All categories

2 years ago

Find c. Round to the nearest tenth: 2 cm 15° 105

Mathematics

2 answers:

Anit [1.1K]2 years ago

4 0

Answer:

0.5cm

Step-by-step explanation:

Using the sine rule

baherus [9]2 years ago

4 0

Answer:

c = 0.5 cm

Step-by-step explanation:

Using the Sine rule in the triangle, then

$\frac{c}{sin15}$ = $\frac{2}{sin105}$ ( cross- multiply )

c × sin105° = 2 × sin15° ( divide both sides by sin105°

c = $\frac{2sin15}{sin105}$ ≈ 0.5 cm ( to the nearest tenth )

You might be interested in

HELP PLEASE!!!!! WILL MARK AS BRAINLIEST!!!!

expeople1 [14]

ASA we need a second angle that is next to the side

SAS we need a side next to the angle

Choice B

5 0

3 years ago

7. The length of a rectangle is 3 centimeters less than twice its width. The perimeter of the rectangle is 48 cm. What are the d

irga5000 [103]

The answer is b

The perimeter of a rectangle is 2(l + w) so in this case, it is 2(15 + 9) and that is equal to 48. But so at c and d. So u need to multiply the width by 2 (9*2=18) and then you’ll see that 18-3=15. And therefore, the length is -5 and the width is 9

5 0

3 years ago

Which of the following is the correct expansion of (3x-y)2

Studentka2010 [4]

$\bold{[ \ Answer \ ]}$

$\boxed{\bold{9x^{2} \ - \ 6xy \ + y^{2} }}$

$\bold{[ \ Explanation \ ]}$

$\bold{Find \ Expansion: \ (3x \ - \ y^{2} )}$

$\bold{----------------------}$

$\bold{[Apply \ Perfect \ Square \ Formula\ (\left(a-b\right)^2=a^2-2ab+b^2)] \ a \ = \ 3x, \ b \ = \ y}$

$\bold{\left(3x\right)^2-2\cdot \:3xy+y^2}$

$\bold{[Simplify \ \left(3x\right)^2-2\cdot \:3xy+y^2] \ 9x^2-6xy+y^2}$

= $\bold{9x^2-6xy+y^2}$

$\boxed{\bold{[] \ Eclipsed \ []}}$

3 0

3 years ago

What volume of ice cream is contained in a 10 cm-high ice cream cone with a base radius of 4 cm?

Ivahew [28]

Volume of a cone= $\pi r ^{2} \frac{h}{3}$
When you calculate it, you will get 167.55
Then you will round that to 168.
So, the answer is D. 168 cubic cm

8 0

3 years ago

Need some help im not smart

zlopas [31]

Sure your smart Its just not your subject....School isn't my thing but you put me out into the woods and i could survive weeks with nothing...Lol just find your nitch and be proud of it

6 0

3 years ago