All categories

3 years ago

Which graph represents a proportional relationship?

Mathematics

2 answers:

Phoenix [80]3 years ago

7 0

Answer:

Step-by-step explanation:

passes through origin and straight

jarptica [38.1K]3 years ago

4 0

Answer:

The very left one

Step-by-step explanation:

You might be interested in

The core melt- down and explosions at the nuclear reactor in Chernobyl in 1986 released large amounts of strontium-90, which dec

elena-14-01-66 [18.8K]

If $S(t)$ is the amount of strontium-90 present in the area in year $t$ , and it decays at a rate of 2.5% per year, then

$S(t+1)=(1-0.025)S(t)=0.975S(t)$

Let $S(0)=s$ be the starting amount immediately after the nuclear reactor explodes. Then

$S(t+1)=0.975S(t)=0.975^2S(t-1)=0.975^3S(t-2)=\cdots=0.975^{t+1}S(0)$

or simply

$S(t)=0.975^ts$

So that after 50 years, the amount of strontium-90 that remains is approximately

$S(50)=0.975^{50}s\approx0.282s$

or about 28% of the original amount.

We can confirm this another way; recall the exponential decay formula,

$S(t)=se^{kt}$

where $t$ is measured in years. We're told that 2.5% of the starting amount $s$ decays after 1 year, so that

$0.975s=se^k\implies k=\ln0.975$

Then after 50 years, we have

$S(50)=se^{50k}\approx0.282s$

5 0

3 years ago

Reflections DO NOT preserve __________. This means the preimage (original) and the image(new) are NOT FACING the same way.

Sonbull [250]

It c okokokokokokokokokok

5 0

3 years ago

What is the definition for Interquartile Range

Molodets [167]

The answer is C, because to find IQR you have to find the difference (subtract) of the first and third quartile

3 0

3 years ago

Solve this complex fractions: (3/4)/2

strojnjashka [21]

Answer:

your answer is 0.375

Step-by-step explanation:

7 0

3 years ago

Find: AABCD in square units

s2008m [1.1K]

It’s 0.5 xxxxxxxxxxxxxxxxxccc

3 0

3 years ago