All categories

3 years ago

What is the greatest common factor of 12a and 9a^2?A) 9B) 36C) 3aD) 12a^2

Mathematics

2 answers:

sergejj [24]3 years ago

7 0

Answer:

Step-by-step explanation:

Alexeev081 [22]3 years ago

3 0

The answer is C (3a)

You might be interested in

Select the correct answer. Which table represents a linear function with a greater y-intercept than that of the function represe

Sladkaya [172]

Answer:

Step-by-step explanation:

i just know i guess

5 0

2 years ago

Read 2 more answers

Solve for x. 4−(2x+4)=5 x=6 x=−52 x=−10 x=32

sashaice [31]

Answer:

Step-by-step explanation:

4−(2x+4)=5

4-2x - 4 =5

-2x = 5

x= -5/2 = -2.5

5 0

3 years ago

Kathy is fencing in her yard that has an area of 800 square feet. Her yard is in the shape of a rectangle where the length is 60

anygoal [31]

Answer:

The dimensions of the yard are W=20ft and L=40ft.

Step-by-step explanation:

Let be:

W: width of the yard.

L:length.

Now, we can write the equation of that relates length and width:

$L=5W-60$ (Equation #1)

The area of the yard can be expressed as (using equation #1 into #2):

$Area=W*L=W*(5W-60)$ (Equation #2)

Since the Area of the yard is $800 ft^2$ , then equation #2 turns into:

$800=W*(5W-60)$

Now, we rearrange this equation:

$800=W*(5W-60)//800=5W^2-60W//5W^2-60W-800=0$

We can divide the equation by 5 :

$W^2-12W-160=0$

We need to find the solution for this quadratic. Let's find the factors of 160 that multiplied yields -160 and added yields -12. Let's choose -20 and 8, since $(-20)*8=160$ and $-20+8=-12$ . The equation factorised looks like this:

$(W-20)(W+8)=0$

Therefore the possible solutions are W=20 and W=-8. We discard W=-8 since width must be a positive number. To find the length, we substitute the value of W in equation #1:

$5*20-60=40$