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Juliette [100K]

3 years ago

10

Chrissy bought plates for $7.29 and napkins for $2.74 for her party. Round each number to the nearest dollar. About how much cha

nge did Chrissy get from $20? A. about $5 B. about $9 C. about $10 D. about $11

2 answers:

Montano1993 [528]3 years ago

8 0

C. Is the correct answer

topjm [15]3 years ago

3 0

The answer is C about $10

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What is the following quotient?

Olegator [25]

Answer:

B.) StartFraction 5 StartRoot 11 EndRoot + 5 StartRoot 3 EndRoot Over 8 EndFraction

Step-by-step explanation:

edge 2020

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3 years ago

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Hey, I've been extremely confused with problems like :7x²-12x-4

bonufazy [111]

Factor by grouping.

(7x+2)(x-2) I think not sure

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3 years ago

It is estimated that there are 828 motor vehicles in the US it is estimated that there are 828 Motor vehicles in the US for ever

coldgirl [10]

Answer:

314 million

Step-by-step explanation:

Given that :

Number of motor vehicle in the U.S for every 1000 people = 828

If the number of motor vehicle in the United States = 260 million

Then,

Let x = number of people Given number of vehicles = 260,000,000

1000 people = 828 vehicles

x = 260,000,000

828x = (260,000,000 * 1000)

828x = 260,000,000,000

x = 314009661. 835

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3 years ago

A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t)=(t)ln(5t). Find the acceleration of the par

lyudmila [28]

Answer:

$a(\frac{1}{5e})=5e$

Step-by-step explanation:

we are given equation for position function as

$s(t)=tln(5t)$

Since, we have to find acceleration

For finding acceleration , we will find second derivative

$s'(t)=\frac{d}{dt}\left(t\ln \left(5t\right)\right)$

$=\frac{d}{dt}\left(t\right)\ln \left(5t\right)+\frac{d}{dt}\left(\ln \left(5t\right)\right)t$

$=1\cdot \ln \left(5t\right)+\frac{1}{t}t$

$s'(t)=\ln \left(5t\right)+1$

now, we can find derivative again

$s''(t)=\frac{d}{dt}\left(\ln \left(5t\right)+1\right)$

$=\frac{d}{dt}\left(\ln \left(5t\right)\right)+\frac{d}{dt}\left(1\right)$

$=\frac{1}{t}+0$

$a(t)=\frac{1}{t}$

Firstly, we will set velocity =0

and then we can solve for t

$v(t)=s'(t)=\ln \left(5t\right)+1=0$

we get

$t=\frac{1}{5e}$

now, we can plug that into acceleration

and we get

$a(\frac{1}{5e})=\frac{1}{\frac{1}{5e}}$

$a(\frac{1}{5e})=5e$

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3 years ago

Given sets A, B, C, and U, find the elements in A - B'.

SpyIntel [72]

Step-by-step explanation:

note A- b = A n B

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( A n B )' = ( 0,1,2,5,6,7)

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3 years ago