Answer:
<h3>
present age of son = 10 </h3><h3>
present age of father = 40</h3>
Step-by-step explanation:
Let, present age of son be 'x'
present age of father be 'y'
y = 4x→ equation ( i )
After five years,
Son's age = x + 5
father's age = y + 5
According to Question,
Put the value of y from equation ( i )
Distribute 3 through the parentheses
Move variable to L.H.S and change it's sign
Similarly, Move constant to R.H.S. and change its sign
Collect like terms
Calculate the difference
Now, put the value of X in equation ( i ) in order to find the present age of father
plug the value of X
Calculate the product
Therefore,
Present age of son = 10
present age of father = 40
Hope this helps..
Best regards!!
It’s c I think sorry if I’m wrong, I did this lesson long time ago
Answer:
The integer that representes the draining of 15 gallons of water from a fish tank is
Step-by-step explanation:
The gallon is a capacity (volume) units. The draining means that a part of the tank capacity occupied by water is removed. Then, the change in tank capacity is equal to a negative integer. That is:
Where:
, - Initial and final capacities in the fish tank, measured in gallons.
Hence, the integer that representes the draining of 15 gallons of water from a fish tank is
Answer:
4. 11
5. -11
6. ± 5
Step-by-step explanation:
4. (g - h)(x) = x² - 1 - ( -2x +3) = x² - 1 + 2x -3 = x² +2x -4
(g - h)(3) = 3² + 2.3 - 4 = 9 + 6 - 4 = 11
5. (h-g)(x) = -2x + 3 - (x² - 1) = -2x + 3 - x² + 1 = -x² - 2x + 4
(h-g)(3) = -3² - 2(3) + 4 = -9 -6 +4 = -11
6. g(x) = 24
24 = x² - 1
x² = 24 + 1 = 25
x = √25 = ± 5