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Svetllana [295]
3 years ago
12

If the variance of the ages of the people who attended a rock concert is 22, what is the standard deviation of the ages? Round y

our answer to two decimal places
Mathematics
2 answers:
antoniya [11.8K]3 years ago
7 0
For the answer to the question above asking i<span>f the variance of the ages of the people who attended a rock concert is 22, what is the standard deviation of the ages?
The answer is sqrt of 22

which is </span><span>4.69041575982 or 4.69
 I hope my answer helped you.</span>
Rufina [12.5K]3 years ago
7 0

Answer:

If the number of people who attend the concert is 22, the answer is 4.69.

If the number of people who attend the concert is 38, the answer is 6.16.

-Apex

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Prove ΔPAB is isosceles.
Licemer1 [7]

Answer:

See explanation

Step-by-step explanation:

If PX\cong PY, then triangle PXY is isosceles triangle. Angles adjacent to the base XY of an isosceles triangle PXY are congruent, so

\angle 1\cong \angle 2

and

m\angle 1=m\angle 2

Angles 1 and 3 are supplementary, so

m\angle 3=180^{\circ}-m\angle 1

Angles 2 and 4 are supplementary, so

m\angle 4=180^{\circ}-m\angle 2

By substitution property,

m\angle 4=180^{\circ}-m\angle 2=180^{\circ}-m\angle 1=m\angle 3

Hence,

\angle 3\cong \angle 4

Consider triangles APX and BPY. In these triangles:

  • PX\cong PY - given;
  • \angle 5\cong \angle 6 - given;
  • \angle 3\cong \angle 4 - proven,

so \triangle APX\cong \triangle BPY by ASA postulate.

Congruent triangles have congruent corresponding sides, then

AP\cong BP

Therefore, triangle APB is isosceles triangle (by definition).

6 0
3 years ago
the larger of two numbers is 12 more than the smaller number.if the sum of the two numbers is 74,find the two numbers
jek_recluse [69]
X = larger number, y = smaller number

x = y + 12
x + y = 74

y + 12 + y = 74
2y + 12 = 74
2y = 74 - 12
2y = 62
y = 62/2
y = 31

x = y + 12
x = 31 + 12
x = 43

so ur 2 numbers are : 43 and 31
8 0
3 years ago
3x+ 2y= 4 solving for x
Jet001 [13]

First step: Isolate the term that has x. To do that, subtract 2y from both sides.

3x + 2y = 4

3x = -2y + 4

Now divide both sides by 3.

x = \dfrac{-2y + 4}{3}

4 0
3 years ago
Read 2 more answers
Simplify the expression (7+5)+4•13-2
Yakvenalex [24]
Pemdas

Parentheses exponents multiplication divide add subtract (7+5)=12

12+4•13-2 4•13= 52

12+52-2
64-2

The answer is 62
7 0
3 years ago
Read 2 more answers
For the past several years, the high school theater department has performed a musical in their auditorium. Each year since the
goblinko [34]

Answer:

  D.  The independent variable is the number of ticket price increases, and the dependent variable is the ticket sales.

Step-by-step explanation:

The wording, "the table shows A <em>with respect to</em> B" means that "B" is the independent variable. Here, "B" is "the number of times they have increased the price of the ticket." That is ...

the independent variable is the number of ticket price increases

5 0
3 years ago
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