MATHEMATICS HIGH SCHOOL

Simplify. (-6x^2 + 2y - 1) + (2x^2-5y + 3) A) -4x^2 + 3y -2 B) -4x^2 - 3y - 2 C) -4x^2 + 3y +2 D) -4x^2 -3y +2

Answers

Answer 1

Answer:

Combine like terms

-6x^2+2y + -1 +2x^2 + -5y +3

( -6x^2+2x^2)+(2y-5y)+(-1+3)

= -4x^2+3y+2

Answer : C

I hope that's help !

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Simplify the expression below.
√169

Answers

Answer:

The simplified form of the given expression is 13.

Step-by-step explanation:

The given expression is

$√(169)$

It can be written as

$√(13* 13)$

$√(13^2)$

$(13^2)^{(1)/(2)}$ $[\because √(x)=x^{(1)/(2)}]$

$13^{(2)/(2)}$ $[\because (x^m)^n=x^(mn)]$

$13^(1)$

$13$

Therefore the simplified form of the given expression is 13.

The square root of 169 is 13 because 13X13 equals to 169.

Form a union for the following sets. K = {2, 3, 5, 8}
L = {3, 5, 7}
a. { }
b. {3, 5}
c. {2, 3, 5, 7, 8}
d. {2, 7, 8}

Answers

Union of the represented sets should include all the sets without repetition
Here is an example for substituton $A= {1,2,3} B={3,4,5} A union B = {1,2,3,4,5}$ . So, logically, the answer is c. {2, 3, 5, 7, 8}

AuBuCuDuKuL={2,3,5,7,8}

Which angles are alternate interior angles?

Answers

Answer:

THE ANSWER IS

<UTW and <XWY

THANKU

An object travels 8 miles in 20 min at a constant speed. What is the objects speed in miles per hour? A. 32
B. 28
C. 24
D. 20

Answers

20x3 = 60 mins/ one hour
8x3 =24
24mph

Record 3 2/25 as a decimal. Please help!!!!!

Answers

The answer is 3.08

3+2/25
= 3.08
= 308%

Answer:

1.28 is the decimal form

Step-by-step explanation:

and 128/100 or 128% is the percentage for 32/25.

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Which measure is always the 50th percentile?
mean
median
upper quartile

Answers

The measure that always represents the 50th percentile is the median. It is the middle value when data is sorted and is robust to outliers, unlike the mean.

The measure that always represents the 50th percentile in a dataset is the median. The median is the middle value in a dataset when it is ordered from smallest to largest. It divides the data into two equal halves, with half of the values falling below it and half above it.

Unlike the mean, which is the average of all values and can be influenced by extreme outliers, the median is robust to outliers because it solely depends on the middle value. This makes it a better measure of central tendency when dealing with skewed or non-normally distributed data.

On the other hand, the upper quartile, also known as the third quartile, represents the 75th percentile. It divides the data into the upper 25% and lower 75%. The mean is the average of all values in the dataset and does not necessarily correspond to any specific percentile.

In summary, the median always corresponds to the 50th percentile and is a valuable measure for understanding the central tendency of a dataset, especially when dealing with skewed data or outliers, while the mean and upper quartile represent different points in the data distribution.

For more such question on median

brainly.com/question/26177250

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the 50th percentile of a data set is always equal to the median
hope this helps.

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