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3 years ago

8

Ella spends 2/3 hour practicing the piano each day. She also spends 1/2 hour jogging. What is the common denominator of the frac

tions?

1 answer:

Marianna [84]3 years ago

4 0

The common denominator is actually 6.

1/2 is the same as 3/6,
2/3 is the same as 4/6,
and therefore the least common denominator (LCM) is 6.

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Use the formula a2 – b2 = (a b)(a – b) to factor completely. what are the factors of 36x8 – 49? (9x4 – 1)(4x2 49) (36x4 – 7)(x2

zimovet [89]

The factors of 36x^8 – 49 are (6x^4-7)(6x^4+7).

We are given to factor the following polynomial completely:

36x^8 – 49.

We have to find the complete factor of the given polynomial.

Completely factor means to continuously factor terms until they are in simple terms, meaning you are no longer able to factor

<h3>What is the formula for (a^2-b^2)?</h3>

The formula for (a^2-b^2)= (a+b) (a-b).

Therefore applying the given formula we have,

$F=(6x^4)^2-7^2$

$F=(6x^4)^2-7^2\\F=((6x^4)-7)(6x^4)+7)$

Thus, the required factors are

$F=((6x^4)-7)(6x^4)+7)$

Therefore,option (C) is correct.

To learn more about factors visit:

brainly.com/question/25829061

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1 year ago

Jillian said √25 is irrational because it is a square root. Why is she wrong

o-na [289]

Square roots are rational and it equals 5 and 5 is rational

5 0

3 years ago

Read 2 more answers

Help please A B C OR D

Aleksandr [31]

The correct answer is c

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2 years ago

Read 2 more answers

rectangular stained glass window is 2 feet by 4 feet. A clear glass border is constructed around the stained glass window. The w

Mice21 [21]

S=2(4x+2x)+4x^2=4x^2+12x

4x^2+12x=7
4x^2+12x-7=0
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X1=(-12-16)/(2x4)=-3.5 impossible
X2=(-12+16)/(2x4)=0.5

A

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3 years ago

Ms. Lee wrote a test with 15 multiple choice short answer questions. The multiple choice questions x are worth 5 points and the

hram777 [196]

x + y = 15 and 5x + 10y = 100 are the system of equations that represent this situation

<em><u>Solution:</u></em>

Let "x" be the number of multiple choice questions

Let "y" be the number of short answer questions

Worth of 1 multiple choice questions = 5 points

Worth of 1 short answer question = 10 points

<em><u>Ms. Lee wrote a test with 15 multiple choice short answer questions</u></em>

Therefore,

number of multiple choice questions + number of short answer questions = 15

x + y = 15 -------- eqn 1

<em><u>The maximum number of points possible on the test is 100</u></em>

Therefore, we frame a equation as:

number of multiple choice questions x Worth of 1 multiple choice questions + number of short answer questions x Worth of 1 short answer question = 100

$x \times 5 + y \times 10=100$

5x + 10y = 100 ------- eqn 2

Thus eqn 1 and eqn 2 are the system of equations that represent this situation

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3 years ago