If M = 5x² + 7x - 4 and N = -3x² - 4x + 5, then M - N equals...

Answers

Answer 1

Answer: M - N =

(5x^2+7x-4) - (-3x^2-4x+5)=

Distribute -1 through the second parentheses

5x^2+7x-4 +3x^2+4x-5=

combine like terms

8x^2 + 11x - 9

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What is the slope of the line that is perpendicular to the line that passes through points (4,3) and (6,2)?

Answers

the slope of the line is -1/2

It is not -1/2. It is 2 because youre looking for the perpendicular lines slope

Which of the following scenarios could be represented by the expression 6x+11y? A. The total weight of a box containing x 11-ounce packages of almonds and y 6-ounce packages of peanuts

B. The cost for x children and y adults to go to the movies if the adult tickets are $11 and the child tickets are $6

C. The number of kids in a school class if there are 6 girls and 11 boys

D. The total number of marbles in a jar if there are 11 green and 6 red

Answers

The scenarios that best represent the relationship between the variables would be B. It not only properly defines the variables but also, uses the correct pairs of numbers to go along with the variables of x and y.

Simplify the expression –3 2 . A. 9 B. 6 C. –6 D. –9

Answers

Answer:

see below

Step-by-step explanation:

(-3) ^2

(-3)*(-3)

A negative times a negative

If the problem is

- (3) ^2

- (3*3)

- 9

Topic 1 performance task. Part A: Error Analysis
Please help me.

Answers

Answer:

10^14

Step-by-step explanation:

10^11 * 10^3 = 10 ^ (11+3) = 10^14

Which of the following expressions would give the number of ways to choose a group of 7 from a group of 15?

Answers

The formula is ¹⁵C₇. Then the number of ways to choose a group of 7 from a group of 15 will be 6435.

What are permutation and combination?

A permutation is an act of putting things or elements in the right sequence. Combinations are a method of picking things or pieces from a collection of objects or sets when the sequence of the objects is irrelevant.

Then the number of ways to choose a group of 7 from a group of 15 will be given by the combination formula.

Then we have

Number of ways = ¹⁵C₇

Number of ways = 6435

More about the permutation and the combination link is given below.

brainly.com/question/11732255

#SPJ2

You didn't supply any expressions, but it'd be one of these (assuming it's unique combinations, rather than the duplicate permitting permutations):
(15!)/(7!(15-7)!)
or
(15!)/(7!8!)
or
(15•14•13•12•11•10•9)/(7!)
or
(15•14•13•12•11•10•9)/(7•6•5•4•3•2)
or
32432400/5040
or
6435

depending on what it has as possible answers.

Find the simple interest paid

$4500, 9%, 3.5 years

Answers

Step-by-step explanation:

Principle (P) =$4500

Rate(R) =9%

Time(T)=3.5yrs

We know,

SI=P×T×R/100

=4500×3.5×9/100

=$1417.5

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