Answer:
3x
Step-by-step explanation:
givens: x=4
now try your options:
3(4)+3=15
12+3=15
15=15
The first option is correct, therefore the answer is 3x
Polygon, 3 straight sides
Answer:
$7.13
Step-by-step explanation:
There is 3 people and they need to SPLIT the cost. Split means divide in this situation. So, divide 21.39 by 3 and you should get 7.13.
Answer:
$51.2
Step-by-step explanation:
3 + 4 + 1 = 8
8 x 6.40 + 51.2
Answer:
49N
Step-by-step explanation:
Step one
Given
When the force of 63 N acts on a certain object
the acceleration of the object is 9/ms^2
Firstly, we need to calculate the mass m
F=ma-------1
m= F/a
m= 63/9
m= 7kg
Step two:
Also, if the acceleration of the object becomes 7 m/s^2
then the force
Note: the mass remains the same= 7kg
F=ma
F=7*7
F= 49N
