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butalik [34]
3 years ago
12

I need help on 11, 12 and 13 please ... :(

Mathematics
1 answer:
Lynna [10]3 years ago
6 0
Question 11= B
Question 13= C
I don't know how to do question 12
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Please help!<br> i will reward brainliest
drek231 [11]

Answer:

37.9 degrees

Step-by-step explanation:

Using the law of sines, \frac{\sin(m\angle C)}{21}=\frac{\sin(47^\text{o})}{25}. It follows that \sin (m\angle C) = \frac{21\sin(47^\text{o})}{25} \approx 0.6143371. Therefore, m\angle C = \sin^{-1}(0.6143371)=37.9^\text{o}.

6 0
3 years ago
Read 2 more answers
(8v3-80v2+6)\(v-10)
Leto [7]

\frac{(8v^3-80v^2+6)}{v-10}

Use long division for dividing

(8v^3-80v^2+6) Here 'v' term is missing so we use 0vW

Divide (8v^3-80v^2+0v+6) by v-10 using long division

Step 1: Put 8v^2 at the top

step 2: multiply 8v^2 with v-10  and put it at the bottom

step 3: subtract it

We will get remainder 6

so quotient is  8v^2

Remainder is 6


8 0
3 years ago
The length of a rectangle in centimeters is two more than thrice its width. a) Write an expression, in the simplest form, for th
Karo-lina-s [1.5K]

Answer:

Perimeter of the rectangle = 8 x +4

Length of the rectangle = 12 units.

Step-by-step explanation:

Let the width of the rectangle as 'x' units.

So, length of the rectangle is 2 more than 3 x.

We can set up expression for length as 3 x+2.

Now, perimeter is sum of all side lengths of the rectangle.

So, perimeter = x+x+3 x+2 +3 x+2

Combine like terms,

Perimeter = 8 x+4

Now, it is given perimeter is 36cm

So,

8 x+4=36

Subtract both sides 4

8 x=32

Divide both sides by 8

x=4

So, width of the rectangle =4

Length =3(4) +2=14

3 0
3 years ago
Giving brainliest whoever answers this question first, please help
vladimir2022 [97]
The question is there
6 0
2 years ago
Fill in the blank to complete the sentence. A square with area 49 cm² has perimeter cm ok 2 Asquare with area 49 cm? has perimet
klasskru [66]

Answer:

7 cm

Step-by-step explanation:

it is a square so sqrt(49)=7, and the side lengths are 7

7 0
2 years ago
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