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soldier1979 [14.2K]

2 years ago

13

A variable has a mean of and a standard deviation of . observations of this variable have a mean of and a sample standard deviat

ion of . Determine the observed value of the

1 answer:

RideAnS [48]2 years ago

8 0

Answer:

the mean is 26

Step-by-step explanation:

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How do I solve it? URGANT!!!

defon

Answer:

Step-by-step explanation:

KL = JK, so ΔJKL is an isocesles triangle, then m∠J = m∠L

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2 years ago

Estimate. then find the sum. 1.20 plus 0.34

Trava [24]

1.20 + 0.34 = 1.54
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3 years ago

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Use the quadratic formula to solve x² + 9x + 10 = 0.<br><br> What are the solutions to the equation?

jok3333 [9.3K]

Answer:

$-1.30\ and\ -7.70$ (2 decimal places)

Step-by-step explanation:

Quadratic Formula: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

-----------------------------------------------

$x^2+9x+10=0$

Plug in values:

$x=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

First value of x:

$x=\frac{-9+\sqrt{41}}{2}=-1.30$ (2 decimal places)

Second value of x:

$x=\frac{-9-\sqrt{41}}{2}=-7.70$ (2 decimal places)

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3 years ago

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VikaD [51]

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