2 years ago

I can’t figure this out

Mathematics

1 answer:

Reil [10]2 years ago

3 0

Answer: 2.2= 11/5 or 1 1/5

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4.5/5.5 simplified ? thanks!

Scrat [10]

Answer:

Step-by-step explanation:

You can multiply the numerator and denominator by 2

(4.5/5.5)(2/2)=9/11

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3 years ago

How many solutions does an equation have when you isolate the variable and it equals a constant

Olin [163]

There is only one solution since x=0 x cant be many things since the only thing that would make this true is 0

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2 years ago

Use the slope formula to determine the equation of the line (2,.75) and (4,.25)

guajiro [1.7K]

Answer:

y=-0.25x+1.25

Step-by-step explanation:

hope this helps u

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2 years ago

Dinosaur fossils are often dated by using an element other than carbon, like potassium-40, that has a longer half life (in this

Firlakuza [10]

The amount of substance left of a radioactive element of half life, $t_{\frac{1}{2}}$ after a time, t, is given by:

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

Given that <span>potassium-40 has a half life of approximately 1.25 billion years.

The number of years it will take for 0.1% of potassium-40 to remain is obtained as follows:

$0.1=100\left( \frac{1}{2} \right)^ \frac{t}{1.25}} \\ \\ \Rightarrow\left( \frac{1}{2} \right)^ \frac{t}{1.25}}=0.001 \\ \\ \Rightarrow\frac{t}{1.25}\ln\left( \frac{1}{2} \right)=\ln(0.001) \\ \\ \Rightarrow \frac{t}{1.25}= \frac{\ln(0.001)}{\ln\left( \frac{1}{2} \right)} =9.966 \\ \\ t=9.966(1.25)=12.5$

Therefore, </span><span>the maximum age of a fossil that we could date using 40k is 12.5 billion years.</span>

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3 years ago

Write the ratio of the number of squares to the number of circles.

julia-pushkina [17]

Answer:

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2 years ago

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