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Kaylis [27]
3 years ago
11

Could you guys simplify this for me please.. i’m not that good at math so I might as a few more

Mathematics
2 answers:
asambeis [7]3 years ago
8 0
It’s b

when you’re multiplying with an exponent, you’re multiplying that number however many times the exponent says, against itself. For example, seven to the third, is 7×7×7. So if you add seven to the third power plus the seven to the fourth power. You should get seven to the seventh power.
Nataly [62]3 years ago
6 0

Answer:

B

Step-by-step explanation:

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"If two cards are drawn at random without replacement from a standard deck, find the probability that the second card is a face
PolarNik [594]

Answer:

C. P(F|Q) = \dfrac{11}{51}

Step-by-step explanation:

it is to be noted that the question is only asking for the probability of the 2nd card given that the first card was queen (P(F|Q)), and not asking for the probability of 1st card to be queen and 2nd card to be faced cardP(Q\,\text{and}\,F)

we can represent it in an expression:

P(Q\,\text{and}\,F) = P(Q)P(F|Q)

here P(Q) is the first event: Queen

and P(F|Q) is the second event: Faced card, given that the Queen is taken

--------------------------------

we only need to know what is P(F|Q), and that can be found directly found:

let's start with P(Q), what is the probability that the first card is a Queen? Well, there are 4 queens in a standard deck of 52 cards, so the probability should be:

P(Q) = \dfrac{4}{52}

now we have taken our queen, but we haven't put it back in the deck. so the amount of cards in the deck now are 51.

let's calculate P(F|Q),now that one queen is taken out, what is the probability of the next card to be a faced card? Well, in a standard deck there are 12 faced cards, but in our case one queen is already taken out, so there are 11 faced cards in our deck!

P(F|Q) = \dfrac{11}{51}

and this our answer!

8 0
3 years ago
Expand and simplify (3x-1)(2x+5)
Mrac [35]

(3x-1)*(2x+5)=

(6x²+15x-2x*5)=

6x²+13x-5

6 0
4 years ago
–x – 7 = 16 please help me
atroni [7]
Move the -7 to the right, its sign will flip (do you know why?)
Negate both sides to change -x to x

-x = 16+7
-x = 23
x = -23
7 0
4 years ago
Read 2 more answers
Pleasssssssssssssssssssssssse help ASAP
serious [3.7K]

Answer:

Yellow = 18 spools of ribbon

Blue = 15 spools of ribbon

Bobby will have 3 more spools of yellow ribbon.

4 0
3 years ago
Simplify an expression for the perimeter of the rectangle shown.
Zanzabum

The perimeter of the rectangle is P = (17.2x₊16.4).

Given that,

Length, l = 8.6x₊3

Width, b = 5.2

In the formula P=2l+2w, where l is the rectangle's length and w is its width, the perimeter P of a rectangle is determined. Using the formula A=l×w, where l is the length and w is the width, we can determine the area A of a rectangle.

We need to find the expression for the perimeter of the rectangle. The formula for the perimeter of the rectangle is given by :

P=2(l₊b)

Putting values of l and b in the above formula:

p = 2(8.6x ₊ 3 ₊ 5.2)

= 2(8.6x ₊ 8.2)

= 2(8.6x) ₊ 2(8.2)

= 17.2x ₊ 16.4

So, the required perimeter of the rectangle is 17.2x₊16.4.

Learn more about Area Perimeter here:

brainly.com/question/25292087

#SPJ9

4 0
1 year ago
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