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3 years ago

Which statement include two quantities in the real world that are additive inverses

1 answer:

5 0

Right answers: A hot-air balloon ascends 2000 ft from the ground and then descends 2000 ft.

Noa hiked 2 mi up a mountain trail and then hiked 2 mi down the trail.

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The equation A = x(x-4) describes the area, A, of a rectangular flower garden, where x is the width in feet.

BabaBlast [244]

Answer:

The flower garden width would be 6 ft

Step-by-step explanation:

A = 12 ft^2 = x(x + 4) becomes:

x^2 + 4x - 12 = 0, or (by completing the square) x^2 + 4x + 4 - 4 - 12 = 0

Thus, we have (x + 2)^2 - 16 = 0, or (x + 2)^2 = 16

Taking the square root of both sides yields x + 2 = ±4.

In this context only a positive x value makes sense: x = 2 + 4 => x = 6.

The flower garden width would be 6 ft. The other dimension would be 6 - 4, or 2, ft.

4 0

3 years ago

When x-y=3 work out the value of y-x

GalinKa [24]

The value of y-x is (-3)

Solution:

Given: The value of x-y=3

To find: The value of y-x

$\bold{x-y=3\rightarrow (1)}$

Let's multiply the equation (1) by (- 1) on both sides,

$\Rightarrow\bold{(x - y)\times(- 1) = 3\times(- 1)}$

$\Rightarrow\bold{-(x-y)=-3}$

On multiplying the sign,

$\Rightarrow\bold{(-x+y)=-3}$

The above equation can also be written as,

$\Rightarrow\bold{y-x=-3\rightarrow \text{(The required equation)}}$

Multiplication of signs:

$\Rightarrow( + )\times( + ) = ( + )$

$\Rightarrow( + )\times( - ) = ( - )$

$\Rightarrow( - )\times( + ) = ( - )$

$\Rightarrow( - )\times( - ) = ( + )$

In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.

5 0

3 years ago

I need help on this question

MA_775_DIABLO [31]

Answer:

1313.19 in

Step-by-step explanation:

have a nice dayyy :)

7 0

3 years ago

Identify whether each phrase is an expression, equation, or inequality.

Andreyy89

Answer:

Step-by-step explanation: 4y+8=9 is an equation. 3-2 is an expression. 7y<6 is an inequality!

7 0

3 years ago

PLEASE HELP ME FOR EXTRA POINTS AND BRAINLIEST ANWSER

Korolek [52]

Answer would be 3/5 (filler)

7 0

3 years ago