All categories

3 years ago

Please help me solve these!!!

Mathematics

1 answer:

Marat540 [252]3 years ago

8 0

Answer:

Maybe add or Multply every surface then add the surfaces then get your answer

Step-by-step explanation:

Maybe pay attention next time.

You might be interested in

What is the number of ways to arrange 6 objects from a set of 10 different objects

bagirrra123 [75]

10!/(10-6)! =
3628800/24 =
151200
 So the answer is 151200

6 0

3 years ago

Read 2 more answers

Amswer in its lowest terms 5 3/5 + 2 1/10

Nataly [62]

$5 \frac{3}{5} + 2 \frac{1}{10} \\ = \frac{28}{5} + \frac{21}{10} \\ = \frac{56}{10} + \frac{21}{10} \\ = \frac{77}{10} \\ = 7 \frac{7}{10}$

Hope it helps and is useful :)

3 0

2 years ago

Read 2 more answers

A water wheel has a radius of 18 feet. the wheel is rotating at 5 revolutions per minute. find the linear speed, in feet per min

makkiz [27]

Answer:

The linear speed is

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

we have

substitute

step 2

Find the linear speed in feet per minute

we know that

The wheel is rotating at 10 revolutions per minute

Convert revolutions to feet

Remember that

One revolution is equal to the circumference of the circle

10 revolutions is equal to

therefore

The linear speed is

8 0

2 years ago

Find the number of permutations of the first 9 letters of the alphabet, taking 4 letters at a time.

Vinil7 [7]

Solution-

First 9 letters of alphabet are- A,B,C,D,E,F,G,H,I

Total number of ways of selection of 4 letters from 9 alphabets = 9C4

=9!÷((4!).(9-4)!) = 9!÷(4!×5!) = (9×8×7×6)÷(24) = 126

The number of ways of arranging these 4 numbers = 4! = 24

∴ Total number of possible permutations = 9C4×4! = 126×24 = 3024

∴ option number 2 is correct.

8 0

3 years ago

Read 2 more answers

In the expression below, a is an integer. 12^3+ax-20 if 3x+4 is a factor of the expession above, what is the value of a

SVEN [57.7K]

Our function is:

$f(x)=12^3+ax-20$

Now, if $3x+4$ is a factor of $f(x)$ then $x=\frac{-4}{3}$ must satisfy the equation:

So, $f(\frac{-4}{3} )=0$

Putting $x=\frac{-4}{3}$

We get,

$f(\frac{-4}{3} )=12^3+a(\frac{-4}{3} )-20=0$

$12^3+\frac{-4}{3} a-20=0$

$\frac{-4}{3} a=20-12^3=20-1708$

$a=-1708 \times \frac{-3}{4} =1281$

So, the value of 'a' for the given expression is 1281.

4 0

3 years ago