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3 years ago

A number halved and then halved again is equal to 2. What was the original number?

Mathematics

2 answers:

ArbitrLikvidat [17]3 years ago

4 0

I believe the answer is 8

Fantom [35]3 years ago

3 0

I think that the original # was 3 because if u half 3, it turns into 2 1/2 ,and if u half 3 AGAIN, it will then turn to 2. Hope it helps. Its like subtracting 3 and one half, finding the value of that and then subtracting the value with one half again.

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Least common multiple for 16 and 24

Yuri [45]

You can multiply 16 by 3 (the only prime factor of 24 not shared by 16), to find the LCM: 3 * 16 = 48
-- So 48 is the answer

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3 years ago

Read 2 more answers

A survey of an urban university (population of 25,450) showed that 870 of 1,100 students sampled supported a fee increase to fun

Katen [24]

Answer:

95% confidence interval for the proportion of students supporting the fee increase is [0.767, 0.815]. Option C

Step-by-step explanation:

The confidence interval for a proportion is given as [p +/- margin of error (E)]

p is sample proportion = 870/1,100 = 0.791

n is sample size = 1,100

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value (z) at 5% significance level is 1.96.

E = z × sqrt[p(1-p) ÷ n] = 1.96 × sqrt[0.791(1-0.791) ÷ 1,100] = 1.96 × 0.0123 = 0.024

Lower limit of proportion = p - E = 0.791 - 0.024 = 0.767

Upper limit of proportion = p + E = 0.791 + 0.024 = 0.815

95% confidence interval for the proportion of students supporting the fee increase is between a lower limit of 0.767 and an upper limit of 0.815.

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3 years ago

Solve the following by completing the square.

sertanlavr [38]

I think it might be D. I'm just giving an educated guess.

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2 years ago

Point m is the midpoint of ab¯¯¯¯¯ . am=2x+9, and ab=8x−50. what is the length of am¯¯¯¯¯¯ ?

iogann1982 [59]

Since m is the midpoint of ab, then the following relationship is fulfilled:
$am = \frac{ab}{2}$
Therefore, substituting values we have:
$2x+9 = \frac{8x-50}{2}$
From here, we clear the value of x.
We have then:
$2x+9 = 4x-25$
$9+25 = 4x-2x$
$34 = 2x$
$x = \frac{34}{2}$
$x = 17$
Then, the value of am, is given by substituting x in the expression:
$am=2x+9$
Substituting we have:
$am=2(17)+9$
$am=34+9$
$am=43$
Answer:
the length of am is:
$am=43$

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4 years ago

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Yuliya22 [10]

Square, parallelogram, or rectangle. Any 4 sided object, just count the sides.

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3 years ago