

[tex]Z_{1} +Z_{2}= 3-3+i+2i[/tex]

[tex]Z_{1} +Z_{2}= 3i[/tex]

Option A is correct.

[tex]Z_{1} +Z_{2}[/tex] represent Point A i.e., 3i.

Find out more information about complex numbers here

https://brainly.com/question/777332

#SPJ2

Answer:

The value of y=6

Step-by-step explanation:

Given that y varies directly with x

Using the formula

y ∝ x

y=kx

Where k is the constant of proportionality

In order to find 'k' use the given condition

y=8  when  x=20

y=kx

k=y/x  

 = 8/20

 = 2/5

Thus, the equation to find 'y' is

y=2/5x

when x=15 then

y=2/5(15)

 = 6

Thus, the value of y=6

Answer:

Substitute y=x-2y=x−2 into y=-0.5x+4y=−0.5x+4.

x-2=-0.5x+4x−2=−0.5x+4

2 Solve for xx in x-2=-0.5x+4x−2=−0.5x+4.

x=4x=4

3 Substitute x=4x=4 into y=x-2y=x−2.

y=2y=2

4 Therefore,

\begin{aligned}&x=4\\&y=2\end{aligned}

​

​

​​  

​x=4

​y=2

​​  

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

Answer:

5*0.2=1

Step-by-step explanation:

The answer is 0.2

Brainliest pls

Answer:

c

Step-by-step explanation: there's 3 muffins for every 5 pizza pies and there's  9 which is 3 times the muffins and 15 which is 3 times the pizzas

Answer:

56 miles

Step-by-step explanation:

Answer: -56 -17 0 5 34

Step-by-step explanation:

The more left you go on a number line the smaller it is

Answer:

-56,-17,0,5,34

Step-by-step explanation:

negatives are less than the positives so you start with the greatest negative and then go to the positives. The 0 is the origin.

Answer:

y=-x-1

Step-by-step explanation:

1.) equation of line in slope-intercept form: y=4-x

2.) parallel of line is same as: m=-1

3.) equation of parallel line is: y=-x+b

4.) finding b: 4=(−1)⋅(−5)+b

b=-1

5.) therefore, equation is y=-x-1

Answer:

111 is a great place to be your friend

Step-by-step explanation:

I am not it to 3rd or 3rd to be friends

Answer:

220

Step-by-step explanation:

44 divided by 4 = 11

11 times 20 = 220 so that's the answer

BRAINLIEST PLEASE

Answer:

$19.44

Step-by-step explanation:

$108 x 18% = $19.44

Given:

The graph of a function f(x).

To find:

The solution set for f(x)>0 and f(x)≤0.

Solution:

From the given graph it is clear that, the function intersect the x-axis at 3 points, i.e., x=-4, -3 and -2.

The graph is above the x-axis before -4 and between -3 and -2.

So, the solution set for f(x)>0 is [tex](-\infty,-4)\cup (-3,-2)[/tex].

The graph is below the x-axis between -4 and -3; and after -2. For f(x)≤0, those values are in the solution set for which f(x)=0, i.e., x-intercepts. So, we use close brackets in the interval notation.

So, solution set for f(x)≤0 is [tex][-4,-3]\cup [-2,\infty)[/tex].

Answer:

Step-by-step explanation:

The commutative, associative, and distributive properties help you rewrite a complicated algebraic expression into one that is easier to deal with. When you rewrite an expression by a commutative property, you change the order of the numbers being added or multiplied.

Hope this helps!! Please consider marking brainliest! Have a good one!!

Answer:

  ¹9.2

 +7.9

¹ 17.1

 +5.0

 22.1

21.1 miles

Answer:

120

Step-by-step explanation:

Answer:

120

Step-by-step explanation:

first figure out parenthesis

replace n for 1 then you get 13-5, and you get 8.

then you just have to multiply 15 x 8.

then you get 120

Answer:

m = 7/2

Step-by-step explanation:

Brainliest Please!!?!!!!

Answer:

m=7/2

Step-by-step explanation:

Answer:

A: C = 15N

Step-by-step explanation:

30/2 = 15 (the cost of 1 class)

Answer:

I think the answer 165.1 cm tall

Step-by-step explanation:

multiply 2.54 by 65

Answer:

165.10cm

Step-by-step explanation:

i think so

Answer:

It will cost 11 cents a day.

Step-by-step explanation:

1.98/18=11

plzz have brainiest