Ask question

Ask question

All categories

2 years ago

15

PLS HELP FAST

1 answer:

Akimi4 [234]2 years ago

3 0

Step-by-step explanation:

Becuase all circles are similar.

You might be interested in

Select all the possible input-output pairs for the function

mrs_skeptik [129]

Answer:

A.(-1,-1)

E.(4,64)

Step-by-step explanation:

We are given that

Function

$y=x^3$

We have to find all possible input-output pairs for the function.

Substitute x=-1

$y=(-1)^3=-1$

Then, the pair is (-1,-1)

Now, substitute x=-2

$y=(-2)^3=-8$

Then, pair is (-2,-8)

Now, substitute x=3

$y=3^3=27$

Now, substitute x=4

$y=4^3=64$

Now, substitute x=1

Then, y=1

Hence, Option A and E are true.

A.(-1,-1)

E.(4,64)

7 0

3 years ago

Read 2 more answers

All organisms are made of cells. __________<br><br> Is it a fact,hypothesis,theory,or law

Damm [24]

Answer:

fact

Step-by-step explanation:

.................

4 0

3 years ago

4r+3=-18 please help me

lorasvet [3.4K]

Subtract three from either side. That will give you 4r=-21. Divide -21 by 4 and r will equal -5.25.

6 0

3 years ago

Which of these references a velocity (not speed) more than one answer 50 mph

UNO [17]

Answer:b

Step-by-step explanation:

5 0

3 years ago

A civil engineer is analyzing the compressive strength of concrete. Compressive strength is normally distributed with A random s

wel

Answer:

95%: (3278.354 ; 3270.083)

99% : (3221.646 ; 3278.354)

Step-by-step explanation:

Given :

Sample size, n = 12

Mean, xbar = 3250

Sample standard deviation = √1000

The 95% confidence interval :

Mean ± Margin of error

Margin of Error = Tcritical * s/√n

Tcritical at 0.05, df=12-1 = 11 ;

Tcritical at 95% = 2.20

Hence,

Margin of Error = (2.20 * √1000/√12) = 20.083

Confidence interval : 3250 ± 20.083

Lower boundary = 3250 - 20.083 = 3229.917

Upper boundary = 3250 + 20.083 = 3270.083

2.)

The 99% confidence interval :

Mean ± Margin of error

Margin of Error = Tcritical * s/√n

Tcritical at 0.01, df=12-1 = 11 ;

Tcritical at 99% = 3.106

Hence,

Margin of Error = (3.106 * √1000/√12) = 28.354

Confidence interval : 3250 ± 28.354

Lower boundary = 3250 - 28.354 = 3221.646

Upper boundary = 3250 + 28.354 = 3278.354

3 0

3 years ago