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aev [14]
3 years ago
8

How to check the correctness of a subtraction answer

Mathematics
2 answers:
Dima020 [189]3 years ago
8 0

well lets say i have to subtract 34 and 20 which is 14 so i would take the sum and the subtractor which is 20 the i would do 20 plus 14 which is 34

Hope this helps!

kolezko [41]3 years ago
3 0
You have to do inverse operations, so for subtraction, addition.
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Lisa is choosing an outfit. She has two pairs of pants: jeans and khakis, two shirts:white and red, and two pairs of shoes: boot
Brums [2.3K]

Answer:

12

Step-by-step explanation: Hope this helps

7 0
3 years ago
Find the probability of being dealt a full house. (Round your answer to six decimal places.)?
vesna_86 [32]

I'm assuming a 5-card hand being dealt from a standard 52-card deck, and that there are no wild cards.

A full house is made up of a 3-of-a-kind and a 2-pair, both of different values since a 5-of-a-kind is impossible without wild cards.

Suppose we fix both card values, say aces and 2s. We get a full house if we are dealt 2 aces and 3 2s, or 3 aces and 2 2s.

The number of ways of drawing 2 aces and 3 2s is

\dbinom42\dbinom43=24

and the number of ways of drawing 3 aces and 2 2s is the same,

\dbinom43\dbinom42=24

so that for any two card values involved, there are 2*24 = 48 ways of getting a full house.

Now, count how many ways there are of doing this for any two choices of card value. Of 13 possible values, we are picking 2, so the total number of ways of getting a full house for any 2 values is

2\dbinom{13}2\dbinom42\dbinom43=3744

The total number of hands that can be drawn is

\dbinom{52}5=2,598,960

Then the probability of getting a full house is

\dfrac{2\binom{13}2\binom42\binom43}{\binom{52}5}=\dfrac6{4165}\approx\boxed{0.001441}

4 0
3 years ago
Y = 3x + 3.5<br> Graph it
Ber [7]
So we have to start at 3.5 up the y axis. Then, we have to move 3 slots to the right. Let me know if this helps!
3 0
3 years ago
Read 2 more answers
-6-2b=-8. What's the answer
Ksivusya [100]

Answer: B = 1

Step-by-step explanation: The first step is to add 6 to both sides of the equation to get -2b = -2

You then divide both sides by negative 2 so you can get a positive

dividing both sides by negative 2 will leave you with 1b = 1

so

b = 1

8 0
2 years ago
A line passes through the points (2,21) and (8,27). Write a linear function rule in terms of x and y for
tatiyna
We have two points so we can find the gradient using y1-y2/x1-x2
gradient = 21-27/2-8
= 1
we know the form for any linear equation is y = mx + c
we have m and a point so we can substitute in point (2,21) to find c
21 = 1 x 2 + c
c = 19
therefore, the equation is y = x + 19
6 0
2 years ago
Read 2 more answers
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