All categories

3 years ago

I don't understand these

Mathematics

1 answer:

RUDIKE [14]3 years ago

5 0

The answer is A ! :)

You might be interested in

How do I solve this, pretty urgent please.

Andreas93 [3]

Answer:

Step-by-step explanation:

<u>Substitute:</u>

$x^{0.5} = y$

<u>Then the expression becomes:</u>

$(\dfrac{1+y^3}{1-y+y^2}-y) \dfrac{1-y^2}{1-y} -y=\\$
$(\dfrac{(1+y)(1-y+y^2)}{1-y+y^2}-y) \dfrac{(1-y)(1+y)}{1-y} -y=$
$(1+y-y)(1+y)-y=$
$1(1+y)-y=$
$1+y-y=$
1

The result is 1 regardless the value of x other than 1.

5 0

3 years ago

A bag contains eleven equally sized marbles, which are numbered. Two marbles are chosen at random and replaced after each select

Digiron [165]

Answer:

B. $\frac{24}{121}$ .

Step-by-step explanation:

Total number of marbles = 11.

Since, after choosing the first marble, we are putting it back and then the second marble is chosen.

As, there are 4 shaded marbles.

So, the probability of getting the first marble shaded = $\frac{\binom{4}{1}}{\binom{11}{1}}$ = $\frac{4}{11}$

Also, there are 6 odd labeled marbles.

So, the probability of getting the second marble being odd labeled = $\frac{\binom{6}{1}}{\binom{11}{1}}$ = $\frac{6}{11}$

So, the probability of getting the first marble shaded and second marble labeled odd = $\frac{4}{11}\times \frac{6}{11}$ = $\frac{24}{121}$ .

Hence, the required probability is $\frac{24}{121}$ .

4 0

3 years ago

Read 2 more answers

4 sin(2x) = 4 cos(x)

Virty [35]

Its simple check symbolab.com

8 0

3 years ago

A regular mile an hour is 5,280 feet per hour. a knot is ________.

trapecia [35]

52.8 because 5,280/100=52.8
So the knot is 52.8

3 0

3 years ago

Write an expression that represents the product of q and 5 Divided Into 5

shtirl [24]

1!!!!!!!!!!!!!¡¡!one because 5/5 = 1

6 0

3 years ago