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3 years ago

About what percent is oxygen than silicon on the earths crust

Mathematics

1 answer:

Verizon [17]3 years ago

8 0

It's 25 percent.............

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M divided by 19 = -2 (Find m)

seropon [69]

M=38 I hope it helps
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3 years ago

What is the area of the rectangle? [1] un2

mezya [45]

(-2,3) to (2,-3)

6^2 + 4^2 = c^2

c = 7.21

————

(-2,3) to (1,5)

2^2 + 3^2 = c^2

c = 3.61

————

3.61 * 7.21 = approx. 26.03

The area is 26.03un^2

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3 years ago

The population of bacteria in a petri dish doubles every 24 h. The population of the bacteria is initially 500 organisms. How lo

liberstina [14]

Answer:

16.34 hours

Step-by-step explanation:

According to the given information we can see that the case is of exponential growth

Hence, we will use the formula

$A=P(2)^\frac{t}{24}$

Here A =800 is the amount that is needed to reach

P is the initial amount that is 500

We have to find the time it will take to reach 800 that is we need to find t

On substituting the values in the formula we get

$800=500(2)^\frac{t}{24}$

On simplification we get

$\Rightarrow\frac{8}{5}=(2)^\frac{t}{24}$

Taking log on both sides we get

$\Rightarrow\log\frac{8}{5}=\log(2)^\frac{t}{24}$

using $\log\frac{m}{n}=\log m-\log n$

And $\log a^m=m\log a$

$\Rightarrow\log{8}-\log{5}=\frac{t}{24}\log2$

Now substituting values of log 8=0.903, log 5=0.698 and log 2=0.301 we get

$\Rightarrow 0.903-0.698=\frac{t}{24}0.301$

$\Rightarrow 0.205=\frac{t}{24}0.301$

$\Rightarrow \frac{0.205}{0.301}\cdot 24=t$

$\Rightarrow t=16.34$

8 0

3 years ago

Read 2 more answers

Pls help I dont get it 30 POINTS

yKpoI14uk [10]

Answer:

zero

Step-by-step explanation:

since there is no number less than 1 on the spinner, the probability of getting number less than one is zero.

5 0

2 years ago

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To determine whether 30 horses can be put into 7 stalls; so that in every stall there may be, either a single horse, or an odd n

algol [13]

Answer: No solutions

If i put any combo of horses of single or odd, always an even number at last stall.

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3 years ago