<span>a) a/b+c/d=(a+c)/(bd)
This is incorrect (unless b=1 and d=1) because a/bd
does not equal a/b and c/bd does not equal c/d
.
b). a/b+c/d=(a+c)/(b+d)
This is incorrect because you cannot add fractions </span><span>merely by adding numerators and denominators.
</span><span>c). a/b+c/d=(ad+bc)/(bd)
This is correct:
ad + bc/ bd = ad + bc/ bd</span>
Part A: The algebraic equation for the situation is 2x - 3 = 5
Part B: Bob has 4 brand new music CD's
Step-by-step explanation:
Translate the situation into an algebraic equation:
- Ann has 5 brand new music CD’s, which is 3 less than twice the amount that Bob (x) has
- Find the value of x (the number of brand new CD's Bob has)
Part A:
∵ Bob has x brand new CD's
∵ Ann has 5 brand new music CD’s, which is 3 less than twice
the amount that Bob has
- That means multiply x by 2 and then subtract 3 from the product
and equate the answer by 5
∵ Twice x 2x
∵ 3 less than twice x = 2x - 3
∴ 2x - 3 = 5
The algebraic equation for the situation is 2x - 3 = 5
Part B:
Let us solve the equation to find the value of x
∵ 2x - 3 = 5
- Add 3 to both sides
∴ 2x = 8
- Divide both sides by 2
∴ x = 4
Bob has 4 brand new music CD's
Learn more:
You can learn more about the algebraic expressions in brainly.com/question/1600376
#LearnwithBrainly
Step-by-step explanation:
Given
h = 5 mi
r = 6 mi
Surface Area of Cylinder =
The numbers are 2, 2, 4, 5, 7
