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Mila [183]
2 years ago
9

Which decimals as the same value as 2 divided by 5

Mathematics
2 answers:
LenKa [72]2 years ago
5 0

Answer:

anything that ends in 0 like .10

lutik1710 [3]2 years ago
4 0

4/10, 8/20, 16/40, 32/80...

Can you see a pattern?

We multiply the numerator times 2 and the denominator times 2. We end up with a bunch of equivalent fractions.

Hope it helps you! :)

*GraceRosalia*

************************************************

Please mark Brainliest! :)

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Factor -7x^3+21x^2+3x-9 by grouping. what is the resulting expression?
Daniel [21]

Answer:

c) (3-7x^2)(x-3)

Step-by-step explanation:

-7x^3+21x^2+3x-9

Factor out a -7x^2 from the first two terms and a 3 from the last two terms

-7x^2 (x -3) +3(x-3)

Now factor out (x-3)

(x-3) (-7x^2+3)

Rearranging)

(x-3) (3-7x^2)

8 0
3 years ago
Simplify the following expression.<br> -14x^2+9x-4x^2+5
Naya [18.7K]

Answer:

i think the answer is -18x^(2)+9x+5

-18x^(2)+9x+5

Subtract 4x^2 from  −14x^2

3 0
3 years ago
An IQ test is designed so that the mean is 100 and the standard deviation is 1414 for the population of normal adults. Find the
Amanda [17]

Answer:

37

Step-by-step explanation:

The first thing is to calculate critical z factor

the alpha and the critical z score for a confidence level of 90% is calculated as follows:

two sided alpha = (100% - 90%) / 200 = 0.05

critical z factor for two sided alpha of .05 is calculated as follows:

critical z factor = z factor for (1 - .05) = z factor for (.95) which through the attached graph becomes:

critical z factor = 2.58

Now we have the following formula:

ME = z * (sd / sqrt (N) ^ (1/2))

where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58

N the sample size and we want to know it, replacing:

6 = 2.58 * (14 / (N) ^ (1/2))

solving for N we have:

N = (2.58 * 14/6) ^ 2

N = 36.24

Which means that the sample size was 37.

5 0
3 years ago
What is the fewest number of quarters, nickels, and pennies that can be fairly exchanged for 2 quarters, 6 nickels, and 9 pennie
adoni [48]

Answer:

Your answer is 3 quarters, 2 nickels, and 4 pennies

Step-by-step explanation:

2 quarters plus 6 nickels plus 9 pennies is equal to 89 cents. So if we subtract 75(3 quarters) we get 14 which is less than 25 therefore we must only use nickels and pennies from now on. If we take 14 and subtract 10(2 nickels) we get 4 which less than 5 leaving us only to use pennies, which one a piece so it must be 4 pennies. Hope this helps!

4 0
3 years ago
Pls help find x and y plsssss
SIZIF [17.4K]

Answer:x=143

Step-by-step explanation: set 128=X-15 add 15 to both sides

5 0
2 years ago
Read 2 more answers
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