All categories

2 years ago

NO MULTIPLE CHOICE Find the length of AB label sides find angles HELP ME PLEASE

Mathematics

2 answers:

Ugo [173]2 years ago

7 0

Answer:

8.4 (rounded to 1 dp)

Step-by-step explanation:

1) Identify the number of angles and sides given if you cannot use Pythagoras or SohCahToa.

2) You have 2 angles and 1 side, so you know you must use sine rule: a over sinA = b over sinB

a = side length, sin(A) = angle opposite side

b = side length, sin(B) = angle opposite side

3) This means:

13/sin(90) = x/sin(40)

4) rearrange for x:

x = 13/sin(90) * sin(40)

= 8.356...

5) Round to however many sig figs/dps they're asking for

Example: 1 dp

AB = 8.4

3 sig figs

AB = 8.36

valkas [14]2 years ago

3 0

Answer:

Step-by-step explanation:

8.4 (rounded to 1pd)...........

You might be interested in

Moving the decimal point to the right 4 places in a number is the same as _____.

Nutka1998 [239]

Answer: dividing by 10000

Step-by-step explanation: because 10000 has 4 zeros

4 0

2 years ago

Read 2 more answers

Consider the line y=-4x+5.

Eddi Din [679]

Answer: y=-4x-13

Step-by-step explanation:

To find the parallel line, we know that the slope must stay the same. Parallel lines NEVER touch or cross. Therefore, the slope MUST be the same. All we have to do is to find the y-intercept by plugging in the given point.

-5=-4(-2)+b [multiply]

-5=8+b [subtract both sides by 8]

b=-13

Now, we know that the equation is y=-4x-13.

6 0

3 years ago

môt lâm trường lập kế hoạch trồng 1 số ha rừng, theo đó mỗi tuần lâm trường phải trồng 15ha. Trên thực tế nhờ cải tiến kĩ tuật,

Lina20 [59]

Step-by-step explanation:

mình nghĩ là như vầy. Chúc bạn học tôt :))))

8 0

2 years ago

Rapido porfa es para hoy. Convierta 0.80 Megagramos a picogramos.

gtnhenbr [62]

Answer:

8 * 10^17 Picogramos

Step-by-step explanation;

El 17 es un exponente. Creo que debes de tartar de tener la tabla de conversion y se te hara mas facil :)

3 0

2 years ago

How many solutions does 4(y-30)=4y+12

Anit [1.1K]

$\text{Solve for y:}\\\\4(y-30)=4y+12\\\\4y-120=4y+12\\\\\text{Subtract 4y from both sides}\\\\-120=12\\\\\text{You would see that the y variable is now non-existent}\\\\\text{This means that there are no solutions}\\\\\boxed{\text{No solutions}}$

8 0

2 years ago