Answer:
4+5=9
Step-by-step explanation:
a2+b=9
Two negatives equal a positive you multiply 2, 2 times because of the power 2.
Answer:
The equation that will determine the cost of two folders is; 3x = 2× $2.91
and the cost of the 2 folders is $1.94
Step-by-step explanation:
To solve this problem, we will follow the steps below;
Using proportion;
Let x be the cost of 2 folders
3 folders = $2.91
2 folders = x
Cross-multiply
3x = 2× $2.91
The equation that will determine the cost of two folders is
3x = 2× $2.91
We can go ahead and solve
3x = $5.82
Divide both-side of the equation by 3
= 
x = $ 1.94
The cost of 2 folders is $1.94
Answer: 18
Step-by-step explanation:
subtract 5 - 7; since that's not possible make the 3 into a 2 and add a 1 in front of the 5; now do 15-7 = 8. 2-1 =1 ----> 18
You need to memorize how to factor cube roots, i.e. x^3 - y^3 or x^3 + y^3.
You left a + or - sign out but:
Here you have the difference of 2 cubes.
Then (3x - 4)( 9x^2 + 12x + 16)
or (3x+ 4)( 9x^2 - 12x + 16)