1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tankabanditka [31]
3 years ago
14

Rationalize the denominator in each expression. That is, rewrite the expression so that there is a rational expression in the de

nominator a)((x-9)/√(x-9))b)((x-9)/(√x+3))
Mathematics
1 answer:
ad-work [718]3 years ago
7 0

Answer:

explanations: we multiply with a rational surd

(x-9)*√(x+9)/(√(x-9)*√(x+9)

=(x-9)√(x+9)/

x {}^{2}   - 9

B.( x-9)/√x+3 =( x-9)*(√x-3)/(√x+3)*(√x-3)

= (x-9)*(√x-3)/x-9

=√x-3

You might be interested in
How many inches are in feet
GaryK [48]
Answer: 12 inches

Explanation:

12 inches = 1 feet
3 0
3 years ago
Read 2 more answers
Peyton has collected 120 aluminum cans for recycling. If 20 cans will fit in each blue plastic bag, how many bags will she need
gogolik [260]

Hi Renee!

--------------------------------------------

We Know:

120 aluminum cans.

20 cans fit in each blue bag.

--------------------------------------------

Solution:

120 / 20 = 6

--------------------------------------------

Answer:

She will need 6 bags to carry all the aluminum cans.

--------------------------------------------

Hope This Helps :)

6 0
2 years ago
The stock price for International Business Machines (IBM) historically has followed an approximately normal distribution (when a
olganol [36]

Answer:

0.494 is the probability that on a selected day the stock price is between $186.26 and $192.47.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $188.876

Standard Deviation, σ = $4.6412

We are given that the distribution of stock price is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(stock price is between $186.26 and $192.47)

P(186.26 \leq x \leq 192.47) = P(\displaystyle\frac{186.26 - 188.876}{4.6412} \leq z \leq \displaystyle\frac{192.47-188.876}{4.6412}) = P(-0.5636 \leq z \leq 0.7743)\\\\= P(z \leq 0.7743) - P(z < -0.5636)\\= 0.781 - 0.287 = 0.494 = 49.4\%

P(186.26 \leq x \leq 192.47) = 49.4\%

0.494 is the probability that on a selected day the stock price is between $186.26 and $192.47.

5 0
3 years ago
A mechanic charged $220.28 to repair a car. The price included charges for 3 hours of labor and $126.53 for parts. How much does
Assoli18 [71]

Answer:

$31.25

Step-by-step explanation:

Let's set up an equation.

$220. 28 - total

$126.53 - cost for parts

3 - # of hours

? - price per hour

3h + $126.53 = $220.28

Subtract $126.53 from both sides.

3h = $93.75

Divide by 3.

h = $31.25

The mechanic charges $31.25 per hour for labor.

Hope that helps.

6 0
2 years ago
-2/15 DIVIDED BY -2/5 LOWEST TERMS
Sidana [21]
I'm fairly certain the answer is 1/3.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the product of −2 2/5 and −3 5/6 ?
    7·2 answers
  • What are two double facts for 6+7
    5·1 answer
  • What is 7/8 minus 1/4?
    12·1 answer
  • Melissa believes the following graph shows direct variation. What is Melissa’s error?
    15·2 answers
  • If I get a 90 on a quiz and I have a 88.4 in the class will it bring the grade up
    13·1 answer
  • Buses arrive at a specified stop at 15-minute intervals starting at 7 A.M. That is, they arrive at 7, 7: 15, 7: 30, 7: 45, and s
    6·1 answer
  • Simplify -5^5 ÷ -5^-6
    7·1 answer
  • So far you have completed 80% of the problems for your math exam. Your exam
    13·2 answers
  • Your friend finds the area of a circle with a diameter of 9 inches. Is your friend correct? Explain
    8·1 answer
  • A search committee is formed to find a new software engineer.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!