3 years ago

Function or Non-Function

Mathematics

1 answer:

Olenka [21]3 years ago

6 0

Answer:

2 is not a function.

3 is a function

Step-by-step explanation:

one x value should each have a line leading off it. there are 2 y values for one x values in question 2 so its not a function

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What is the possible arrangement for 22 students

lord [1]

$\bf \stackrel{Permutations}{_nP_r=\cfrac{n!}{(n-r)!}}~\hspace{6em}\stackrel{\textit{22 units arranged in groups of 22}}{_{22}P_{22}=\cfrac{22!}{(22-22)!}} \implies _{22}P_{22}=\cfrac{22!}{0!} \\\\\\ _{22}P_{22}=\cfrac{22!}{1}\implies _{22}P_{22}=22!\implies _{22}P_{22}=1124000727777607680000$

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3 years ago

The area of a certain desert desert one is five times the area of another desert desert 2 if the sum of their areas is 24, 000,

sweet-ann [11.9K]

4,000,000 and 20,000,000 miles²

let x be the area of one desert then 5x is the area of the other

sum = x + 5x = 24,000,000

6x = 24,000,000

divide both sides by 6

x = 4,000,000

one desert is 4,000,000 miles²

and the other is (5 × 4,000,000)= 20,000,000 miles²

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3 years ago

Read 2 more answers

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 18 miles per hou

blagie [28]

Formula: Distance = rate * time

570 = (R+(R-18))*3

570 = (2R - 18)*3

190 = 2R-16

208 = 2R

R = 104

Eastbound Train: 86mph

Westbound Train: 104mph

3 0

3 years ago

A salesperson works 40 hours per week at a job where she has two options for being paid. Option A is an hourly wage of $20. Opt

sdas [7]

Answer:

40$

Step-by-step explanation:

they have

20$

40hours

i=prt

multiplication of both

=40×20×5/100

=40$

the amount required at the week is 40$

7 0

3 years ago

The length of a rectangle is six times its width. If the area of the rectangle is 486 in 2 , find its perimeter.

seraphim [82]

w - width

6w - length

486 in² - area of the rectangle

(w)(6w) = 6w² - area of the rectangle

The equation:

6w² = 486 <em>divide both sides by 6</em>

w² = 81 → w = √81

w = 9 in

l = 6w → l = (6)(9) → l = 54 in

The perimeter: P = 2l + 2w

P = 2(54) + 2(9) = 108 + 18 = 126 in

<h3>Answer: The perimeter is 126in</h3>

5 0

4 years ago