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Snowcat [4.5K]
4 years ago
8

A=2 b=2 c=1 Find the value of 2abcosC

Mathematics
1 answer:
mel-nik [20]4 years ago
6 0

Answer:

2abCosC = 1

Step-by-step explanation:

The cosine rule is

=> a^2= b^2+c^2-2abCosC

For 2abCosC, it becomes

=> 2abCosC = b^2+c^2-a^2

=> 2abCosC = (2)^2+(1)^2-(2)^2

=> 2abCosC = 1

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schepotkina [342]

Answer:

2,3, and 4

Step-by-step explanation:

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3 years ago
Identify the solutions (roots) of the function y=x2 + 2x - 3​<br><br>please help
asambeis [7]

Answer:

x=1,-3

Step-by-step explanation:

7 0
3 years ago
Hello! So, Given the equation y = 2x - 8, what is the slope and the y-intercept? Please help with a good explanation of how you
elena55 [62]

Answer:

m = 2 and b = -8.

Step-by-step explanation:

One of the most commonly used equations of straight lines is y = mx + b, where m is the slope and b is the y-intercept.

Comparing the given y = 2x - 8 to y = mx + b, we see that m = 2 and b = -8.

3 0
4 years ago
Read 2 more answers
this is a clear picture from the last one. can u show me the steps of how u worked out the answer plz
azamat

One piece at a time:

4(p+2) means 4 times everything inside the parentheses.
That's 
               4(p)  +  4(2)  =  4p + 8 .

3(2p-3) means 3 times everything inside the parentheses.
That's   
               3(2p)  +  3(-3)  =  6p - 9 .

Now add everything up:

               4p + 8 + 6p - 9 .

Add all the p's together:   4p + 6p = 10p

Add all the plain numbers together:   8 - 9 = -1

The final result is:        10p - 1 .

4 0
3 years ago
The scatter plot shows the amount of time Oscar played and the number of points he scored during each basketball game. Which des
Andru [333]

Answer:

Positive, linear equation.

Step-by-step explanation:

Even though the graphs coordinates looks a little dicey, all of the points are still going upward which is a positive linear equation.

8 0
3 years ago
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