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wel
3 years ago
9

The scientific notation 2 x 10^-2 has what value?

Mathematics
1 answer:
PIT_PIT [208]3 years ago
8 0
The value is 0.02

If it is a negative number, you move the decimal over to the left. :)
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A triangle has side lengths 10, 15, and 7. Is the triangle acute, obtuse, or right? Show your work and explain
Deffense [45]
Right because if you make a triangle like that than you make a right a right angle
3 0
3 years ago
A "child has six blocks, three of which are red and three of which are green". How many patterns can shemake by placing them all
makvit [3.9K]

Answer: There are 20 ways and 1680 ways respectively.

Step-by-step explanation:

Since we have given that

Total number of blocks = 6

Number of red blocks = 3

Number of green blocks = 3

So, Number of patterns she can make by placing them all in a line is given by

\dfrac{6!}{3!\times 3!}\\\\=20

If there are 3 white blocks

so, total number of white blocks becomes 9

So, Number of total pattern she can make by placing all nine blocks in a line is given by

\dfrac{9!}{3!\times 3!\times 3!}\\\\=1680\ ways

Hence, there are 20 ways and 1680 ways respectively.

6 0
3 years ago
Which expression is equivalent to x+0.2x?
GalinKa [24]
The expression equivalent to 0.2x is 0.1x
5 0
3 years ago
Read 2 more answers
A population of bacteria is initially 6000. After three hours the population is 3000. If this rate of decay continues, find the
serious [3.7K]

Answer:

The equation is A=6000e^{-0.23t}  at a rate of -23%.

Step-by-step explanation:

Decay can be represented by the equation A=A_0e^{rt}. We can find the rate at which it decays by using t=3 hours and A=3000. This means A_0=6000 in this context.

A=A_0e^{rt}\\3000=6000e^{r(3)}

0.5=e^{(24.5)r}

After substituting, we divided by 6000 to each side to get 0.5 on the left. Now to solve for r, we will take the natural log of both sides and use log rules to isolate r.

ln 0.5=ln e^{(3)r}\\ln 0.5=3r (ln e)\\\frac{ln0.5}{3} =r

We know lne=1 so we were able to cancel it out and divide both sides by 3.

We solve with a calculator \frac{ln0.5}{3} =r\\-0.23=r

We change -0.23 into a percent by multiplying by 100 to get -23% as the rate.

The equation is A=6000e^{-0.23t}


5 0
3 years ago
There were 94,172 people at a football game, which digit is in the thousand place in this number
Simora [160]

Answer: 4

Step-by-step explanation:

94,172

ten thousands, thousands, hundreds, tens, ones

According to the list of places, 4 is the thousand place in 94,172.

Hope this helps!! :)

Please let me know if you have any question

6 0
3 years ago
Read 2 more answers
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