Answer:
use photo math, take a picture of the equation, go down to the graph and see if there is a plot on (3,-2)
Answer:
Confidence interval = ( 15.29 to 17.51 minutes)
Step-by-step explanation:
the sample mean x = 16.40 minutes
the sample standard deviation r = 4.00 minutes.
Number of samples n = 50
Confidence interval is 95%
Z* = t(0.025) = 1.96
Confidence interval = x +/- (Z* × r/√n)
= 16.40 +/- (1.96 × 4.00/√50)
= 16.40 +/- 1.11
Confidence interval = ( 15.29 to 17.51 minutes)
Answer:
D
Step-by-step explanation:
(4x√5x^2 +2x^2√6)^2
remove the last ^2 by multiplying the parenthesis by each other:
(4x√5x^2 +2x^2√6) * (4x√5x^2 +2x^2√6)
use FOIL & distribute :
4x√5x(4x√5x +2x^2√6) +2x^2√6(4x√5x +2x^2√6)
apply the distributive property once more:
4x^2√5(4x^2√5)+ 4x^2√5(2x^2√6) + (2x^2√6(4x^2√5) +2x^2√6(2x^2√6)
remove parenthesis and combine like terms to get:
104x^4+16x^4√30
answer is D
Answer:
70%
Step-by-step explanation:
This one i don't understand it every well sorry about it
9514 1404 393
Answer:
a) zeros: -2/3, 6
b) x < -2/3, signs: -, -; sign of product: +
-2/3 < x < 6, signs: +, -; sign of product: -
x > 6, signs: + +; sign of product: +
c) solution: x < -2/3 ∪ x > 6
Step-by-step explanation:
a) The zeros of the product are the values of x that make either factor zero. (A product is only zero if one of the factors is zero.)
3x +2 = 0 ⇒ x = -2/3
x -6 = 0 ⇒ x = 6
The zeros of the quadratic are x = -2/3 and x = 6.
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b) For values of x left of the left-most zero, both factors are negative. For values of x between the zeros, the left factor is positive and the right factor is negative. For values of x greater than the right-most zero, both factors are positive. That is, for large negative values of x, all factors are negative. Working left-to-right, each time a zero is crossed, one factor changes sign.
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c) The solution is where the signs of the factors match:
x < -2/3 or -6 < x