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Arlecino [84]
3 years ago
13

A line plot shows the length of candy bars that Timothy got for his birthday. His grandmother

Mathematics
1 answer:
Valentin [98]3 years ago
6 0

Answer:

23

Step-by-step explanation:

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. Jessica went to the grocery store and purchased a box of cereal for $3.75, milk for $1.50, and bread for $2.25. She paid with
puteri [66]
$3.75 - cereal
$1.50 - milk
$2.25 - bread
—————————
$7.50

$20.00
- 7.50
—————
$ 12.50


She received $12.50 back
4 0
3 years ago
Complete the Square:<br> 5x^2+16x-40=8<br> (please show your steps)
Sav [38]

Answer:

Step-by-step explanation:

divide through by the coefficient of x^{2}

\frac{5x^{2} }{5} + \frac{16x}{5}  + \frac{-40}{5} = \frac{8}{5}

x^{2} +\frac{16}{5}x  -8 =\frac{8}{5}

x^{2} +\frac{16}{5} x = \frac{8}{5}  +8

x^{2} + \frac{16}{5}  x =\frac{48}{5}

Add half of the square of the coefficient of x  to both sides (\frac{1}{2}  X \frac{16}{5} ) ^{2}

x^{2}  + \frac{16}{5}x + (\frac{1}{2}  X \frac{16}{5} )^{2} = \frac{48}{5} +(\frac{1}{2} X \frac{16}{5} )^{2}

x^{2}  +\frac{16}{5} x +(\frac{16}{10}) ^{2} =\frac{48}{5} +\frac{64}{25}

(x +\frac{16}{10})^{2}    =\frac{304}{25}

x +\frac{16}{10} =±\sqrt{\frac{304}{25} }

x = -\frac{16}{10} ± \sqrt{\frac{304}{25} }

x=-\frac{16}{10}  + \sqrt{\frac{304}{25} } or-\frac{16}{10}  - \sqrt{\frac{304}{25} }

x = 1.89 or -5.09

5 0
3 years ago
Simplify -10•2/(4)+8•5
Setler [38]

Answer:

its 11.05

Step-by-step explanation:

10.2 \div 4 + 8.5

these are the steps.....u can use a calculator to solve this sum easy...hope that my answer is helpful to u

8 0
4 years ago
It was reported that 23% of U.S. adult cellphone owners called a friend for advice about a purchase while in a store. If a sampl
leva [86]

Answer:

P(X=7)

And using the probability mass function we got:

P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271  

Step-by-step explanation:

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n=15, p=0.23)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

And we want to find the following probability:

P(X=7)

And using the probability mass function we got:

P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271  

5 0
3 years ago
Please Help!, Brainliest to whoever helps
Tanya [424]
B for sure!!!!!!!!!!!!!!!!!!!
6 0
3 years ago
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