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3 years ago

What's the slope of the line shown in the picture?

Mathematics

2 answers:

faust18 [17]3 years ago

6 0

The slope is negative 2

Black_prince [1.1K]3 years ago

6 0

The slope is -2 b/c it goes through on the right and if it does it a good sign its negative.

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Please help me!!<br> 2(5 – x)^4/3 -11 =151

larisa [96]

Answer:

$-\frac{\left(-x+5\right)^4}{4}\\$

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4 years ago

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2.5 x .27 in area model

dem82 [27]

Answer:

2.5 x 0.27 =

0.675

hope dis helps ^-^

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3 years ago

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John has $220 in his account and adds $25 to it each month. Cheryl has $100 in her account and adds $35 each month to her accoun

Morgarella [4.7K]

Answer:

$695

Step-by-step explanation:

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3 years ago

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Assume you have such a watch. if a minimum of 18.0% of the original tritium is needed to read the dial in dark places, for how m

laila [671]

Given that the half life of 3H is 12.3 years.

The amount of substance left of a radioactive substance with half life of $t_{ \frac{1}{2} }$ after t years is given by

$N(t)=N_0\left(\frac{1}{2} \right)^{ \frac{t}{t_{\frac{1}{2}} }$

Therefore, the number of years it will take for 18% of the original tritinum to remain is given by

$18 \% = 100 \% \left(\frac{1}{2} \right)^{ \frac{t}{12.3}} \\ \\ \Rightarrow\left(\frac{1}{2} \right)^{ \frac{t}{12.3}} =0.18 \\ \\ \Rightarrow\frac{t}{12.3}\ln\left(\frac{1}{2} \right)=\ln0.18 \\ \\ \Rightarrow\frac{t}{12.3}= \frac{\ln0.18}{\ln\left(\frac{1}{2} \right)} = \frac{-1.715}{-0.6931} =2.474\\ \\ \Rightarrow t=2.474(12.3)=30.4$

Therefore, the number of <span>years that the time could be read at night is 30.4 years.</span>

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3 years ago

Radio waves travel at the speed of light, approximately 300,000,000 m/s. Part A How much time does it take for a radio message t

jenyasd209 [6]

Answer:

Step-by-step explanation:

First you want to understand that every time a radio wave goes 300,000,000 meters a second passes, literally what meter per second means. of course it doesn't go that far, it goes 384,000 one way and then the same distance back, which makes 768,000. Under a third of the distance to make 1 second, so it will be less than one second.

You also want to understand the formula for speed. speed = distance / time. Whch also means, to find time you can change it to be time = distance / speed. And hey, we have distance and speed. 768,000 / 300,000,000 = .00256, I'll leave the significant figures to you unless you need help with them. but that's .00256 of a second. or .00256 s

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3 years ago

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