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3 years ago

What is a common denominator for ⅜ and ⅔

Mathematics

1 answer:

il63 [147K]3 years ago

8 0

Answer:

24 is the simplest common denominator of 3 and 8

Step-by-step explanation:

24 is the first time they can become equal without becoming a decimal

hope this helps <3

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Kevin and Randy Muise have a jar containing 70 coins, all of which are either quarters or nickels. The total value of the coins

Nikitich [7]

Answer:

50 nickels, 20 quarters.

Step-by-step explanation:

System of equations (q = # of quarters, n = # of nickels):

q + n = 70, 0.25q + 0.05n = 7.50

the first equation can be changed to q = 70 - n, so we are able to substitute q with 70 - n.

So, it will look like 0.25*70 - 0.25n + 0.05n = 7.50. This can be simplified to 0.2n = 10, which means that n = 50.

Knowing that we can solve q + 50 = 70, which means that q = 20.

6 0

3 years ago

Kylie explained that (negative 4 x 9) squared will result in a difference of squares because (negative 4 x 9) squared = (negativ

JulijaS [17]

A perfect square trinomial is the result in algebraic form which is obtained by solving the squared binomial expression. Kylie did not understand that this is a perfect square trinomial and she did not determine the product correctly. Thus the option C is the correct option.

Given information-

The expression for the given problem is,

$(-4x+9)^2$

<h3>Perfect square trinomial</h3>

A perfect square trinomial is the result in algebraic form which is obtained by solving the squared binomial expression.

The perfect square trinomial can be given as,

$ax^2+bx+c$

The given expression can be solved as,

$(-4x+9)^2=(-4x+9)\times(-4x+9)\\(-4x+9)^2=-4x(-4x+9)+9(-4x+9)\\(-4x+9)^2=16x^2-36x-36x+81\\(-4x+9)^2=16x^2-72x+81$

Hence Kylie did not understand that this is a perfect square trinomial and she did not determine the product correctly. Thus the option C is the correct option.

Learn more about the perfect square trinomial here;

brainly.com/question/88561

3 0

2 years ago

(20 points)

vladimir1956 [14]

Answer:

Step-by-step explanation:

Slope is the same(x) therefore they are parallel

3 0

4 years ago

Isaac is 3 years older than Rachael. In 4 years the sum of their ages will be 75. How old is Isaac now?

MatroZZZ [7]

Answer:

36 years old

Step-by-step explanation:

let x = age of Rachael

2x+3 = current ages combined

[(2x+3)+4]+4 = 75

2x+11 = 75

2x = 75-11

2x = 64

x = 32

Rachel is 32 years old. Isaac is 3 years older, which is 35 years old.

Hope this helped! If you need any help, tell me in the comments.

6 0

3 years ago

Read 2 more answers

Let x represents the amount of a transaction and let f(x) represents the amount Isabel is charged for the transaction write a fu

Svetradugi [14.3K]

Answer:

$f(x) = \frac{Px}{100}$

Step-by-step explanation:

Let P% of the transaction amount is charged in the account.

So, if the transaction amount is x, then the charge for that transaction will be

$\frac{ Px }{ 100 }$ .

Therefore, if f(x) represents the amount Isabel is charged for the transaction then we can write $f(x) = \frac{ Px }{ 100 }$ , where P% is the rate of charge. ( Answer )

4 0

3 years ago

What is a common denominator for ⅜ and ⅔​

What is a common denominator for ⅜ and ⅔