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2 years ago

Match the following items by evaluating the expression for x = -6.

Mathematics

1 answer:

Kryger [21]2 years ago

5 0

Step-by-step explanation:

Put the value of x = -6 to all expressions:

$x^{-2}=(-6)^{-2}=\dfrac{1}{(-6)^2}=\dfrac{1}{6}\qquad\text{used}\ a^{-n}=\dfrac{1}{a^n}\\=====================\\x^{-1}=(-6)^{-1}=\dfrac{1}{(-6)^1}=-\dfrac{1}{6}\\=====================\\x^0=(-6)^0=1\qquad a^0=1\ \text{for all real numbers except 0}\\=====================\\x^1=(-6)^1=-6\qquad a^1=a\ \text{for all real numbers}\\=====================\\x^2=(-6)^2=36$

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HELP!! Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

Rashid [163]

Answer:

85%

Step-by-step explanation:

You are given the function $S(n)=20\cdot b^n.$

If n is the number of hours, then initially n=0 and

$S(0)=20\cdot b^0=20\cdot 1=20.$

If S(n) is the function of exponential growth, then it can be represented as

$S(n)=I\cdot (1+r)^n,$

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If b = 1.85, we can represent it as b = 1 + 0.85. Thus, the hourly percent growth rate of the bacteria would be 0.85=85%.

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2 years ago

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The data on the scores obtained by students in five different entrance exams have been collected from 50 colleges and they are p

Westkost [7]

Answer:

Step-by-step explanation:

1. Add data into excel and name both the columns

2. Select top cell and press Ctrl+T to convert data into table

3. Click on any cell on the table and click pivot table in the 'Insert' tab. You will get a pivot table frame.

a. Which exam did most students attempt?

i. Move 'Test name' field to row in the pivot table. Also move test scores field to the value table.

ii. This by default will give you the sum of scores. Click on the field under 'value' table and change it from 'sum of values' to 'count of values'

The answer is GMAT taken by 13 students

b. Which exam has the highest average score?

i. From the pivot table created in part a, change the field setting to 'Average' instead of count.

The answer is GMAT with 499.07 average

c. Use the pivot table to determine the exam attempted by the student with highest score

i. In the pivot created above, change field setting to 'Max'

The answer is MCAT with 589

What is the exam attempted by the student with lowest score.

i. Change the field setting in the pivot to 'Min'

The answer is GRE with 267

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2 years ago

The owner of a health club decides to reduce the $35 membership fee by $5. What is the approximate percent decrease in the fee?

AlexFokin [52]

Answer:

The answer is c

Step-by-step explanation:

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1 year ago

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I talk to an average of 8 customers per hour during an 8 hour shift and need to increase the amount of customers i help by 20%,

lbvjy [14]

Answer:

The number of customer needed to achieve is 34

Step-by-step explanation:

Given as :

The number of customer per hour = 8

The time taken = 8 hours

The rate of increase = 20 %

Let The increase in number of customer after 20 % increment = x

So , The number of customer after n hours = initial number × $(1+\dfrac{\textrm rate}{100})^{n}$

or, The number of customer after 8 hours = 8 × $(1+\dfrac{\textrm 20}{100})^{8}$

or, The number of customer after 8 hours = 8 × 4.2998

∴The number of customer after 8 hours = 34.39 ≈ 34

Hence The number of customer needed to achieve is 34 answer

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2 years ago

Brahmagupta solved a quadratic equation of the form ax2 + bx = c using the formula x =, which involved only one solution. Using

weeeeeb [17]

X2+7x-8=0
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sum= 7
{-1, 8}
x2-1x+8x-8=0
x(x-1)+8(x-1)=0
x+8=0 or X-1=0
x=-8

4 0

1 year ago

Read 2 more answers