Which is NOT a common denominator for 2/3 and 1/2 ?A. 18
B. 12
C. 6
D. 3

Answers

Answer 1

Answer:

The number 3 can not be the common denominator for 2/3 and 1/2. The correct option is D.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Any number of equal parts is represented by a fraction, which also represents a portion of a whole. The number of components of a specific size is expressed as a fraction.

The fractions will have all the numbers 18, 12, and 6 as the common denominator but can not have 3 as a common denominator.

Therefore, the number 3 can not be the common denominator for 2/3 and 1/2. The correct option is D.

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Answer 2

Answer:

Answer:

D: 3

Step-by-step explanation:

2 is not a factor of three

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A deposit can be filled by two keys. One poured 140 liters in 8 minutes and the other 130 liters in 7 minutes. How long it will take to fill the tank, drain being empty and closed?, if the two keys are open at the same time, knowing that its capacity is 400 liters?

Answers

its a matter of calculating the two speeds of filling and then add them together.
speed1 = 140 liters / 8 minutes = 17.5 liters per minute
speed2 = 130 liters / 7 minutes = 18.57 liters per minute
So we'll open both keys with speed1 and speed2, x amount of minutes, and fill 400 liters, if we write an equation of these statement that is:
17.5x + 18.57x = 400
solve for x!
36.07x = 400
x = 11.09
therefore it will take 11.09 minutes to fill the 400 liters tank with both keys open.

The rectangle below has an area of x ^ 2 - 16 square meters and a width of x + 4meters . What expression represents the length of the rectangle?

Answers

Answer:

length=x-4

Step-by-step explanation:

"A solid machine part is to be manufactured as shown in the figure. The part is made by cutting a small cone off the top of a larger cone. The small cone has a base radius of 3 inches and a height of 5 inches. The larger cone has a base radius of 5 inches and had a height of 12 inches prior to being cut. What is the volume of the resulting part illustrated in the figure?"-------------------------
I keep doing the math for it and get 359 cubed inches (rounded to the closest whole number) when including the pi, and 114*pi cubed inches when I exclude it. The answer choices are 60*pi cubed inches, 65*pi cubed inches, 85*pi cubed inches, and 90*pi cubed inches. Can someone go through the math of this?

Answers

Large cone:

V = 1/3 x pi x r^2 x h

= 1/3 x 3.14 x 9^2 x 15

= 1272.3 cubic inches

Smaller cone:

V = 1/3 x pi x r^2 x h

= 1/3 x 3.14 x 3^2 x 5

= 47.1 cubic inches

1272.3 - 47.1 = 1225.2 cubic inches

1272/3.14 ≈ 390

The answer is 390 × pi.

A mutual fund’s net asset value increases by $5 per share. An investor who owns 450 shares of this fund sells them all for a profit of $2,205. What can you conclude about the fund?

Answers

The total amount of profit that he was able to gain out of his 450 shares is 2,205. In the problem, it states that for ever share he earns $5 dollars each.in order to derive the total amount of profit he got from his shares, we multiply 450 shares and $5.
so, 450*5 is equals to $2,205.

Answer:

Its B

Step-by-step explanation:

The fund had a $0.10 per share commission when purchased. ED

4) Eya is 5 years younger than 3 times Bill's age. If Eya is 28 years old, howold is Bill? Use an equation to solve. For the answer, only type Bill's age
Your answer

Answers

Bill would be 11 years old.

Answer:

bill would be 11 years old.

Four more than the product of 23 and Gregs height. Use the variable g to represent Gregs height

Answers

four more than (4+) the product of 23 and gregs height (23 times greg's height)
greg's height will be represented by g
4+23g

23g means 23 times g same as 23(g)

Final answer:

The expression that represents four more than the product of 23 and Greg's height is 23g + 4. Simplifying the expression gives us 5.385g.

Explanation:

The question is asking for an expression that represents four more than the product of 23 and Greg's height. We can represent Greg's height with the variable g. So the expression would be 23g + 4. If we simplify the expression, we get 5.385g.