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2 years ago

What is 22 hundredths as a decimal ?

Mathematics

2 answers:

Schach [20]2 years ago

8 0

.022 would be 22 hundredths as a decimal

Archy [21]2 years ago

7 0

0.022 or0.22 I guess

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Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to

denpristay [2]

Answer: The point estimate for the mean is <u>2.59</u> and the margin of error is <u>0.13</u> .

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\mu\pm E$ , where E is the margin of error .

Given : At the end of one year, the store used the weekly sales information to construct a 95% confidence interval for the mean number of emeralds sold per week.

The confidence interval they calculated was (2.46,2.72) .

The lower limit of the confidence interval : $\mu-E=2.46$ (1)

The upper limit of the interval : $\mu+E=2.72$ (2)

Adding (1) and (2) , we get

$2\mu=5.18\\\\\Rightarrow\mu=2.59$

Now, Subtracting (1) from (2) , we get

$2E =0.26\\\\\Rightarrow\ E=0.13$

Hence, the point estimate for the mean is 2.59 and the margin of error is 0.13 .

7 0

3 years ago

The triangles below are similar. What is the value of x ?

Mandarinka [93]

Answer:

Step-by-step explanation:

Since triangle ADE and triangle ABC are similar, that means their sides are proportional, thus we get the equation

$\frac{AD}{AB} =\frac{DE}{BC}$

$\frac{2}{6} = \frac{x}{12}$

$6x = 24\\x=4$

Thus the value of x is 4

7 0

2 years ago

2010 0.15

aniked [119]

Answer:

it is a :) hope this helped :)

Step-by-step explanation:

4 0

3 years ago

Help me to prove the given below. Thank you in advance

sleet_krkn [62]

Answer:

Construct MO, where O is the midpoint of CG. (As shown in the attached figure)

(1) LM = MG //given, CM is the median to the hypotenuse

(2) CO = OG // construction

(3) MO is a mid-segment //(1), (2) , Definition of a mid-segment

(4) MO // LC //triangle mid-segment theorem

(5) ∠MOG ≅ ∠LCO // corresponding angles in two parallel lines intersected by a transversal line (CG)

(6) m∠LCO=90° //given, ΔLCG is a right triangle

(7) m∠MOG=90° //(5), (6), definition of congruent angles

(8) m∠MOC=180° – 90° = 90° // linear pair

(9) ∠MOG ≅ ∠MOC //(7),(8), definition of congruent angles

(10) MO=MO //common side, reflexive property of equality

(11) ΔMCO ≅ ΔMGO //(2), (9), (10) Side-Angle-Side postulate

(12) MC = MG // Corresponding sides in congruent triangles (CPCTC)

(13) MG= ½LG // Given, CM is the median to the hypotenuse

(15) MC = ½LG //(12) , (13), substitution

8 0

3 years ago

What is the answer to this?

alexdok [17]

Answer:

x < 2.5
x > 2.5

Step-by-step explanation:

One way to do this is to try a number for x and see if it makes the inequality true. A suitable number here is x=0. This value of x is less than 2.5.

For x=0, you have ...

5 > -5 . . . . . true; the solution space is x < 2.5

For x=0, you have ...

-25 > -5(2.5)

-25 > -12.5 . . . . . false; the solution space is x > 2.5

_____

<em>Alternate solution</em>

Subtract 5:

-4x > -10

Divide by -4

x < 2.5

Divide by -5:

5 < x +2.5

Subtract 2.5

2.5 < x

x > 2.5

6 0

2 years ago