MATHEMATICS COLLEGE

Please help on that excercise

Answers

Answer 1

Answer:

Step-by-step explanation:

16. d-4 = -7

or, d = -7+4

or, d = -3

therefore, d = -3.

17. c-34 = 20

or, c = 20+34

or, c = 54

therefore, c = 54

18. a-4 = -18

or, a = -18 + 4

or, a = -14

therefore, a = -14

19. r-3 = 8

or, r = 8+3

or, r = 11

therefore, r = 11

20. z-100 = 100

or, z = 100+100

or, z = 200

therefore, z = 100

21. 5 = d - 1

or, 5+1 = d

or, 6 = d

or, d = 6

therefore, d = 6

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Graph the function f(x) = x^3+2x^2-3

. Solve for x.
10xy=W

Answers

Answer:

x=W/10y

Step-by-step explanation:

A photocopier can print 12 copies in 18 seconds. At this rate, how many copies can it print in 42 seconds?

Answers

28 copies !!!!!!! In 42 second

Answer:

It should be 28 copies

Step-by-step explanation:

If you divide 42 by 18 it gives you 2.33333333

If you multiply 12 by 2.33333333 it gives you 28

On a number line, point A is at coordinate 1. Point B is at coordinate-5. Find thecoordinate that is the midpoint from A to B.

Answers

Answer:

-2

Step-by-step explanation:

Midpoint is the half of the sum of endpoints

Point A = 1

Point B = - 5

Midpoint :

(1 + (-5))/2 = -4/2 = -2

Over the last 100 business days, harry had 20 customers on 30 of those days, 25 customers on 20 days, 35 customers on 30 days, 40 customers on 10 days, and 45 customers on 10 days. what is the variance of the number of harry's customers?

Answers

Variance = sum of all x terms (x1 - mean of x)^2 / n
the mean is the average: 20 + 25 + 35 + 40 + 45 /5 = 165/5 = 33
v = (20-33)^2 / 5 + (25-33)^2 / 5 + (35-33)^2 / 5 + (40-33)^2 / 5 + (45-33)^2 / 5
v = 33.8 + 12.8 + 0.8 + 9.8 + 28.8
v = 86

Max has been offered positions by two car companies. The first company pays a salary of $7,500 pluscommission of $1000 for each car sold. The second company pays a salary of $17,500 plus a commission of
$500 per car sold. How many cars would need to be sold to make the total pay the same?

Answers

The number of cars would need to be sold to make the total pay the same is 20.

Given that, the first company pays a salary of $7,500 plus commission of $1000 for each car sold.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Let the number of cars be x.

The first company pays = 7500+1000x

The second company pays = 17500+500x

So, 7500+1000x=17500+500x

⇒ 1000x-500x=17500-7500

⇒ 500x=10000

⇒ x=10000/500

⇒ x=20

Therefore, the number of cars would need to be sold to make the total pay the same is 20.

To learn more about an equation visit:

brainly.com/question/14686792.

#SPJ2

Answer:

11 for the first company and 2 for the second company

What is the greatest common factor of 18, 36 , and 54

Answers

Answer:

Step-by-step explanation:

Answer:
GCF = 18
Explanation:

The factors of 18 are: 1, 2, 3, 6, 9, 18

The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36

The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54

Then the greatest common factor is 18.

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