1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elena L [17]
3 years ago
6

Can someone please help me please help me I really need help please help me .

Mathematics
2 answers:
Mariulka [41]3 years ago
5 0

Answer:

B) sin(\alpha )

Step-by-step explanation:

sin(90-0)=Cos(0)

Cos(90-0)=sin(0)

So...

Cos(90-\alpha )= sin(\alpha )

------------

hope it helps...

have a great day!!

pochemuha3 years ago
3 0

Answer:

cos(90°-a)

since it lies in first quadrant

sina

your option is B.sin(a)

You might be interested in
Plz help me this is for tomorrow waited last minute
soldi70 [24.7K]
Angle a =40° beacuse they are vertical angle
b will be 180- 40+90=50°
c is making supplementry angle with 65 so c+65=180
c=115°
8 0
4 years ago
Multiplication mod 29 by 30 is equivalent to standard multiplication by ___
arsen [322]
The awnser will be 870.
4 0
3 years ago
An analytical laboratory is asked to evaluate the claim that the concentration of the active ingredient in a specimen is 86%. Th
Olenka [21]

Answer:

Decision rule

   Reject null hypothesis

Conclusion

There is significance evidence that the true mean is different from 0.86

Step-by-step explanation:

From the question we are told that

  The population mean   \mu  = 0.86

   The  sample is  mean is \=  x  =  0.8708

  The standard deviation is  \sigma =  0.0068

The  level of significance is  \alpha  =  0.01

  The  sample size n =  3

The null hypothesis is  \mu =  0.86

The alternative hypothesis  is \mu \ne  0.86

Generally the test statistics is mathematically represented as  

    z =  \frac{\=  x  - \mu }{ \frac{\sigma}{\sqrt{n} } }

=> z =  \frac{ 0.8708 - 0.86 }{ \frac{0.0068}{\sqrt{3} } }

=>  z =  2.751  

Generally  p- value is mathematically represented as

       p-value =  2 P(z >2.751   )

From the z-table  

        P(z >2.751 ) =  0.0029707

So

     p-value =  2 *  0.0029707

=>   p-value =  0.00594

From the obtained question we see that  p-value  <  \alpha

Hence we reject the null hypothesis

 

6 0
3 years ago
A pink crayon is made with 12 mL of red wax for every 5 mL of white wax.
11111nata11111 [884]

Answer:c

Step-by-step explanation:

7 0
3 years ago
100 POINTS HELP ME PLEASE!!!!! WILL MARK YOU BRAINIEST!!!!!!
Dimas [21]

We just need to find the area of the parallelogram and the triangle, and then add.

Parallelogram: The area is base times height. So, we can write 4 * 6 = 24 in^2.

Triangle: The area is base times height divided by two. So, it's 4 * 6 / 2 = 12 in^2.

24 + 12 gives us an answer of 36 inches squared.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which real-world context could be represented by 9 +(-4) + 3?
    10·1 answer
  • What are zeros of f(x)=x^2-3x-18. and please explain so I can see if I can understand.
    11·1 answer
  • A random sample of 1003 adult Americans was asked, "Do you think televisions are a necessity or a luxury you could do without?"
    9·1 answer
  • Solve the Equation: √3x-12=0
    9·2 answers
  • Please answer anyone you can will appreciate it
    9·1 answer
  • Which speed is the fastest?
    8·2 answers
  • PLEASE HELP, 5 STARS!!!
    7·1 answer
  • Find the distance between the points (-4,-1) and (0,-2).
    5·1 answer
  • All students = 700
    8·1 answer
  • The exam scores in Bryan's class are Normally
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!