All categories

3 years ago

Please help me with question #13

Mathematics

1 answer:

lesantik [10]3 years ago

4 0

When dividing these, the powers are subtracted form each other.
We could split up the fraction into r's, s's, and t's.
r^-3 / r^2 = r^-5 [think of it as -3 -2]
s^5 / s = s^4
t^2 / t^-2 = t^4 [2 - - 2 = 4]

A negative power places it on the bottom of the fraction and the minus sign is removed from the power.
So the answer is A: (s^4)(t^4)/r^5

You might be interested in

Simplify −0.5(6.5). −3.5 −3.25 3.25 3.5

creativ13 [48]

Answer:

-3.25

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Sherry has a standard deck of cards. The deck has 52 total cards and contains 4 suits: hearts, clubs, diamonds, and spades. Each

tatyana61 [14]

Answer:

c) Events A and B are independent events.

The outcomes of events A and B are dependent on each other.

P(A and B)=P(A)•P(B)

Step-by-step explanation:

Given:

Total number, n = 52

Each suit contains 13 cards: 2 to 10, a jack, a queen, a king, and an ace.

Since there are 4 suits, it means the number of each card is four.

P(A) = event of picking a king

P(B) = event of picking a 3

Therefore the probability of picking a king = $P(A) = \frac{4}{52}$

Probability of picking a 3 = $P(B) = \frac{4}{52}$

Since only a card is picked, the probability a king is picked after picking a 3 is 0.

i.e P(A|B) = 0 ≠ $P(A) = \frac{4}{52}$

option A is wrong

The probability a 3 is picked after picking a king is 0.

i.e P(B | A) = 0 ≠ $P(B) = \frac{4}{52}$

option B is wrong

Events A and B are independent events.

The outcomes of events A and B are dependent on each other.

P(A and B)=P(A)•P(B)

Option C is correct.

7 0

3 years ago

Find the smallest value of k such that the LCM of k and 6 is 60

Advocard [28]

Answer: The smallest valuest value for k is 10, such that LCM of k and 6 is 60.

Step-by-step explanation:

We know that, LCM = Least common multiple.

For example : LACM of 12 and 60 is 60.

If LCM of k and 6 is 60.

i.e. the least common multiple of k and 6 is 60.

Since, 10 x 6 = 60.

The smallest valuest value for k should be 10, such that LCM of k and 6 is 60.

Hence, the smallest value of k is 10.

5 0

3 years ago

3y + 2x - 10 = 0 find m

Hitman42 [59]

Step-by-step explanation:

3y + 2x - 10 = 0

in standard form

2x + 3y -10=0

as (ax + by - c = 0)

m = -a/b

= -2/3

3y + 2x - 10 = 0

make y subject

y = -2/3x + 10/3

6 0

3 years ago

4.6 > x + 3/4

Bess [88]

Answer:12

Step-by-step explanation:

Because I’m right anywhere

6 0

2 years ago

Read 2 more answers