Answer: the answer is 36
Step-by-step explanation:
we can solve this using an algebra equation
so first from the world problem, we can tell that mother and daughter's ages added together is 45 we can represent this by saying x (mother's age), plus y (daughter's age) is 45.
(x+y)=45
Then we from the problem we know that 5 years ago the product of their ages is four times the mother's age at that time. From this, we can write
(x-5)*(y-5)=4*(x-5)
Then we just subtract the common denominators which is (x-5) so then the equation becomes
(y-5)=4
add 5 to both sides
y=9
Then all we do is plug the answer for y into the very first equation
x+9=45
Subtract both sides by 9
x=36
To double-check let's put the answers in the second equation
(36-5)*(9-5)=4*(x-5)
we get
(31)*(4)=4*(31)
so it's right I think
Answer:
x>-9
Step-by-step explanation:
Answer:
A D E
Step-by-step explanation:
A) The formula for the area of a triangle is 
D) The base is 8 and the height is 14 so the area of the triangle is 56 meters squared.
E) Volume is 
meters cubed.
Have a nice day :)
D. Rigid transformations were applied therefore not changing any of the shapes values.
(5x³-7)(2x²+1)
OPTION D is the correct answer
