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3 years ago

Is (-5,-5) a solution of y \geq -2x +4y≥−2x+4 ?

Mathematics

1 answer:

FromTheMoon [43]3 years ago

7 0

Answer:

Step-by-step explanation:

Substitute the values and see.

-5 ≥ -2(-5) +4

-5 ≥ 14 . . . . . . . . FALSE

The point (-5, -5) is not a solution to the inequality

y ≥ -2x +4

___

A graph can quickly show you this.

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A scuba diver reaches an elevation of -78 feet, which is a depth of 78 feet.

gavmur [86]

Answer:

true

Step-by-step explanation:

depth is how far down you are from the surface

6 0

3 years ago

BRAINLEST Find the sum of the first 6 terms of the infinite series: 1 - 2 + 4 - 8+...

arsen [322]

Answer:

-21

Step-by-step explanation:

1-2+4-8+16-32

=-21

6 0

3 years ago

Read 2 more answers

The graph of F(x) can be stretched vertically and flipped over the x axis to produce the graph of G(x) if F(x)=x^2 which of the

ladessa [460]

Answer:

g(x) = -5x²

(option B)

Step-by-step explanation:

we know that our original graph, f(x) = x² is a parabola.

So, we can consider what happens when we adjust the function/equation of a parabola.

when we "vertically stretch" a parabola, we are increasing the value of x.

think of it this way: the steepness of a slope is rise over run. If we rise ten, and run one, that's going be a lot more steep than if we rise 1, run 1.

Let's say our x = 5

if f(x)=x²

f(5) = 25

> y value / steepness is 25

f(x) = 3x²

f(5) = 75

> y value / steepness is 75

So, we are looking for an equation with an increase in x present.

When a parabola has been flipped over the x-axis, we know that the original equation now includes a negative

suppose that x = 1

if y = x² ; y = 1² = 1

if y = -(x²) ; y = -(1²) ; y = -1

So, when we set x to be negative, we make our y-values end up as negative also (which makes the graph look as if it has been flipped upside-down)

This means that we are looking for a function with a negative x value.

So, we are looking for a negative x-value that is multiplied by a number >1

The graph that fits our requirements is g(x) = -5x²

hope this helps!!

6 0

2 years ago

PLEASE HELP...........

Vlad [161]

Answer: Just do 2355

Step-by-step explanation: its that

7 0

3 years ago

Read 2 more answers

What is X over 8 =9

Liula [17]

Answer: x = 72

Step-by-step explanation: Although the problem is saying "X over 8", this really signifies that the x is being divided by 8 which is what a fraction is, numerator divided by a denominator.

Let's first undo what has been done. Since our variable is being divided by 8, we'll undo that by multiplying by 8 on both sides. It's important to remember, whatever you do on one side,

you must do to the other side.

If you look now, the 8 in the numerator and the 8 in the denominator will divide out and it will leave us with our variable which is x. Working on the other side now, 9 x 8 is equal to 72 so x = 72 is our answer.

We can check our answer by plugging a 72 back into the original equation. So we have 72/8 = 9 which is a true statement

so our answer is correct.

4 0

3 years ago