Ask question

Ask question

All categories

3 years ago

11

Roger’s office building has a $320,000 value, a 2 rating, and a B building classification. The contents in the building are valu

ed at $105,000. Calculate his total annual premium.

1 answer:

Virty [35]3 years ago

7 0

Answer:

2,230

Step-by-step explanation:

You might be interested in

Two train leave stations 210 miles apart at the same time and travel toward each other. One train travels at 80 miles per hour w

Brrunno [24]

SOLUTION

At the same time t,

Train 1 would have covered a distance of 80t, since distance = average speed x time.

Train 2 would have covered a distance of 70t.

Now both added should give 210 miles

That is 80t + 70t = 210

150t = 210

t = 210/150

t = 1.4 hours

3 0

1 year ago

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

Simplify (-8-1/2X + 2-1/2) + (-2-2/5x-5-2/3)

Citrus2011 [14]

The answer to this problem is =<span><span><span><span>−9/</span>10</span>x</span>+<span><span>−85/</span><span>6</span></span></span>

8 0

3 years ago

Find the total cost, including tax, of the following items:

frez [133]

Answer:

$10.23

Step-by-step explanation:

$2.19+$1.39+$3.69+$2.29=9.56

9.56 x 1.07=10.2292

You round to the nearest tenths place

$10.23

7 0

3 years ago

What would the equation be for finding out which skate board ramp is taller?

jeka94

Draw triangles within the ramps and since they are right triangles, use the pythagorean theorem based on what was given and solve

5 0

3 years ago