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3 years ago

Is 2/5 less than 1/2

2 answers:

3 0

Yes, by .10.
Hope it helps!
American photographer Edward Steichen purchased the sculpture Bird in Space while in Paris, France. What occurred when he tried to turn to the United States with the sculpture?

BigorU [14]3 years ago

3 0

It helps to find a common denominator:
2/5 x 2/2 = 4/10
1/2 x 5/5 = 5/10

2/5 = 4/10
1/2 = 5/10

From this, we can see that 2/5 is less than 1/2.

2/5 < 1/2

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On a standardized exam, the scores are normally distributed with a mean of 300 land a standard deviation of 20. Find the z-score

Liula [17]

Answer:

82?

Step-by-step explanation:

6 0

3 years ago

Taye recruits two people to be election campaign volunteers. The next week he ask each of those volunteers to recruit two more c

jeka94

Using a geometric sequence, it is found that:

a) For the first 5 weeks, the numbers are: 2, 4, 8, 16, 32

b) Hence some of the volunteers can stop recruiting new volunteers during the 7th week.

<h3>What is a geometric sequence?</h3>

A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.

The nth term of a geometric sequence is given by:

$a_n = a_1q^{n-1}$

In which $a_1$ is the first term.

For this problem, on the first week there are 2 people, and since each new people involve two more, the common ratio is of 2, hence the parameters for the geometric sequence are:

$a_1 = 2, q = 2$

Hence the number of people after n weeks is:

$a_n = 2 \times 2^{n - 1}$

For the first 5 weeks, the numbers are:

$a_1 = 2 \times 2^{1 - 1} = 2$

$a_2 = 2 \times 2^{2 - 1} = 4$

$a_3 = 2 \times 2^{3 - 1} = 8$

$a_4 = 2 \times 2^{4 - 1} = 16$

$a_5 = 2 \times 2^{5 - 1} = 32$

There will be 150 volunteers when $a_n = 150$ , hence:

$2 \times 2^{n - 1} = 150$

$2^{n-1} = 75$

$\frac{2^n}{2} = 75$

$2^n = 150$

$n = 7...$

The above is because 2^7 = 128 and 2^8 = 256, and 128 < 150 < 256.

Hence some of the volunteers can stop recruiting new volunteers during the 7th week.

More can be learned about geometric sequences at brainly.com/question/11847927

#SPJ1

3 0

1 year ago

6. The California Tiger Salamander is an endangered species, which decreases at the rate of 4.6% per year in a habitat that curr

kicyunya [14]

$\rule{2000pt}{1000000pt}$

7 0

2 years ago

Find the least common multiple of 7,9 and 21

lawyer [7]

Free LCM Calculator determines the least common multiple (LCM) between 9 and 21 the smallest integer that is 63 that is divisible by both numbers. Least Common Multiple (LCM) of 9 and 21 is 63.
...
Prime Factorization of 21.
3 21
7 7
1

3 0

3 years ago

Find the radius of a circle that has an area of 6.76 cm². Use it for pi.

Inessa05 [86]

Answer:

<h2>radius = 1.47 cm</h2>

Step-by-step explanation:

Area of a circle = πr²

where

r is the radius

From the question

Area = 6.76 cm²

To find the radius substitute the value of the area into the above formula and solve for the radius

That's

$6.76 = \pi \: {r}^{2}$

Divide both sides by π

We have

${r}^{2} = \frac{6.76}{\pi} \\ r = \sqrt{ \frac{6.76}{\pi} }$

r = 1.46689291

We have the final answer as

radius = 1.47 cm

Hope this helps you

8 0

3 years ago