Given:
The height of an object, f(x), after x seconds is
To find:
The time taken be object to hit the ground.
Solution:
We have,
The object will hit the ground if the height is 0, i.e., f(x)=0.
Divide both sides by 2.
Taking square root on both sides.
Time cannot be negative. So, x=4.
Therefore, the object will hit the ground after 4 seconds.
We know, 1 yard=3 feet.
1 feet =12 inches.
Therefore, 1 yard in inches is,
Hence, 3 yards in inches is.,
Therefore, 3 yards is greater than 107 inches.
Answer:
The number is -79.
Step-by-step explanation:
Let's set up equation for the given information.
Let the number as 'x'
Negative 1 times the sum of one and seven times a number x could be written as -1(1+7 x).
Now, 6 times the difference of negative seven and a number could be written as
6(-7-x)
Now,
-1(1+7 x) decreased by 6(-7-x) equals 36
So, we can set up equation as
-1(1+7 x)-6(-7-x)=36
Solve the equation for x
-1-7 x-42+6 x=36
Combine like terms
-x-43 =36
Add both sides 43
-x=79
Divide both sides by -1.
x=79
what is the average cost of 7 articles if 3 of them cost 30k each and the rest cost 12.5k each
TOTAL NUMBER OF ARTICLE= 7
ARTICLES FOR 30K = 3
ARTICLES FOR 12.5K = 7-3= 4
Average cost of 7 articles
Answer:
The system would be:
4x + 2y = 140
2x + 3y = 150
Step-by-step explanation:
If we represent the cost of sweats by the letter x and the jeans by the letter y, we can then write an equation for each of the situations using the number of each in each situation.
4x + 2y = 140
2x + 3y = 150
