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garri49 [273]
2 years ago
14

In the formula SA = 4T for the surface area of a triangular pyramid in which the faces are equilateral triangles what does the v

ariable T represent ?
Help me
Mathematics
1 answer:
scZoUnD [109]2 years ago
3 0

Answer:

A

Step-by-step explanation:

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The Florida Tourist Commission selected a random sample of 200 people that attended one or more concerts during the first weeken
Alina [70]

Answer:

0.8 or 80%

Step-by-step explanation:

Let A and B be the events

<em>A: “The concert goer went to Orlampa Skydome” </em>

<em>B: “The concert goer went to the Bithlo Megaplax” </em>

<em> </em>Then the probability P(A) that a concert goer went to Orlampa Skydome is

<em>P(A) = 120/200 = 0.6 </em>

Similarly,

<em> P(B) = 100/200 = 0.5 </em>

<em> </em>We are looking for P(A∪B), the probability that a concert goer went to Orlampa Skydome OR the Bithlo Megaplax.

We know that

P(A∪B) = P(A) + P(B) - P(A∩B)

but P(A∩B) is the likelihood that a concert goer went to Orlampa Skydome AND the Bithlo Megaplax.

Since the events are independent,  

<em> P(A∩B) = P(A)P(B) = 0.6*0.5 = 0.3 </em>

and

P(A∪B) = 0.6 +0.5 - 0.3 = 0.8 or 80%

6 0
3 years ago
Heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelp
ioda
C and E, evaluate the numbers outside of the parenthesis to the inside
8 0
2 years ago
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What’s the distance between (8,-5 ) and (6,4)
Ierofanga [76]

Answer:

Step-by-step explanation:

d^2=(x2-x1)^2+(y2-y1)^2

d^2=(6-8)^2+(4+5)^2

d^2=4+81

d^2=85

d=(85)^(1/2)

d=9.22 (rounded to nearest hundredth)

6 0
3 years ago
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A study will investigate the effectiveness of a new textbook. The samples (
givi [52]

The limitation of the research include:

B. The teachers may differ in number of years teaching.

C. The teachers may differ in early childhood experience.

D. The teachers may differ in number of years teaching reading.

<h3>How to explain the information?</h3>

It should be noted that the information given about the teachers is limited to the fact that they teach preschool. It should be noted that if a teacher has more experience teaching, they are probably better at teaching.

Although both teachers teach preschool, one may have many more years of experience or other qualifications.

Learn more about research on:

brainly.com/question/968894

#SPJ1

A study will investigate the effectiveness of a new early reading program onPrekindergarten students' reading abilities. The samples (n = 30 and

n =35) included in the study are taught by two preschool teachers.

Which of the following are possible limitations of the study? Select all that apply.

A. The sample size is too small.

B. The teachers may differ in number of years teaching.

C. The teachers may differ in early childhood experience.

D. The teachers may differ in number of years teaching reading.

8 0
2 years ago
If a circle has radius 10 cm, find the length of the arc subtended by a central angle of 36°.
snow_lady [41]
Angle =  36 degrees  =  \frac{\pi}{180} \times 36  = \pi / 5

now, radius =  10 cm

so arc =  radius x angle  =  10 x pi/5  =   2pi  = 6.28 cm
3 0
3 years ago
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