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choli [55]
3 years ago
12

Irma needs to buy 8 1/4 feet of packaging tape. There are 2 3/4 feet of tape on each roll. How many rolls of tape should Irma bu

y?
Mathematics
1 answer:
nignag [31]3 years ago
6 0

Answer: 3 rolls of tape

Step-by-step explanation:

1. Make an equation:

2 3/4x=8 1/4; x=number of rolls of tape

2. Divide both sides by 2 3/4 to isolate x:

x=8 1/4 divided by 2 3/4

3. Simplify:

x=3

Have a nice day! :D

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How do i do 3 part a ?
WINSTONCH [101]


In general the binomial expansion is


(a+b)^n = {n \choose 0} a^0 b^n + {n \choose 1} a^1 b^{n-1} + {n \choose 2} a^2 b^{n-2} + ... + {n \choose n} a^n b^0


So in our case, because we want ascending powers of x we'll write,


(-3x + 1)^{11} =  {11 \choose 0} (-3x)^0 1^{11} + {11 \choose 1} (-3x)^{1} 1^{10} + {11 \choose 2} (-3x)^{2} 1^9  + {11 \choose 3 } (-3x)^3 1^8 + ...


We need to calculate the binomial coefficients:


{11 \choose 0}  = 1


{11 \choose 1}  = 11


{11 \choose 2}  = \dfrac{11 \times 10}{2} = 55


{11 \choose 3}  = \dfrac{11 \times 10 \times 9}{3 \times 2} = 165


(-3x+1)^{11} =  1 (-3x)^0 1^{11}  + 11(-3x)^{1} 1^{10}  + 55 (-3x)^2 1^{9}  + 165 (-3x)^3 1^8 + ...


(1-3x)^{11} =  1 -33 x + 495 3x^2 - 4455 x^3+ ...



6 0
3 years ago
PLZ HLP! You survey 72 randomly chosen students about whether they are going to attend the school play. Twelve say yes. Predict
marshall27 [118]

Answer: 35!

Step-by-step explanation: Good luck! I love your profile picture too haha

8 0
3 years ago
estamos construyendo una carretera que enlace los puntos a = 12 ,21 y b =(17,23) otro punto se encuentra en c =(3,9) es posible
Nadusha1986 [10]

Answer:

is not possible

Step-by-step explanation:

<u><em>The question in English is</em></u>

we are building a road that links the points a = (12 ,21) and b =(17,23) another point is in c =(3,9) it is possible that a single road allows to join these three points?

we know that

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

step 1

Find the slope ab

we have

a = (12 ,21) and b =(17,23)

substitute

m=\frac{23-21}{17-12}

m=\frac{2}{5}

step 2

Find the slope ac

we have

a = (12 ,21) and c =(3,9)

substitute

m=\frac{9-21}{3-12}

m=\frac{-12}{-9}

simplify

m=\frac{4}{3}

step 3

Compare slopes ab and ac

The slopes are different

That means ----> is not possible that a single road allows to join these three points

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3 years ago
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Answer:

Choose B.....................

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Which of the following is not a common procedure leading to foodborne illness:
Ymorist [56]

C overcooked foods will not

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