All categories

3 years ago

The rectangle below has an area of x^2-9x

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

5 0

Answer:

(x+3)m

Step-by-step explanation:

Area of a rectangle = Length × width

Given the area = (x²-9)m²

Width = (x-3)m

Length of the rectangle = Area/Width

Length of the rectangle = x²-9/x-3

= x²-3²/x-3

Note that according to different of two square, a²-b² = (a+b)(a-b)

Therefore x²-3² = (x+3)(x-3)

Length of the rectangle

= (x+3)(x-3)/x-3

= x+3

The length of the rectangle is (x+3)m

You might be interested in

!!!!Cosines / sines . Find a and round to the nearest 10th.

nadya68 [22]

I think Erica said I messed this one up. It looks the same. Oh yeah I think this was the one I thought $a=1.8=3\sqrt{2}-\sqrt{6}$ , Answer: 1.8.

Let's do it again.

$\dfrac{a}{\sin(180 - (15+105))}=\dfrac{2}{\sin 105^\circ}$

$a = \dfrac{2 \sin(60)}{\sin 105^\circ}$

$a \approx 1.8$

Yes, same as before.

4 0

4 years ago

Richie wants to paint his bedroom ceiling in for walls. The ceiling in each of the walls are 8' x 8'. A gallon of paint covers 4

Shkiper50 [21]

The answer is 1.6
Pls thank me if the answer is correct

5 0

4 years ago

2000 people are selected randomly from a certain population and it is found that 389 people in the sample are over 6 feet tall.

Airida [17]

Answer: 0.195

Step-by-step explanation:

given data:

population = 2000 people.

people Who are over 6 feet tall = 389.

Solution:

the point estimate of people over 6feet tall

= no of people over 6 feet tall / total population size

= 389/2000

= 0.195

the point estimate of people over 6 feet tall is 0.195

8 0

3 years ago

FITNESS A fitness center has set a goal to have 500 members. The fitness center already has 150 members and adds an average of 2

Mars2501 [29]

Answer:

It will take 14 months.

Step-by-step explanation:

Re-calculate the equation.

6 0

3 years ago

Please help asap!!!

yulyashka [42]

Answer:

This is a trick that I have learned

Step-by-step explanation:

Just right click on the question or answer

Then click inspect element

and the question will tell you which answer is actually correct

and the answer will tell you if it is correct or not.

4 0

3 years ago