MATHEMATICS MIDDLE SCHOOL

Simplify (18 + t) (-3) + 9

Answers

Answer 1

Answer: The answer is (18 + t) * (-3) + 9 is t= -15.

Answer 2

Answer: actually it is -3t-45

Answer with explanation:

No, Lea is incorrect.

" The composition of two functions may be different if they are taken in different orders "

For example:

If,

$f(x)=x+2$

and

$g(x)=x^2$

Then,

$(fog)(x)=f(g(x))\n\n(fog)(x)=f(x^2)\n\n(fog)(x)=x^2+2$

Also,

$(gof)(x)=g(f(x))\n\n(gof)(x)=g(x+2)\n\n(gof)(x)=(x+2)^2\n\n(gof)(x)=x^2+4x+4$

Now, we know that (gof)(x) and (fog)(x) will not be equal for all the values of x.

They will be equal only for x= -1/2

( Since,

$x^2+2=x^2+4x+4\n\n2=4x+4\n\n4x=2-4\n\n4x=-2\n\nx=(-2)/(4)\n\nx=(-1)/(2)$

No, because you substitute differently in both so they are not equal.

Help please because I need help and its confusing

Answers

First sort the number form least to greatest

24,26,27,28,30,30,33,36

To find the mean, we divide to sum of all numbers in the data set by the number of numbers given,'8'.

(24+26+27+28+30+30+33+36)/8=234/8=29.25

Mean=29.25

To find the inter quartile range, we must solve for the lower and upper quartile mean.

Lower Quartile=(24+26+27+28)/4=26.25
Upper Quartile=(30+30+33+36)/4=32.25

32.25=26.25=6

Interquartile range=6

The median is the middle number in the data set, or the sum of the two middle numbers if there isn't a sole middle number

24,26,27,28,30,30,33,36

Median=(28+30)/2=29

Median=29

1st quartile we already solved for...
Lower/1st Quartile=(24+26+27+28)/4=26.25

3rd quartile we already solved for....
Upper/3rd Quartile=(30+30+33+36)/4=32.25

The mean would be most effected by an outlier of 52, the median would only go from 29 to 30.

How many irrational numbers are there between 1 and 6 ?F. 1
G. 3
H. 4
J. 10
K. Infinitely many

Answers

Irrational numbers are numbers that cannot be expressed or represented as a ratio of two integers. Thus, the answer is K. Infinite many because there are infinite numbers that can be found between numbers 1 to 6; numbers that cannot be expressed as repeating decimals or so.

Think that between numbers 1 to 2 , there are many irrational numbers between same in numbers 2 to 3 , 3 to 4, 4 to 5 and 5 to 6.
Thus, There are infinite numbers of irrational number between numbers 1 to 6

K. Infinitely many
.................

PLEASE HELP!First determine the degree of each polynomial expression below. Explain how you determined this on each expression.Then organize the expressions from least to greatest based on their degree
I. 6x^2
II. 18x^3+5ab-6y
III.8a-5
IV. 4x^3y+3x^2-xy-4

Answers

Degree of polynomials:

$6x^2 = 2\n\n18x^3+5ab-6y = 3\n\n4x^3y +3x^2-xy-4 = 4\n$

Least to greatest based on degree:

$6x^2$

$18x^3+5ab-6y$

$4x^3y +3x^2-xy-4$

Solution:

The degree of the polynomial is the highest degree of any of the terms

Know that the degree of a constant is zero

Option I

$6x^2$

Here the highest degree is 2 ( x power 2)

In this case, degree of polynomial is 2

Option II

$18x^3+5ab-6y$

To find the degree of the polynomial, add up the exponents of each term and select the highest sum.

$Degree\ of\ 18x^3 = 3$

$Degree\ of\ 5ab = 5a^1b^1 = 1+1 = 2$

$Degree\ of\ 6y = 6y^1 = 1$

Thus the highest degree is 3

Option III

$8a^(-5)$

This is not a polynomial

A polynomial does not contain variables raised to negative

Option IV

$4x^3y +3x^2-xy-4$

To find the degree of the polynomial, add up the exponents of each term and select the highest sum.

$Degree\ of\ 4x^3y = 4x^3y^1=3+1 = 4\n\nDegree\ of\ 3x^2 = 2\n\nDegree\ of\ xy = x^1y^1 = 1+1 = 2\n\nDegree\ of\ 4 = 0$

Thus highest degree is 4

Then organize the expressions from least to greatest based on their degree

Least to greatest based on degree:

$6x^2$

$18x^3+5ab-6y$

$4x^3y +3x^2-xy-4$

Evaluate -6 - (-3)

Answers

Answer: -3

Step-by-step explanation: In this problem we are asked to subtract -6 - (-3). It's important to understand that when we have minus a negative, we can change it to plus a positive.

Now we have the following.

-6 + 3

Starting at 0 on our number line, -6 moves us 6 units to the left. Then from there, positive 3 moves us 3 units back to the right and we end up at -3.

Therefore, -6 - (-3) = -3

Other Questions

Simplify a raised to the negative third power over quantity 2 times b raised to the fourth power end quantity all cubed.8b12a9 quantity 8 times b raised to the twelfth power end quantity over a raised to the ninth power 1 over quantity 6 times a raised to the ninth power times b raised to the twelfth power end quantity 1 over quantity 8 times a raised to the ninth power times b raised to the twelfth power end quantity

What will be the ratio of circles to triangles in a drawing showing 4 circles and 7 triangles?

I need help someone pls help me figure this out

What is straight, is part of a line, and has 2 end points?

Simplify (18 + t) (-3) + 9

Answers

Related Questions

Answers

Answers

Answer with explanation:

Answers

Answers

Answers

Answers