Can some one please explain to me how to do these three problems so that I can do the rest of my home work. THANK YOU
Can some one please explain to me how to do - 1

Answers

Answer 1
Answer: 1.4²+b²=3.1²
1.96+b²=9.61
b²=7.65
b=√7.65
b=2.8(rounded to the nearest tenth)

5²+12²=C²
25+144=c²
169=c²
c=√169
c=13cm

6²+3²=c²
36+9=c²
c²=45
c=√45
c=6.7ft ( rounded to the nearest tenth)
Answer 2
Answer: a² + b² = c²
1.4² + b² = 3.1²
1.96 + b² = 9.67
-1.96         -1.96
           b² = 7.71
            b ≈ 2.78
-----------------------------------------------------------------------------------------------
a² + b² = c²
5² + 12² = c²
25 + 144 = c²
169 = c²
13 = c
-----------------------------------------------------------------------------------------------
a² + b² = c²
6² + 3² = c²
36 + 9 = c²
45 = c²
6.71 ≈ c

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Increase £680 by 15%

Answers

\pounds \ 680 \cdot 15\ \% = \pounds \ 680 \cdot 0.15=\pounds \ 102\n\n\pounds \ 680 + \pounds \ 102 = \pounds \ 782


a) multiply 680 x 15 = 10,200
b) divide 10,200 by 100 = 102
c) Add 680 + 102 =  £782

What is the surface area? I can't figure it out...

Answers

Answer: wouldn't be 18 m because half is 9 m.

HOPE THIS HELPS :D

Answer:

A≈926.54

Step-by-step explanation:

π r 2 + π L r , \pi r^2 + \pi L r, πr2+πLr, where r denotes the radius of the base of the cone, and L denotes the slant height of the cone.Using the formulas

A=πrl+πr2

l=r2+h2

Solving forA

A=πr(r+h2+r2)=π·9·(9+222+92)≈926.54225

What is the algebraic expression for the following word phrase: the quotient of 3 and z

Answers

3/z
Or at least im quite sure, being that quotient implies division
3 divided by z is the answer

A West Coast university statistics professor wishes to determine which surfboard brand delivers consistently longer rides, Channel Island or JS. He recruits two of his students who surf to assist in an experiment, and the student assigned to the Channel Island board is determined by coin flip. The three head out to the beach for an afternoon, with the professor holding up a sign at random times for the respective student to catch the next wave on his board, and the time spent on that wave is recorded. This is repeated until each student has ridden 10 waves. The brand of surfboard in this story is A) the explanatory variable. B) a parameter. C) stratified.D) the response variable. E) blinded.

Answers

Answer:

This is repeated until each student has ridden 10 waves. The brand of surfboard in this story is "the explanatory variable"

Step-by-step explanation:

the explanatory variable otherwise known as the the Independent variable.

in the scenario above the brand of surfboard is independent of the event because the brand doesn't matter in the experiment.

HELPPP PLEASE!!Three research departments have 10, 7 ,6 and members, respectively. If each department is to select a delegate and an alternate to represent the department at a conference, in how many ways can this be done?

Answers

im not for sure if i did this right but my calculator says that its 420.
hope i helped.

Diego says the constant of proportionality is 550 Andrew say is the constant of proportionality is 9 1/6 do you agree with either of them explain your reason

Answers

Answer:

The question is incomplete. The complete question is :

A plane traveling at a constant speed flew over Pittsburgh, Saint Louis, Albuquerque, and Phoenix on its way from New York to San Diego.

Complete the table as you answer the questions. Be prepared to explain your reasoning.

       segment                              time                     distance        speed

Pittsburgh to Saint Louis    1 hour                    550 miles  

Saint Louis to Albuquerque 1 hour 42 minutes  

Albuquerque to Phoenix                             330 miles  

Step-by-step explanation:

We can complete the table as :

  segment                              time                     distance        speed

Pittsburgh to Saint Louis    1 hour                   550 miles   550 miles/hour

Saint Louis to Albuquerque 1 hour 42 minutes    93.5 miles550 miles/hour

Albuquerque to Phoenix   3/5 hour           330 miles 550 miles/hour

Since it is given in the question that the plane is flying in a constant speed from one place top another place.

So, it is maintaining the same speed to cover different distances for different time.

Thus the constant of proportionality is 550.

Final answer:

The constant of proportionality depends on the specifics of the problem at hand. Without further details, it's impossible to definitively say if either Diego or Andrew is correct in their assertion.

Explanation:

Given the question, the constant of proportionality depends on the context and the given problem. We can't necessarily say that Diego or Andrew is correct without more information regarding the variables they are considering. In mathematics, a constant of proportionality is the constant value or ratio that relates two variables in a proportional relationship. To determine whether Diego's or Andrew's values are correct, we will need the specifics of the problem at hand.

Learn more about Constant of Proportionality here:

brainly.com/question/32705509

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