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Tanya [424]
4 years ago
9

Round each number to the nearest tenth.

Mathematics
2 answers:
cupoosta [38]4 years ago
3 0
B,
the exact answer is 84.96, so most likely rounded,

RULES:
5 or above, shove it up.
4 or below, leave it.

9 is higher than 5, obviously.

So, B is the answer.

~MisterMistyEyed
kobusy [5.1K]4 years ago
3 0
382.24-297.28= 84.96
Answer: B 85
To round a number it must be 5 or higher so since the nine in .9 is higher than five it raises the number to 85. And there are no numbers after that. That is the rule so it goes for any other ones too like, 100th or 1000th.
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A television newscaster from a 24-hour news station wants to estimate the number of hours per day its viewers watch
topjm [15]

Answer:

This isn't the best worded question but from what I understand a larger sample size decreases the margin of error. If he would like a more accurate answer a larger sample size of the viewers will give more accurate answers.

Step-by-step explanation:

4 0
3 years ago
A notebook costs $4.50 plus sales tax . After sales tax , the notebook is $4.86. What is the sales tax rate?
UkoKoshka [18]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
A street light is at the top of a 25 ft pole. A 4 ft tall girl walks along a straight path away from the pole with a speed of 6
Burka [1]

Answer:

Tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

Step-by-step explanation:

Given : In the figure attached, Length of girl EC = 4 ft

           Length of street light AB = 25 ft

           Girl is moving away from the light with a speed = 6 ft per sec.

To Find : Rate (\frac{dw}{dt}) of the tip (D) of the girl's shadow (BD) moving away from th

light.

Solution : Let the distance of the girl from the street light is = x feet

Length of the shadow CD is = y feet

Therefore, \frac{dx}{dt}=6 feet per sec. [Given]

In the figure attached, ΔAFE and ΔADE are similar.

By the property of similar triangles,

\frac{x}{21}=\frac{x+y}{25}

25x = 21(x + y)

25x = 21x + 21y

25x - 21x = 21y

4x = 21y

y = \frac{4x}{21}

Now we take the derivative on both the sides,

\frac{dy}{dt}=\frac{4}{21}\times \frac{dx}{dt}

= \frac{4}{21}\times 6

= \frac{8}{7}

≈ 1.14 ft per sec.

Since w = x + y

Therefore, \frac{dw}{dt}= \frac{dx}{dt}+\frac{dy}{dt}

\frac{dw}{dt}=6+1.14

= 7.14 ft per sec.

Therefore, tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

3 0
3 years ago
3.which lines are parallel<br> 4. what wouldbyou use to prove these lines parallel
uysha [10]
3)the line G & H are parallel
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6 0
3 years ago
Can someone help fill in 5 blanks
Yuri [45]
3: -27
4: 81
5: -243
All you need to do is plug in the numbers into the exponent spot.
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3 years ago
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