MATHEMATICS MIDDLE SCHOOL

2. Write the probability of each event when choosing one card at random from a standarddeck of 52 cards with no jokers.
P(the king of diamonds) =
b.
Pla heart) =
P(a red three) =
d.
P(a red card) =

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

(King of Diamonds) = 1/52

(A Heart) = 1/4

(Red Three) = 1/26

(Red Card) = 1/2

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Jerome bought 8 packs of baseball cards at a garage sale. each pack had 10 cards. he gave his younger sister 3 cards from each pack.how many cards does jerome have left

A square has vertices J(–1, 4), U(5, 4), M(5, –2), P(–1, –2). After a dilation, square J U M P has vertices J(–0.5, 2), U(2.5, 2), M(2.5, –1), P(–0.5, –1). What is the scale factor of the dilation?

Answers

The scale factor would be multiplies by half because 1x.5=.5. And it did that with all the numbers so the answer is .5

Please help me! im really stuck on this one!

Answers

Dependent variable. Its fairly easy if you plug in the problem into
 :)

Show your work pleasejohn wants to know the square footage of his living room in order to lay new hardwood floors. The living room has vertices at the coordinates (1,5) (11,3) (3,15) (13,13). If each unit one the coordinate plane is one square unit, then how many square feet of flooring must john buy in order to cover his entire living room?

extension questions:
1) john wants to buy 10% more flooring than his room requires to account for errors. If boxes of flooring cover 20 square feet, how many boxes will john need in order to account for errors in measurement?
2) if hardwood flooring costs $3.98 per square foot, what will it cost john to put new floors in his living room?

Answers

1) would be 2 boxes because the room is 25 ft²
2) $99.50 if you do 25 x 3.98, or if they want 40 x 3.98 it would be $159.20

Find the sum and express it in simplest form (5n^3+7n+2)+(-n^3-6n+5)

Answers

Answer:

 4n^3 +n +7

Step-by-step explanation:

(5n^3+7n+2)+(-n^3-6n+5)

I like to line them up vertically

 5n^3+7n+2

-n^3  -6n+5

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

 4n^3 +n +7

Answer:

\boxed{\bold{4n^3+n+7}}

Step By Step Explanation:

Remove Parenthesis: (a) = a

\bold{5n^3+7n+2-n^3-6n+5}

Group Like Terms

\bold{5n^3-n^3+7n-6n+2+5}

Combine Similar Elements: \bold{7n-6n=n}

\bold{5n^3-n^3+n+2+5}

Combine Similar Elements: \bold{5n^3-n^3=4n^3}

\bold{4n^3+n+2+5}

Add: \bold{2+5=7}

\bold{4n^3+n+7}

➤ \boxed{\bold{Mordancy}}

What is the additive inverse of the polynomial? -7y^2+x^2y-3xy-7x^2

Answers

Answer:

Additive inverse is  (7y² - x²y + 3xy + 7x²).

Step-by-step explanation:

Let the additive inverse of the given polynomial be Y.

Therefore as per definition of additive inverse of any polynomial the addition of a polynomial and additive inverse of any polynomial is always zero.

So Polynomial + additive inverse polynomial = 0

(-7y² + x²y - 3xy - 7x²) + Y = 0

Y = -(-7y² + x²y - 3xy - 7x²) = (7y² - x²y + 3xy + 7x²)

So the additive inverse of the polynomial will be (7y² - x²y + 3xy + 7x²).

Answer:

The answer is A

Step-by-step explanation:

The additive inverse is basically the opposite symbol for the numbers.

So, therefore:

What is the additive inverse of the polynomial?

-7y^2 + x^2y - 3xy - 7x^2

The answer to this would be

7y^2 - x^2y + 3xy + 7x^2

what is the factorization of the trinomial below -x^2+x+42 A. (x+6)(x-7) B. -1(x+7)(x+6)C. -1(x-7)(x+6) D. (-x+6)(x+7)

Answers

Answer:

-(x - 7)(x + 6)

Step-by-step explanation:

Step 1: Factor GCF

-1(x² - x - 42)

Step 2: Factor quadratic

-1(x - 7)(x + 6)

Answer:

C

Step-by-step explanation:

-x²+x+42

=-(x²-x-42)

[7-6=1,7×-6=-42]

=-(x²-(7-6)x-42)

=-(x²-7x+6x-42)

=-[x(x-7)+6(x-7)]

=-(x-7)(x+6)
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