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2 years ago

The graph shown here is the graph of which of the following rational

Mathematics

1 answer:

IgorLugansk [536]2 years ago

7 0

Answer:

I think it's option B ...

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What is the solution to the system of equations?

Over [174]

ANSWER

C) (6,-8)

EXPLANATION

The equations are:

$y = \frac{1}{3}x - 10$

and

$2x+y=4$

We substitute the first equation into the second equation to get:

$2x + \frac{1}{3}x - 10 = 4$

We multiply through by 3 to get:

$6x + x - 30= 12$

Group similar terms,

$6x + x = 30 + 12$

$7x = 42$

Divide both sides by 7 to get,

$x = \frac{42}{7} = 6$

Put this value of x into the first equation to get;

$y = \frac{1}{3} (6) - 10$

$y = 2 - 10 = - 8$

3 0

2 years ago

Suppose I had a tower that stood two Earth radii tall from the surface of the Earth to the top I start on the ground with a scal

weqwewe [10]

Answer: The rock would still weigh 90lbs

Step-by-step explanation:

No, weight has being proven to reduce by the further you move from the center of the Earth. But since even the tallest buildings in the world or tallest mountains are a tiny fraction of the Earth’s radius, the difference in weight won’t be something that can be measured as it’s a tiny fraction. So the mass of the rock doesn’t change what changes is the gravitational force ( g ). So the rock would still end up weighing 90lbs even at the top of the tower because it is still within the earths atmosphere.

4 0

2 years ago

Why does -4i*i=4? what happens to the i when you multiply it

Alchen [17]

$▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪$

As we know that :

${i}^{2} = i \times i = - 1$

so, over here

$- 4i \times i$

$- 4 {i}^{2}$

plugging the value of i² as -1

$- 4 (- 1)$

8 0

2 years ago

A train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hour

morpeh [17]

Answer:

20 miles per hour

Step-by-step explanation:

Given that the train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hours, the car caught up

Which means that the car travelled the same distance in 3 hours as the train travelled in 9 + 3 = 12 hours

Let the distance be d

Given the speed of car is 80 miles per hour

We know that $speed=\frac{distance }{time}$