All categories

3 years ago

Plz help me I need this for a quiz

Mathematics

1 answer:

Serjik [45]3 years ago

6 0

All I know that is that 15) is -1

You might be interested in

A pump can fill a swimming pool in 8 hours. The pool also has a drain that can empty the pool in 10 hours. If someone turns on t

cluponka [151]

Answer:

40 hours will it take for the pool to fill.

Step-by-step explanation:

A pump can fill a swimming pool in 8 hours.

Work done by pump to fill in 1 hour is $\frac{1}{8}$

The pool also has a drain that can empty the pool in 10 hours.

Work done by pump to drain in 1 hour is $\frac{1}{10}$

If someone turns on the pump to fill the pool, but forgets to shut the drain.

Work done by both pipe in 1 hour is

$W=\frac{1}{8}-\frac{1}{10}$

$W=\frac{10-8}{80}$

$W=\frac{2}{80}$

$W=\frac{1}{40}$

Both pipe filled $\frac{1}{40}$ part of pool in hours = 1

Both pipe filled complete pool in hours = $\frac{1}{\frac{1}{40}}=40$

Therefore, 40 hours will it take for the pool to fill.

7 0

3 years ago

Let A (10, 11, 12, 13 and B (a, b, c, d) Let g be a function from A to B defined by f(10, a), (11,a), (12, b), (13,b)) What is t

Irina-Kira [14]

Answer:

d does not have an inverse image

Step-by-step explanation:

From the question we are told that

The first set is A (10, 11, 12, 13 )

The second set is B (a, b, c, d)

The function that from A to B is f(10, a), (11,a), (12, b), (13,b))

Generally for a function defined by (x,y), y is the image of x while x is the inverse image of y

Now considering the function we are given and the value d we see that and inverse image is not defined for d in the function

hence d does not have an inverse image

8 0

4 years ago

What is the greatest common factor of 15 and 64

Neko [114]

35.
Hope my answer helps.

3 0

3 years ago

A tree that is 100 feet tall casts a shadow that is 150 feet long. Determine the angle at which the rays of the sun hit the grou

Fofino [41]

The answer is 33 degrees. Hope this helped <span />

8 0

3 years ago

Read 2 more answers

What's 3 copies of 2 tenths

schepotkina [342]

Multiply 2/10 by 3/1 and you should end up with 6/10

8 0

3 years ago