All categories

3 years ago

Solve the equation using mental math15-x=9

1 answer:

5 0

In your head....9-15= -6...then (in your head) you would divide both sides by a negative to get x alone. So x=6.. (In your head).

You might be interested in

Find the length of a square whose diagonal is 15cm

Vladimir [108]

2a^2 = 225
So a^2 = 225/2

4 0

2 years ago

The wall, shown above in Figure 105.1401, has an overall length that is 37’ and 8 1/4" . Three receptacle outlets are to be inst

jek_recluse [69]

Answer:

simplier

Step-by-step explanation:

8 0

3 years ago

The volume of a cylinder of radius 3r and height 6r is given by TT(3r)2(6r). Simplify the expression.

OLga [1]

Answer: $\pi 36r^{2}$

Step-by-step explanation:

ALRIGHT ARE YOU READY FOR EPIC MATH TIME?

because i know i am. so lets get this bread.

WATCH: we have $\pi (3r)2(6r)$

interesting... that first character is called pi. maybe i should have said, "lets get this pi".

so now lets do some algebra. i am going to work from right to left. lets multiply 6r by 2. that gives us 12r. now we have... $\pi (3r)(12r)$

WE ARE MAKING EPIC PROGRESS, AREN'T WE?

lets multiply 12r by 3r. then we have....

$\pi 36r^{2}$

notice how i multiplied 12 by 3 and also r by r (which gives 36 and $r^{2}$ respectively)

so your simplified expression is: $\pi 36r^{2}$

6 0

3 years ago

*MAKE SURE YOU ANSWER CORRECTLY WITH DETAILS, WILL CHOOSE BRAINLIEST * Describe a hemisphere of this picture and explain how it

SVEN [57.7K]

Answer:

Volume of the hemisphere = $\frac{2}{3}\pi r^{3}$

Step-by-step explanation:

It's a picture of a globe and a globe of the Earth is in the shape of a sphere.

We know equator divides the earth into two equal halves and these equal halves are called as "hemisphere".

Therefore, a line joining the two extreme points of the diameter of the Earth divides the Earth into two hemispheres.

If the radius of the Earth is 'r',

Volume of the hemisphere = $\frac{2}{3}\pi r^{3}$

6 0

3 years ago

Hi and hello have a nice day

Inga [223]

Answer:

Hey , stay safe <3

Step-by-step explanation:

Not sure if gif is working

8 0

3 years ago