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Tomtit [17]
3 years ago
6

Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, wha

t is the value of A? (2 points)
Mathematics
2 answers:
Mariulka [41]3 years ago
4 0
When you simplify the expression, you will get 3x^2-2x+5. The value of A will be 3.
aleksley [76]3 years ago
4 0
Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, what is the value of A? (2 points)


(5x^2 + 3x + 4) - (2x^2 + 5x- 1)=  \\  \\  \\  5x^2 + 3x + 4 - 2x^2 - 5x+ 1=  \\  \\  \\ 5x^2-2x^2+3x-5x+4+1=  \boxed{3x^2-2x+5} \\  \\ A= 3


I wish you much success in your studies!!!!
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The following data represent scores on a pop quiz in a business statistics section. Suppose the data on quiz scores will be grou
ruslelena [56]

Answer:

Taking data:

                         28 78 74 89 72

                         50 55 66 26 84

                         59 64 88 23 27

                         70 63 42 37 29

The answer is Width \ of\ class= 13

Step-by-step explanation:

As the data is not given in the question i'm guessing the data from the question i solved before

28 78 74 89 72

50 55 66 26 84

59 64 88 23 27

70 63 42 37 29

as taking the above data,

          Maximum\  value= 89

          Minimum\ vaue=23

          Number\ of\ classes\ scores\ are\ divided\ into =5\ classes

As we know for finding the width of class:

          Width\ of\ class = (max\ value - min\ value)/(\#\ of\  classes)

          Width = (89 - 23)/5 = 66/5

          Width = 13.2  ≈ 13

Note : By using the above given formula you can calculate the width of any data just by taking the maximum and minimum values of data and the number of classes the data is divided into.

8 0
3 years ago
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample
USPshnik [31]

Answer: Not unusual.

Step-by-step explanation:

We know that the  z-scores lower than -1.96 or higher than 1.96 are considered as unusual.

Given : Sample size : n= 65

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Standard deviation : \sigma=5.8

Formula for z-score : z=\dfrac{x-\mu}{\sigma}

At x= 213

z=\dfrac{213-212}{5.8}=0.172413793103\approx0.17

Since , -1.96< 0.17 <1.96

It means the probability of a sample mean being greater than 213 is not unusual.

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3 years ago
What is the first term in a geometric sequence if the common ratio is − 2 and the sum of the first six terms is −105?
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\bf -105=a_1\left( \cfrac{1-(-2)^6}{1-(-2)} \right)\implies -105=a_1\left( \cfrac{1-(64)}{1+2} \right)&#10;\\\\\\&#10;-105=a_1\left( \cfrac{-63}{3} \right)\implies -105=a_1(-21)&#10;\\\\\\&#10;\cfrac{-105}{-21}=a_1\implies 5=a_1
7 0
3 years ago
Which equation illustrates the multiplicative inverse property?
Schach [20]
C. 3 times 1/3 = 1 Its inverse property so that’s why it the answer
8 0
3 years ago
Please help ill give you brainliest
mel-nik [20]

Answer:

Step-by-step explanation:

Th correct one is the third box

plz mark me brainliest

3 0
3 years ago
Read 2 more answers
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