#1
(56,7) is the co-ordinate of point B.
#2
(56,7)
It means that the ball has travelled 56yards .it is at the height of 7ft.
Answer:
Step-by-step explanation:
6x=1/2(2x +7) Multiply both sides by 2
2*6x = 1/2(2x + 7)*2
12x = 2x + 7 Subtract 2x from sides
12x-2x =2x-2x+7
10x = 7 Divide by 10
x = 7/10
x = 0.7
Let's check it
6(0.7) = 4.2
1/2 (2*0.7 + 7)
1/2 (1.4 + 7)
1/2 ( 8.4)
4.2
Both sides check. The answer must be x = 0.7
Percent means per one hundred so we can say:
n(20/100)=100
n(1/5)=100
n=500
So 20% of 500 is 100.
check...
500(20/100)
500(1/5)
500/5
100
Answer: the magnitude of a real number without regard to its sign.
Step-by
<h3>Answer: 22 degrees</h3>
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Explanation:
Use the law of cosines to isolate angle A
a^2 = b^2 + c^2 - 2*b*c*cos(A)
3^2 = 5^2 + 7^2 - 2*5*7*cos(A) ... plug in a=3, b=5, c=7
9 = 25 + 49 - 70*cos(A)
9 = 74 - 70*cos(A)
74 - 70*cos(A) = 9
-70*cos(A) = 9 - 74 .... subtract 74 from both sides
-70*cos(A) = -65
cos(A) = -65/(-70) ... divide both sides by 70
cos(A) = 13/14
A = arccos(13/14) .... apply the arcosine function to both sides
A = 21.7867892982619
This rounds to 22 degrees