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# Lillian sold muffins at 4 pieces for 20php how much did she earn for selling 60 muffins if she spent 136php in making them php means peso kindly show your solution

• Réponse publiée par: kuanjunjunkuan

164php

Step-by-step explanation:

4÷60=15

15x20=300

300-136=164

i divided 4 by 60 to know the number of sets of pieces that she sold

after getting the answer i multiplied it by 20 to know the how much money she got

then i subtracted my product to the amount of money she spent

• Réponse publiée par: 09330399672

subtracting polynomials is quite similar to adding polynomials, but there are those pesky "minus" signs to deal with. if the subtraction is being done horizontally, then the "minus" signs will need to be taken carefully through the parentheses. if the subtraction is done vertically, then all that's needed is flipping all of the subtracted polynomial's signs to their opposites.

step-by-step explanation:

simplify (x3 +   3x2 + 5x – 4) –   (3x3 – 8x2 – 5x + 6)

the first thing i have to do is take that "minus" sign through the parentheses containing the second polynomial. some students find it helpful to put a "1" in front of the parentheses, to help them keep track of the minus sign.

here's what the subtraction looks like, when working horizontally:

(x3 + 3x2 + 5x – 4) – (3x3 – 8x2 – 5x + 6)

(x3 + 3x2 + 5x – 4) – 1(3x3 – 8x2 – 5x + 6)

(x3 + 3x2 + 5x – 4) – 1(3x3) – 1 (–8x2) – 1(–5x) – 1(6)

x3 + 3x2 + 5x – 4 – 3x3 + 8x2 + 5x – 6

x3 – 3x3 + 3x2 + 8x2 + 5x + 5x – 4 – 6

–2x3 + 11x2 + 10x –10

and here's what the subtraction looks like, when going vertically:

\small{ \begin{array}{}x^3& +3x^2& +5x& -4\\-(3x^3& -8x^2& -5x& +6)\\ \hline\end{array} }

x

3

−(3x

3

​

+3x

2

−8x

2

​

+5x

−5x

​

−4

+6)

​

​

in the horizontal addition (above), you may have noticed that running the negative through the parentheses changed the sign on each and every term inside those parentheses. the shortcut when working vertically is to not bother writing in the subtaction sign or the parentheses; instead, write the second polynomial in the second row, and then just flip all the signs in that row, "plus" to "minus" and "minus" to "plus".

i'll change all the signs in the second row (shown in red below), and add down:

\small{ \begin{array}{}x^3& +3x^2& +5x& -4\\ \textcolor{red}{\textbf{--}}\,3x^3& \textcolor{red}{\textbf{+}}\,8x^2& \textcolor{red}{\textbf{+}}\,5x& \textcolor{red}{\textbf{--}}\,6\\ \hline -2x^3& +11x^2& +10x& -10\end{array} }

x

3

–3x

3

−2x

3

​

+3x

2

+8x

2

+11x

2

​

+5x

+5x

+10x

​

−4

–6

−10

​

​

either way, i get the answer:

–2x3 + 11x2 + 10x – 10

• Réponse publiée par: reyquicoy4321
9a)45*5 because √225 is 15and 45*5=225 so 5 is the answer
9b)125*5because√625is 25 and 125*5 =625 so 5 is the answer
9c)468*13 because √6084is 78 and 468*13=6084 so 13 is the answer
9d)1372*7 because √9604 is 98 and 1372*7=9604 so 7 is the answer

10a)27/45=60%
n=60%
10b).30*129=36
n=36
10c)200/.40=500
n=500
10d)105/.15=700
n=700
11a)i dont know
11b)8(-1,-2,-3,-4,-6,-8,-12,-24)
11c)2668
11d)2210
11e)35 chickens remain
3500 pesos
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Lillian sold muffins at 4 pieces for 20php how much did she earn for selling 60 muffins if she spen...