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kobusy [5.1K]
2 years ago
12

What is the value of cos(x/2) if tan x=1/2 and x is in quadrant III

Mathematics
2 answers:
inysia [295]2 years ago
7 0

Answer:

Step-by-step explanation:

Alexus [3.1K]2 years ago
3 0

Answer:

The answer is A

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20th term of 12, 15, 18, 21
Rainbow [258]

Answer:

69

Step-by-step explanation:

The rule: 3n+9

n=20

3(20)+9

60+9

69

7 0
3 years ago
Please solve for the maximum value <br><br> f(x) = -2x^2 - 12x - 16
Natasha2012 [34]

Answer:

-2(x+4)(x+2)

Step-by-step explanation:

thats the answerer

7 0
3 years ago
What is the difference between adding whole numbers and adding decimals?
noname [10]

Answer:

The only difference is that we line up the numbers according to the decimal point. For addition, it doesn't matter which number goes on the bottom.

4 0
2 years ago
Hamburger sells 3 pounds for six dollars if Samantha 510 pounds of hamburger how much will she pay
Lina20 [59]
I believe you meant to say that if Samantha bought 510 pounds of hamburger, how much will she pay?
 
Now from the information we already have, we know that 3 pounds of hamburger will cost 6 dollars. 

The next thing we need to know is how much one pound of hamburger will cost. This will help us calculate  how much the rest will cost.

we now form an equation to assist us.
3 = 6
1= x

(where x represents the unknown price of one pound of hamburger)

Now we must cross-multiply:

3 * x = 6 x 1

3x = 6 

x = 6/3

x = 2

therefore one pound of hamburger costs 2 dollars.

Now, If one pound costs 2 dollars, how about 510 pounds?

We simply multiply:  510 x 2 = 1,020

Therefore  Samantha will pay 1, 020 dollars for 510 pounds of hamburger.






5 0
3 years ago
X/a + b = c solve for x
podryga [215]

Answer:

x = a(c-b)

Step-by-step explanation:

x/a + b = c

      -b    -b

       x/a = c - b

times a      times a

x = a(c-b)

8 0
3 years ago
Read 2 more answers
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