Triangle P Q R is shown. The length of P Q is 17, the length of Q R is 15, and the length of P R is 14.
Law of cosines: a2 = b2 + c2 – 2bccos(A)
What is the measure of Angle P to the nearest whole degree?

the thermometer is precise but not accurate

step-by-step explanation:

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

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3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !