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Naya [18.7K]
3 years ago
5

Can someone help me???

Mathematics
2 answers:
cestrela7 [59]3 years ago
7 0

Answer:

Cos (5π/3)

Cos (π/6)I think this one

Lemur [1.5K]3 years ago
6 0

Answer:

Below in bold.

Step-by-step explanation:

The sine is positive in the first and second quadrants and negative in other 2.

The cosine is positive in the first and 4th quadrants and negative in other 2.

Note that sin(pi/6) = 1/2 and cos(pi/3 = 1/2).

sin(7pi/6) = 1/2  

cos(5pi/3) = 1/2

sin(5pi/6) = 1/2

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Answer these series of events
Alchen [17]

Answer: A= 34

             B=  25

             C=  -30

             D= -25

             E=  -1.3

             F= 0.6 repeating or rounded to the nearest tenth place 0.7

Hope this helps!



Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
Which Graph correctly solves the equation below? -1/2x^2 +2 = 2x^2 -8
lubasha [3.4K]

Answer:

see attachment

Step-by-step explanation:

The given equation is

-  \frac{1}{2}  {x}^{2}  + 2 = 2 {x}^{2}  - 8

The graph of the left hand side of this equation is

y =  -  \frac{1}{2}{x}^{2}  + 2

This quadratic graph has its vertex at (0,2) and turns upside down.

The right hand side of the equation is

y = 2 {x}^{2}  - 8

This quadratic graph opens upwards and has its vertex at (0,-8).

The two graphs intersects at two points , which are (-2,0) and (2,0).

6 0
3 years ago
Simply the expression 2(6+3n)-4
Ronch [10]

Answer:

8+6n

Step-by-step explanation:

First, distribute the 2 into the parenthesis.

2(6)+2(3n)-4

Then, multiply the numbers.

12+6n-4

Now add(subtract in this case) the common multiples.

12-4= 8

8+6n

Since you can no longer simplify the equation, this is the answer..

8+6n

3 0
3 years ago
WILL GIVE BRAINLIEST find the y-intercept of the parabo;a y= -33/4 x^2 + 4
valentinak56 [21]

Answer:

The y-intercept is (0, 4)

  1. Since the y-intercept marks the point where x =0, all that you have to do is substitute 0 in for x in the parabola's equation.

Please Mark Brainliest If This Helped!

6 0
2 years ago
What is the length of a rectangle with an area of 8/10 square feet and a width of 2 1/4
crimeas [40]

Answer:

The length of the rectangle=16/45 feet

Step-by-step explanation:

The area of a rectangle is given by;

A=L×W

where;

A=area of the rectangle

L=length of the rectangle

W=width of the rectangle

In our case;

A=(8/10) square feet

L=unknown

W=2 1/4 feet=9/4 feet

replacing;

8/10=l×9/4

l=8/10×4/9

l=16/45 feet

The length of the rectangle=16/45 feet

3 0
3 years ago
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