Please help me right away! will give brainliest

Mathematics

1 answer:

Anon25 [30]3 years ago

4 0

The table represents a greater unit rate of change.

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How much wood could a woodpecker peck if a woodpecker could peck wood? (this is a legitimate question on my homework)

Nimfa-mama [501]

A woodpecker can chuck wood

8 0

2 years ago

What fraction is equivalent to 0.002?

kherson [118]

Since 0.002 Is in the thousandths place on the right, It would be 2/1000.

So your answer would be in fratcion form:
2/1000

Word Form:
Two one-thousandths

Hope I helped ya! ^-^

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2 years ago

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Please help! I am confused

Levart [38]

I would say the 60 + 20 represents how the shirts cost the same amount. Then I would say the x either represents the cost before tax or how to find the cost of the shirts.

I hope this helps!
Good Luck!

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2 years ago

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You have two parents, four grandparents, eight greatgrandparents, and so forth.

Leviafan [203]

A.
In the first generation we have 2 ancestors.
In the second generation we have 4 ancestors or $2^{2}$ ancestors.
In the third generation we have 8 ancestors ot $2^{3}$ ancestors.

We can see that each succesive generation has two times more members. The sum is:
$2+4+8+16+...+ 2^{40}$

To calculate number of ancestors we can use formula for the sum of a geometric sequence. Geometric sequence is sequence of numbers that differ by a certain factor. This factor is called ratio. Formula is:
 $S= a_{1} * \frac{1- r^{n} }{1-r}$
Where:
S -> sum
a1 -> first member of a sequence
r -> ratio
n -> number of elements

For this question:
a1 = 2
r = 2
n = 40
 $S= 2* \frac{1- 2^{40} }{1-2} =2 199 023 255 550$

b.
1 generation = 25 years
40 generations = 40 * 25 = 1000 years

c.
Total number of people who have ever lived = $10^{10}$
Number of ancestors in 40 generations = $2.2*10^{12}$

The number of ancestors is greater than total number of people who have ever lived. This means that not all ancestors were distinct and that in each generation both men and women had children with more than one partner.

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2 years ago

Simplify y^-3 a.3/y b.1/y^3 c.-3y d.-1/y^3

nignag [31]

Answer:

b. $\frac{1}{y^3}$