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Harrizon [31]
3 years ago
9

Can someone help me out with number 2?

Mathematics
1 answer:
Norma-Jean [14]3 years ago
5 0
\sin255^o=\sin(300^o-45^o)=\sin300^o\cos45^o-\cos300^o\sin45^o= \\\\=- \frac{ \sqrt{3} }{2}\cdot  \frac{ \sqrt{2} }{2}- \frac{1}{2} \cdot  \frac{ \sqrt{2} }{2}=-      \frac{ \sqrt{6} }{4} -  \frac{ \sqrt{2} }{4}=  -\frac{  \sqrt{6}+\sqrt{2} }{4}

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Korolek [52]

Answer:

12:16

Step-by-step explanation:

Add the miniature balls.

3 + 9 = 12

There are 16 black marbles in the jar.

Therefore, the ratio of miniature balls to the number of black marbles is 12:16.

8 0
3 years ago
Write the ratio of height of the building to the number of floors.​ Then, find the unit​ rate, and explain what it means in this
kicyunya [14]

Answer:

144:9

16

16 ft high

Step-by-step explanation:

Easy...could also be written as 144/9 or 144 to 9

Divide

Same thing

Hope this helps. Have a nice day

4 0
2 years ago
Read 2 more answers
Add. Write your answers in simplest form.<br><br>10 1/6+12 1/10
Scrat [10]
334/15 also known as 22.26
5 0
3 years ago
The sum of 12 and the product of 9 and a number results in 57
xxTIMURxx [149]
If i read this correctly then the answer would be 
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7 0
3 years ago
Read 2 more answers
Question 1 (10 points)
Irina18 [472]

Answer:

Q1 d, Q2 c, Q3 d

Step-by-step explanation:

Q1

g(x)=-3x+1

g(x)=16 means that

-3x+1=16 subtract 1 from both sides

-3x=16-1 combine like terms and divide both sides by -3

x=-15/3=-5

Q2

g(x)=3x²+4x-1

g(2) means that x=2 so substitute

g(2)=3*2²+4*2-1=12+8-1=19

Q3

domain are the x values

range are the y values

8 0
3 years ago
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