3 years ago

PLEASE HELP ME, Am given 60 points!! NO CAP

Mathematics

1 answer:

dexar [7]3 years ago

5 0

Simple it is 42^2 if you need a explanation dms me

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The half-life of cesium-137 is 30 years. Suppose we have a

VMariaS [17]

(a) If $y(t)$ is the mass (in mg) remaining after $t$ years, then $y(t) = y(0) e^{kt}=100e^{kt}.$

$y(30) = 100 e^{30k} = \frac{1}{2}(100) \implies e^{30k} = \frac{1}{2} \implies k = -(\ln 2) /30 \implies \\ \\
y(t) = 100e^{-(\ln 2)t/30} = 100 \cdot 2^{-t/30}$

(b) $y(100) = 100 \cdot 2^{-100/30} \approx \text{9.92 mg}$

(c)
$100 e^{- (\ln 2)t/30} = 1\ \implies\ -(\ln 2) t / 30 = \ln \frac{1}{100}\ \implies\ \\ \\
t = -30 \frac{\ln 0.01}{\ln 2} \approx \text{199.3 years}$

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3 years ago

(ANSWER ASAP) Solve the inequality.

Aleksandr [31]

Answer:

-4≤ g

Step-by-step explanation:

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Write and solve an equation to find how any bows she can make with 8 yards of ribbon

Snezhnost [94]

8÷(2/5)=x

x=20

She can make 20 bows I think.

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Nadine has 3 yard of ribbon to wrap birthday party favors if each favor use 1/5 yards of ribbon how many favors can nadine wrap

nata0808 [166]

I think the answer is 15 Hope this helps

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4 years ago

Write the equation y = x - 3+ 10 in slope-intercept form.

n200080 [17]

Answer:y

−

Explanation:

Slope intercept form can be represented as

To get an equation into this form, we should try to get

all alone.

From

we can subtract

from both sides

to get

⇒

−

which is now in slope intercept form :)

Step-by-step explanation:

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3 years ago