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2 years ago

An 80% confidence interval is found to be (12, 20). What is the margin of error?

Mathematics

1 answer:

Sonja [21]2 years ago

4 0

Answer:4

Step-by-step explanation:

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PLEASE HELP DUE IN TONIGHT!!!

wel

Answer:

(1,2)

Step-by-step explanation:

4×1=4

3×2=6

then add 4+6 to get 10

then you do the same for the bottom so

5×1=5

4×2=8

5+8=13

4 0

3 years ago

I need answers plz help me

ddd [48]

The answer is C.
I added the fractions of the leftovers together and I got 25/24.

5 0

2 years ago

Find dy/dx by implicit differentiation. y cos x = 5x2 + 3y2

lbvjy [14]

Step 1:
Start by putting $\frac{d}{dx}$ in front of each term

$\frac{d}{dx}[y cos x]= \frac{d}{dx}[5x^2]+ \frac{d}{dx}[ 3y^2]$
-----------------------------------------------------------------------------------------------------------------
Step 2:

Deal with the terms in 'x' and the constant terms
$\frac{d}{dx}[ycosx]= 10x+ \frac{d}{dx} [3y^2]$
----------------------------------------------------------------------------------------------------------------
Step 3:

Use the chain rule for the terms in 'y'
$\frac{d}{dx}[ycosx]=10x+6y \frac{dy}{dx}$
--------------------------------------------------------------------------------------------------------------
Step 4:

Use the product rule on the term in 'x' and 'y'
$(y) \frac{d}{dx} cos x+(cos x) \frac{d}{dx}y =10x+6y \frac{dy}{dx}
$
$y(-siny)+(cosx) \frac{dy}{dx} =10x+6y \frac{dy}{dx}$
--------------------------------------------------------------------------------------------------------------

Step 5:

Rearrange to make $\frac{dy}{dx}$ the subject
$-y sin(y)+cos(x) \frac{dy}{dx} =10x+6y \frac{dy}{dx}$
$cos(x) \frac{dy}{dx}-6y \frac{dy}{dx}=10x+y sin(y)$
$[cos(x) - 6y] \frac{dy}{dx}=10x + y sin(y)$
$\frac{dy}{dx}= \frac{10x+ysin(y)}{cos(x)-6y}$ ⇒ Final Answer

5 0

3 years ago

What do you call a character’s direct speech in a literary text?

Nat2105 [25]

I think dialogue sorry if it is wrong

3 0

2 years ago

10) g(n) = -21+ 3n; Find gl-6)<br> A) 152 <br> B) -20<br> C) 1<br> D) 90

defon

10) g(n) = -21+ 3n; Find gl-6)
A) 152
B) -20
C) 1
D) 90
Your answer would be B

If this helped can I please get brainliest

6 0

2 years ago