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2 years ago

Given that Q(x)=2x^2 +5x-3 find and simplify Q(a+h)-Q(a-h)

Mathematics

1 answer:

Semenov [28]2 years ago

5 0

Step-by-step explanation:

here is the answer. Feel free to ask for more.

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46 POINTS!!!

charle [14.2K]

Answer:

Step-by-step explanation: 57.7r + 23.23 = 2.57 57.7/57.7 = -20.66/57.7

- 23.23 - 23.23

57.7r = -20.66

6 0

2 years ago

The area of the large rectangle is twice the area of the small rectangle. What is the value of x?Two rectangles are shown. The l

kupik [55]

Answer:

B. 8 cm.

Step-by-step explanation:

The area of a rectangle is the length*width.

The area of the larger rectangle is 4*12=48.

The area of the smaller rectangle is 3*x=3x.

If the larger rectangle's area is twice that of the smaller rectangle, then we can say 48=2*3x.

Let's solve for x

48=2*3x

48=6x

x=8

3 0

2 years ago

You buy a computer for $3,000. Its value depreciates by 8% every month. Write an equation to represent the situation. How much i

timofeeve [1]

Answer:

y=3,000(0.92)^x

Step-by-step explanation:

your computer is worth $2, 336.04

8 0

3 years ago

Can anybody help with this?

pickupchik [31]

I think it’s the last one

5 0

2 years ago

69 points!!!

Amiraneli [1.4K]

Answer:

C) The solution for the given system of equations are A(0,-5) and B(-4,3)

Step-by-step explanation:

The given system of equation are : $x^{2} + y^{2} = 25\\2x + y = -5$

from equation 2, we get y = -5 - 2x .

Put the above value of y in the equation (1).

We get: $x^{2} + y^{2} = 25 \implies x^{2} + (-5-2x)^{2} = 25$

By ALGEBRAIC IDENTITY:

$(a+b)^{2} = a^{2} + b^{2} + 2ab\\ (-5-2x)^{2} = (-5)^{2} + (-2x)^{2} + 2(-5)(-2x)$

or, $x^{2} + (-5-2x)^{2} = 25 \implies x^{2} + (25 + 4x^{2} + 20x) = 25$

or, $5x^{2} + 20x = 0 \implies x(5x + 20) = 0$

⇒ x = 0 or, x = -20/5 = -4

So, the possible values for x are: x = 0 or x = -4

If x = 0, y = -5-2x = -5-2(0) = -5

and if x = -4, y = -5 -2(-4) = -5 + 8 = 3

Hence, the solution for the given system of equations are A(0,-5) and B(-4,3)

8 0

2 years ago