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3 years ago

Please help me find the slope!!

Mathematics

2 answers:

yulyashka [42]3 years ago

6 0

Answer:

(4/3)

Step-by-step explanation:

up four, right three

svetoff [14.1K]3 years ago

6 0

Answer: m = 4/3

Steps: m = -1 - 3 ÷ 1 - 4

m = 4/3

Plz mark brainliest:)

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2 years ago

You have 2000 grams of substance A which has decay constant 0.03, and you have 3000 grams of substance B, which has decay consta

joja [24]

Answer:

If you have a quantity X of a substance, with a decay constant r, then the equation that tells you the amount of substance that you have, at a time t, is:

C(t) = X*e^(-r*t)

Now, we know that:

We have 2000g of substance A, and it has a decay constant of 0.03 (i assume that is in 1/year because the question asks in years)

And we have 3000 grams of substance B, with a decay constant of 0.05.

Then the equations for both of them will be:

Ca = 2000g*e^(-0.03*t)

Cb = 3000g*e^(-0.05*t)

Where t is in years.

We want to find the value of t such that Ca = Cb.

So we need to solve:

2000g*e^(-0.03*t) = 3000g*e^(-0.05*t)

e^(-0.03*t) = (3/2)e^(-0.05*t)

e^(-0.03*t)/e^(-0.05*t) = 3/2

e^(t*(0.05 - 0.03)) = 3/2

e^(t*0.02) = 3/2

Now we can apply Ln(x) to both sides, and get:

Ln(e^(t*0.02)) = Ln(3/2)

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3 years ago

6. 108 is how many times as large as 2. 103?

Dimas [21]

Answer:

54 times larger than 2

Step-by-step explanation:

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4 years ago

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How do I solve this STATS question?

k0ka [10]

We have the following data:

Margin of Error = E = 2.7 % = 0.027
Sample size = n = 900
Proportion of adults in favor = p = 60% = 0.6

We need to find the confidence level. For this first we need to find the z value.

The margin of error for a population proportion is given as:

$E=z* \sqrt{ \frac{p(1-p)}{n} }$

Using the values, we get:

$0.027=z* \sqrt{ \frac{0.6*0.4}{900} } \\ \\ 
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3 years ago