All categories

3 years ago

What is the property shown 3a x 9c = 27ac

Mathematics

1 answer:

AveGali [126]3 years ago

6 0

I think its the Associative property

You might be interested in

Simply (tan^2 x - sec^2 x)(sin^2 x + cos^2 x)

kati45 [8]

we can use pythagorean identieis

remember that $sin^2(x)+cos^2(x)=1$

also remember that $tan(x)=\frac{sin(x)}{cos{x}}$ and $sec(x)=\frac{1}{cos(x)}$

so if we take $sin^2(x)+cos^2(x)=1$ and divide both sides by $cos^2(x)$ we get

$\frac{sin^2(x)}{cos^2(x)}+\frac{cos^2(x)}{cos^2(x)}=\frac{1}{cos^2(x)}$

$(\frac{sin(x)}{cos(x)})^2+1=(\frac{1}{cos(x)})^2$

$tan^2(x)+1=sec^2(x)$

subtracting $1+sec^2(x)$ from both sides

$tan^2(x)-sec^2(x)=-1$

now subsitute into original problem

$\frac{tan^2(x)-sec^2(x)}{sin^2(x)+cos^2(x)}=$

$\frac{-1}{1}=$

$-1$

the answer is -1

6 0

3 years ago

Which of the following relation graphs represents a function?<br> A.

Makovka662 [10]

Answer:

The third one (parabola)

Step-by-step explanation:

Do a vertical line test.

Basically draw vertical lines over the function. If the x-value has more than one y-value then it is a relation and not a function

5 0

3 years ago

What is the answer need help fast

ExtremeBDS [4]

The answer is D. (hope this helps :)

4 0

4 years ago

A truck with 36-in.-diameter wheels is traveling at 55 mi/h.

bagirrra123 [75]

Answer:

The wheels make 512 revolutions per minute

Step-by-step explanation:

Diameter of truck = 36 in

Speed = 55 mi/h

Revolutions per minute =?

Radius r = diameter / 2

r = 36/2

r = 18 inches

Speed = 55 mi/h

1 mile = 63360 inches

55 miles = 55*63360 inches

55 miles = 3484800 inches

1 hr = 60 minutes

Speed = 3484800 inches/60 minutes

Speed = 58,080 inches/min

The formula used to calculate the revolutions per minute is:

revolutions = speed/Circumference

revolutions = 58,080 / 2*3.14*18

revolutions = 58,080 /113.4

revolutions = 512.16

revolutions = 512 revolutions per minute

So, The wheels make 512 revolutions per minute

7 0

3 years ago

An ice cream shop chose 25 customers at random and asked each to name a

ale4655 [162]

Answer:

Step-by-step explanation:

Its 6 or 4, but leaning toward 6

6 0

3 years ago