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3 years ago

What is 2x² - 3y/2y²-3y where x is -4 and y is - 6

Mathematics

1 answer:

marysya [2.9K]3 years ago

3 0

The answer is 34, just plug the numbers in

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Evaluate the expression <br><br> x=-4.9 and y=-1.3 <br><br> -5x+7y

Flura [38]

Answer:

15.4

Step-by-step explanation:

-5×(-4.9) +7×(-1.3)

=24.5+(-9.1)

=24.5-9.1

==15.4

8 0

2 years ago

One car travel 56 miles per hour and another travels 31 miles per hour. If they start from the same place at the same time and t

Vitek1552 [10]

After 3 hours, the faster car will be 75 miles ahead of the slower car.

Step-by-step explanation:

Given,

Speed of first car = 56 miles per hour

Speed of second car = 31 miles per hour

Let,

x be the number of hours.

Distance covered by first car = Speed * time = 56x

Distance covered by second car = 31x

According to given statement;

Difference between distance covered by both cars = 75 miles

Distance of faster car - Distance of slower car = 75 miles

$56x-31x=75\\25x=75$

Dividing both sides by 25

$\frac{25x}{25}=\frac{75}{25}\\x=3$

After 3 hours, the faster car will be 75 miles ahead of the slower car.

Keywords: subtraction, division

Learn more about subtraction at:

#LearnwithBrainly

4 0

3 years ago

In 6-8, each table represents a linear relationship. Use the slope formula to find the slope or rate of change shown in each tab

dimaraw [331]

The slopes of the relationships are given as follows:

6. 5.

7. 1.

<h3>What is the complete question?</h3>

The problem is incomplete, as the tables are not readable, but researching it on a search engine, we find that:

For item 6, we have points (2,8) and (6,28).

For item 7, we have points (-6,5) and (4,10).

<h3>How to find the slope of a line given two points?</h3>

Given two points in the format (x,y), the slope of the line is given by change in y divided by change in x.

Hence, the slopes for each problem are given as follows:

6. m = (28 - 8)/(6 - 2) = 20/4 = 5.

7. m = (10 - 5)/(4 - (-6)) = 10/10 = 1.

More can be learned about the slope of a line at brainly.com/question/24808124

#SPJ1

5 0

1 year ago

Read 2 more answers

Solve the system of equations by graphing. -x+y = -2 y = -1

Aleks04 [339]

Answer:

the solution is (9, -1).

Step-by-step explanation:

graph the two equations on a graphing calculator (i use a website called desmos) and the point of intersection is the solution.

i hope this helps! have a great day <3

4 0

2 years ago

german tiene 13 billetes en su bolsillo , algunos son de $2000 y otros de $5000 si en total German tiene $40.000 ¿Cuantos billet

Rufina [12.5K]

Answer:

hay 10 billetes de 2000

hay 4 billetes de 5000

Step-by-step explanation:

Planteamos las siguientes ecuaciones...:

x= billetes de 2000

y= billetes de 5000

ecuaciones :

1) x+y = 14

2) 2000x + 5000y =40000

despejamos primera ecuacion y remplazamos en segunda :

1) x= 14-y

2) 2000(14-y) + 5000y = 40000

28000- 2000y+5000y = 40000

3000y= 40000 - 28000

y= 4

reemplazamos este valor en primera ecuacion:

x+y = 14

x+ 4= 14

x= 10

ahora reemplazamo valor de X y valor de Y

2000(10) + 5000(4) =40000

40000 =40000

hay 10 billetes de 2000

hay 4 billetes de 5000

Espero que esto te ayude

8 0

3 years ago

What is 2x² - 3y/2y²-3y where x is -4 and y is - 6​

What is 2x² - 3y/2y²-3y where x is -4 and y is - 6