Answer:
3 * (x + 7)
Step-by-step explanation:
Mark number as x
Then the sum of a number and seven is x + 7
Three times x + 7 can be written as
3 * (x + 7)
Parentheses mean that we first add x and 7 and then multiply their sum by 3
Alternatively you can write it as 3x + 21, since
3 * (x + 7) = 3 * x + 3 * 7 = 3x + 21
Answer:
29.71
Step-by-step explanation:
8+6+5pi
14+15.71
29.71
15.71 is approx 5pi
Hope this helps
Perimeter=Side a+Side b+Side c
Answer:
9 : 3
Step-by-step explanation:
To get from 21 to 3 we divided 21 by 7, therefore we have to do the same to the other side and so we get...
63 / 7 = 9
Therefore 63 : 21 = 9 : 3
For this case, the gravitational force is given by:
F = m * g
Where,
m: mass of the object
g: acceleration due to gravity
Substituting values we have:
F = (100) * (9.8)
F = 980 N
Answer:
The gravitational force that is pulling the object to the center of the Earth is:
F = 980 N
