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Daniel [21]
3 years ago
15

Answer the question math

Mathematics
1 answer:
Lerok [7]3 years ago
7 0

Answer:

7y-10

Step-by-step explanation:

9y-\frac{1}{2}\left(4y+20\right)

To simplify this expression, first use the distributive property to distribute \frac{1}{2}.

9y-\frac{1}{2}(4y)+-\frac{1}{2}(20)

Simplify.

9y+-2y+-10

Combine like terms, 9y and -2y.

7y-10

The simplification of 9y-\frac{1}{2}(4y+20) is 7y-10.

I hope this helps ^^

Good luck

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Y ^-7 / y ^-13 20 POINTS PLEASE HELP
kkurt [141]

Answer:

The answer is

<h2>{y}^{6}</h2>

Step-by-step explanation:

<h3>\frac{ {y}^{  - 7} }{ {y}^{ - 13} }</h3>

To solve the expression we use the rules of indices

Since the bases are the same and are dividing we subtract the exponents

That's

<h3>\frac{ {a}^{x} }{ {a}^{y} }  =  {a}^{x - y}</h3>

So we have

<h3>\frac{ {y}^{ - 7} }{ {y}^{ - 13} }  =  {y}^{ - 7 -  - 13}  =  {y}^{ - 7 + 13}</h3>

We have the final answer as

<h3>{y}^{6}</h3>

Hope this helps you

4 0
3 years ago
What’s the probability of getting each card out of a deck?
VMariaS [17]

Answer:

a. 1/13

b. 1/52

c. 2/13

d. 1/2

e. 15/26

f. 17/52

g. 1/2

Step-by-step explanation:

a. In a deck of cards, there are 4 suits and each of them has a 7. Therefore, the probability of drawing a 7 is:

P(7) = 4/52 = 1/13

b. There is only one 6 of clubs, therefore, the probability of drawing a 6 of clubs is:

P(6 of clubs) = 1/52

c. There 4 fives (one for each suit) and 4 queens in a deck of cards. Therefore, the probability of drawing a five or a queen​​​​​​​​​​​ is:

P(5 or Q) = P(5) + P(Q)

= 4/52 + 4/52

= 1/13 + 1/13

P(5 or Q) = 2/13

d. There are 2 suits that are black. Each suit has 13 cards. Therefore, there are 26 black cards. The probability of drawing a black card is:

P(B) = 26/52 = 1/2

e. There are 2 suits that are red. Each suit has 13 cards. Therefore, there are 26 red cards. There are 4 jacks. Therefore:

P(R or J) = P(R) + P(J)

= 26/52 + 4/52

= 30/52

P(R or J) = 15/26

f. There are 13 cards in clubs suit and there are 4 aces, therefore:

P(C or A) = P(C) + P(A)

= 13/52 + 4/52

P(C or A) = 17/52

g. There are 13 cards in the diamonds suit and there are 13 in the spades suit, therefore:

P(D or S) = P(D) + P(S)

= 13/52 + 13/52

= 26/52

P(D or S) = 1/2

6 0
3 years ago
Number 9 and number 10?
Strike441 [17]
IDK really, but you can ask the question on brainly.
5 0
3 years ago
Exsplain too please, how has your day been btw?
bogdanovich [222]

Answer:

2⁹

Step-by-step explanation:

{2}^{5}  \times  {2}^{4}  \\  =  {2}^{5 + 4}  \\  =  {2}^{9}

5 0
3 years ago
Read 2 more answers
If p ^ q= p ^ r and p v q= p v r then prove: r=q
Ugo [173]

Answer:

Can not prove that

Step-by-step explanation:

In case of p=1 and v=0, or p=0  => two equation alway true.

4 0
3 years ago
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