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otez555 [7]
3 years ago
7

What is the difference? mc005-1.jpg

Mathematics
2 answers:
IRINA_888 [86]3 years ago
8 0
Im pretty sure its B
sp2606 [1]3 years ago
6 0
<h2>Answer</h2>

\frac{x^2+4x-1}{x(x+2)}

<h2>Explanation </h2>

Remember that to subtract fractions we need to find the common denominator first.

To find it, the first thing we need to do is factor the denominator of the second term:

\frac{x+5}{x+2} -\frac{x+1}{x^2+2x}

\frac{x+5}{x+2} -\frac{x+1}{x(x+2}

Since x+2 is a common factor in both denominators, the common denominator of both fractions is x(x+2)

Now, we can express both fraction with the common denominator and simplify:

\frac{x+5}{x+2} -\frac{x+1}{x(x+2}

\frac{x(x+5)-(x+1)}{x(x+2)}

\frac{x^2+5x-x-1}{x(x+2)}

\frac{x^2+4x-1}{x(x+2)}

We can conclude that the correct answer is the first choice.

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Which of the following statements about JK and JL is true?
mash [69]

Answer:

B. JK is longer than JL

Step-by-step explanation:

JK is 6, JL is 5. Therefore, JK is longer than JL.

8 0
2 years ago
A. - 3x - 2y = 4
weeeeeb [17]

Answer:it’s .a

Step-by-step explanation:

7 0
2 years ago
1-69.
timofeeve [1]

The question above was not written properly

Complete Question

Lacey and Haley are rewriting expressions in an equivalent, simpler form.

a. Haley simplified x³⋅ x² and got

x⁵

Lacey simplified x³ + x² and got the same result! However, their teacher told them that only one simplification is correct. Who simplified correctly and how do you know?

b. Haley simplifies 3⁵⋅ 4⁵ and gets the result 12^10, but Lacey is not sure.

Is Haley correct? Be sure to justify your answer.

Answer:

a) Haley is correct, Lacey simplified wrongly.

b) Haley is incorrect

Step-by-step explanation:

a. Haley simplified x³⋅ x² and got

x⁵

Lacey simplified x³ + x² and got the same result! However, their teacher told them that only one simplification is correct. Who simplified correctly and how do you know?

For Question a, when it comes to simplifying algebraic expression that has to do with powers, there are certain rules that should be followed.

For example

x^a × x^b = x^(a + b)

For Haley, she simplified x³⋅ x² and got

x⁵

She is correct because this follows the product rule of powers or exponents above

= x³⋅ x² = x³+² = x⁵

For Lacey she is wrong because:

x³ + x² ≠ x⁵

x³ + x² when simplified as quadratic equation = x²(x + 1)

b. Haley simplifies 3⁵⋅ 4⁵ and gets the result 12^10, but Lacey is not sure.

Is Haley correct? Be sure to justify your answer.

For question b, when we have two distinct or different numbers with the same power(exponents) the rule states that:

x^a × y^a = (x × y)^a = (xy)^a

Haley is simplified wrongly. She did not apply the rule above

Haley simplified 3⁵⋅ 4⁵ = (3 × 4) ⁵+⁵

= 12^10, this is wrong.

The correct answer according to the rule =

3⁵⋅ 4⁵ = (3 × 4) ⁵ = 12⁵

Therefore,

3⁵⋅ 4⁵ ≠ 12^10

3⁵⋅ 4⁵ = 12⁵

Haley is wrong.

3 0
3 years ago
Turn 0.68 into a fraction in simplest form
sattari [20]
Since .68 is 68/100, you can simplify to 17/25. 
7 0
3 years ago
Read 2 more answers
What related number sentence shows the commutative property addition 3+9=12
Dafna1 [17]
The related number sentence that shows the commutative property addition for the equation 3+ 9 + 12 is 9 + 3 = 12

Please take note, the commutative property of addition is
a + b = c
b + a = c
a + b = b + a

Commutative originates from the word move around or commute, therefore, commutative property refers to the act of moving stuff around. In addition, the rule is a + b = b + a; wherein from the example above, means 9 + 3 = 3 + 9. They want to say that the computation uses the Commutative Property, if at any time, a computation depends on moving stuff around
6 0
3 years ago
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