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AleksAgata [21]

3 years ago

14

The width of a grain of sugar is 0.7 millimeter. What will be the width of the grain of sugar in centimeters under magnification

?(A microscope has a scale of 250:1.) ____centimeters

1 answer:

grin007 [14]3 years ago

3 0

Answer:

2.36 justa answer to talk more

Step-by-step explanation:

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Given the equation 2 square root x-5=2 solve for x and identify if it is an extraneous solution

umka2103 [35]

<span>2√(x-5) = 2
</span><span>√(x-5) = 1
</span>x-5 = 1
x=6(I don't know what extraneous solution means though)

7 0

2 years ago

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The manager wants to advertise that anybody who isn't served within a certain number of minutes gets a free hamburger. But she d

aksik [14]

Answer:

The number of minutes advertisement should use is found.

x ≅ 12 mins

Step-by-step explanation:

(MISSING PART OF THE QUESTION: AVERAGE WAITING TIME = 2.5 MINUTES)

<h3 /><h3>Step 1</h3>

For such problems, we can use probability density function, in which probability is found out by taking integral of a function across an interval.

Probability Density Function is given by:

$f(t)=\left \{ {{0 ,\-t$

Consider the second function:

$f(t)=\frac{e^{-t/\mu}}{\mu}\\$

Where Average waiting time = μ = 2.5

The function f(t) becomes

$f(t)=0.4e^{-0.4t}$

<h3>Step 2</h3>

The manager wants to give free hamburgers to only 1% of her costumers, which means that probability of a costumer getting a free hamburger is 0.01

The probability that a costumer has to wait for more than x minutes is:

$\int\limits^\infty_x {f(t)} \, dt= \int\limits^\infty_x {}0.4e^{-0.4t}dt$

which is equal to 0.01

<h3>Step 3</h3>

Solve the equation for x

$\int\limits^{\infty}_x {0.4e^{-0.4t}} \, dt =0.01\\\\\frac{0.4e^{-0.4t}}{-0.4}=0.01\\\\-e^{-0.4t} |^\infty_x =0.01\\\\e^{-0.4x}=0.01$

Take natural log on both sides

$ln (e^{-0.4x})=ln(0.01)\\-0.4x=ln(0.01)\\-0.4x=-4.61\\x= 11.53$

<h3>Results</h3>

The costumer has to wait x = 11.53 mins ≅ 12 mins to get a free hamburger

3 0

2 years ago

Explain on the next slide how in 3 hours the car wouldn't travel 160 miles.

rosijanka [135]

Answer:

the car would have to be going under 5mph

Step-by-step explanation:

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2 years ago

In figure qr = 1/3pr. find pq

BaLLatris [955]

Answer:

PQ = 3.2

Step-by-step explanation:

$QR =\frac{1}{3} PR$

$QR =\frac{1}{3} \times 4.8$

$QR =1.6$

PQ = PR - QR

PQ = 4.8 - 1.6

PQ = 3.2

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3 years ago

A coin is tossed. If heads appears, a spinner that can land on any number from 1 to 3 is spun. If tails appears, a second coin i

Advocard [28]

Answer:

H1 H2 H3 TH TT

Step-by-step explanation:

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2 years ago

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