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mariarad [96]
3 years ago
10

Someone help me plz I need some help I’m gonna fail

Mathematics
1 answer:
irina [24]3 years ago
3 0
They should both be A :)
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Michael bought a shirt with 2/5 of his money. Then he bought a jacket that cost $5 more than the shirt. He spent $105 altogether
TEA [102]

Answer:

vb hyjv bnhyn g

Step-by-step explanation:

8 0
3 years ago
Show (0.004)(3.42) as a fraction multiplication problem and explain why the answer is in the hundredths-thousandths (five decima
Musya8 [376]
4/1000 x 3 42/100 = 4/1000 x 3 420/1000 = 3 1680/1000 = 4 680/1000
7 0
3 years ago
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The archway of the Gateway Arch shown on the Missouri quarter is 630 feet OR 7560 inches. Find out how many 4 inch stacks of qua
Rzqust [24]

Answer:

To do this you want to divide 7560 by 4.  This leaves you with 1845.  Therefore, you need 1845 4-inch stacks to build that high.  You are not done though.  You need to multiply 1845 by 58. This gives you 107,010.  It would take 107,010 quarters to get to the top.

Step-by-step explanation:

6 0
3 years ago
Explain what the following statement means: Polynomials are closed under the operations of addition and subtraction. Provide one
kirza4 [7]
1. Polynomials are closed under the operations of addition and substraction mean that:

If we add two polynomials, the result is still a polynomial (so still in the set of polynomials)

Also, If we subtract 2 polynomials, the result is a polynomial.

2. Example: given the polynomials :

M(x)= 3x^{2}+5x-1 and N(x)=-6 x^{4}+9 x^{3}+ x^{2} -2x-1

Addition example: 

M(x)+N(x)=(3x^{2}+5x-1)+(-6 x^{4}+9 x^{3}+ x^{2} -2x-1)=

-6 x^{4}+9 x^{3}+x^{2} +3x^{2}-2x+5x-1-1=-6 x^{4}+9 x^{3}+4x^{2}x-2


Subtraction example: 

N(x)-M(x)=(-6 x^{4}+9 x^{3}+ x^{2} -2x-1)-(3x^{2}+5x-1)

=-6 x^{4}+9 x^{3}+ x^{2} -2x-1-3x^{2}-5x+1=
=-6 x^{4}+9 x^{3}+ x^{2} -3x^{2}-2x-5x-1+1=-6 x^{4}+9 x^{3}-2x^{2}-x

So both M(x)+N(x) and N(x)-M(x) are polynomials
7 0
3 years ago
Read 2 more answers
Match the pairs of polynomials to their products. (xy + 9y + 2) and (xy – 3) x2y2 + 3x2y – 7xy – 27x – 18 (2xy + x + y) and (3xy
zlopas [31]

Answer:

Step-by-step explanation:

1) (xy+ 9y + 2) and (xy – 3)

Each term of second expression will be multiplied by first bracket.

xy(xy+9y+2) -3(xy+9y+2)

x²y²+9xy²+2xy-3xy-27y-6

x²y²+9xy²-xy-27y-6

2) (2xy + x + y) and (3xy2 – y)

3xy²(2xy+x+y) -y(2xy+x+y)

6x²y³+3x²y²+3xy³-2xy²-xy-y²

6x²y³ – 2xy² + 3x²y² – xy + 3xy³ – y²

3)  (x – y) and (x + 3y)

x(x-y) +3y(x-y)

x²-xy+3xy-3y²

x²+2xy-3y²

4) (xy + 3x + 2) and (xy – 9)

xy(xy + 3x + 2) -9(xy + 3x + 2)

x²y²+3x²y+2xy-9xy-27x-18

x²y²+3x²y-7xy-27x-18

5) (x2 + 3xy – 2) and (xy + 3)

xy(x2 + 3xy – 2) +3(x2 + 3xy – 2)

x³y+3x²y²-2xy+3x²+9xy-6

x³y+3x²+3x²y²+7xy-6

6) (x + 3y) and (x – 3y)

x(x + 3y) -3y(x + 3y)

x²+3xy-3xy-9y²

x²-9y² ....

6 0
4 years ago
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