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Elenna [48]
3 years ago
9

On earth, a kilogram is equivalent to 2.2 pounds. [True] or [False]

Mathematics
2 answers:
aleksley [76]3 years ago
5 0

Answer:

false

Step-by-step explanation:

because I say

Bond [772]3 years ago
3 0
False one pound is equal to less than one kilo
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A plastic sun visor allows light to pass through but reduces the intensity of the light. the intensity is reduced by 5% if the p
irinina [24]

Answer: The equation is f(x) = 0.95^{x};

The piece of plastic has to have 10mm of thickness.

Step-by-step explanation: It is known that with 1 mm of thickness, 5% of the intensity is reduced. So, 95% of the light is transmitted.

For each milimetre added, "more" 95% of light is transmitted.

For example, if another milimetre of plastic is added, another 0.95 of light is transmitted:

0.95.0.95 = 0.9025 of light reach the visor

So, the model that relate thickness of plastic and intensity of light is:

f(x) = 0.95^{x}

in which:

f(x) is the intensity of light;

x is thickness in mm;

Using the equation, the thickness necessary to reduce intensity to 60% is:

f(x) = 0.95^{x}

0.6 = 0.95^{x}

log 0.6 = log 0.95^{x}

x. log (0.95) = log (0.6)

x = \frac{log 0.6}{log 0.95}

x = 9.95

x ≈ 10

The thickness necessary to reduce intensity of light to 60% is 10mm.

6 0
3 years ago
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the temperature at sunrise was -2° F. The temperature at sunset was 18° F warmer than it was at sunrise. What was the temperatur
Black_prince [1.1K]
Answer: 16 degrees
explanation: 18 + -2 = 16
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3 years ago
Which expression is equivalent to (144k^2r^14)1/2 for all positive values of k and r?
FrozenT [24]

Answer: B

Step-by-step explanation:

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3 years ago
a patients dose of medication increased from 100mg to 150mg. What is the percent increase in medication?
lord [1]

Answer:

The answer is 50% increase. Hope this helped!

Step-by-step explanation:

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A group of 72 children completed a survey on what kind of sport they like. The choices were: Chess, Swimming, and Football. Ever
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Answer:

19/72

Step-by-step explanation:

To calculate the probability that a randomly-chosen child from this group likes either Chess or Swimming but not Football?

We already know the number that liked chess only which is 10, we have to solve for those that liked swimming only which is

8+7+16+x = 40

x which represent swimming only is

40-31 = 9

Thus probability = 10/72 + 9/72 = 19/72

3 0
3 years ago
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