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IceJOKER [234]
2 years ago
11

What is the simplified form of ether following expression ?

Mathematics
2 answers:
Nastasia [14]2 years ago
5 0
76828262638292827273737373 there
Sunny_sXe [5.5K]2 years ago
4 0

Answer:

C

Step-by-step explanation:

So we have the rational expression:

\frac{x^2-11x+30}{x^2-x-30}

We can factor the numerator and the denominator:

Numerator:

x^2-11x+30

Factor:

(x-5)(x-6)

Denominator:

x^2-x-30

Factor:

(x-6)(x+5)

Substitute:

\frac{x^2-11x+30}{x^2-x-30}\\=\frac{(x-6)(x-5)}{(x-6)(x+5)}

We can cancel out the (x-6). Thus:

=\frac{x-5}{x+5}

Our answer is C.

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3 years ago
Jana has a number cube numbered 1 to 6. She plans to roll the cube 78 times. Predict the number of times Jana will roll a 2.
Natali5045456 [20]
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7 0
3 years ago
The mean of a normally distributed dataset is 12, and the standard deviation is 2.
Schach [20]
So lets do it like this:
z = (X-Mean)/SD 
<span>z1 = (8-12)/2 = - 2 </span>
<span>z2 = (16-12)/2 = + 2 </span>
<span>According to the Empirical Rule 68-95-99.7 </span>
<span>Mean more or less 2SD covers 95% of the values </span>
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5 0
3 years ago
Evaluate : 9⁴xa⁷b⁴/ 3⁵xa⁴b⁴ ​
hjlf

Answer:

27a³

Step-by-step explanation:

9⁴xa⁷b⁴ / 3⁵xa⁴b⁴

(3²)⁴xa⁷b⁴ / 3⁵xa⁴b⁴

3⁸xa⁷b⁴ / 3⁵xa⁴b⁴

3³a³

27a³

7 0
3 years ago
The length of a rectangle is 5 inches longer than it is wide. If the area is 150 square inches, what are the dimensions of the r
ikadub [295]

Answer:

Width: 10 inches

Length: 15 inches

Step-by-step explanation:

Let the width be w.

Since the length is 5 inches longer than its width, the length = w +5.

Area of rectangle = length x width

w (w +5) = 150

w^2 + 5w = 150

w^2 + 5w -150 = 0

Using quadratic formula,

w = 10 or -15

Since the width cannot be negative,

the width is 10 inches.

Now just substitute w=10 into length = w +5.

length = 10 + 5

= 15 inches

5 0
3 years ago
Read 2 more answers
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