3 years ago

Which of the following are true about the correlation coefficient? Select all that apply.

Mathematics

1 answer:

Ber [7]3 years ago

7 0

Answer:

number 1 is correct

Step-by-step explanation:

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X2+10x+16 Help Needs factorising It is not 8 and 2

Kryger [21]

Answer:

X2+10x+16=0

Step-by-step explanation:

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3 years ago

Find the volume of the cylinder with R= 3 m H = 10 m

Natalka [10]

$v = bh

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3 years ago

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Hey guys i don't have much but this is urgent pls :(

Gre4nikov [31]

Answer:

3 feet.

Step-by-step explanation:

I hope this helps!

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Find the selling price of an item listed at $400 subject to a discounted series of $25%, 10%, and 5%

Harman [31]

$400 - ($400 x 0.25) = $300

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answer
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3 years ago

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Select the two values of x that are roots of this equation. 2x2 + 11x+15= 0

USPshnik [31]

Answer:

The two values of x are -2.5 and -3

Step-by-step explanation:

we have

$2x^{2}+11x+15=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$a=2\\b=11\\c=15$

substitute in the formula

$x=\frac{-11(+/-)\sqrt{11^{2}-4(2)(15)}} {2(2)}$

$x=\frac{-11(+/-)\sqrt{1}} {4}$

$x=\frac{-11(+/-)1} {4}$

$x_1=\frac{-11(+)1} {4}=-2.5$

$x_2=\frac{-11(-)1} {4}=-3$

therefore

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3 years ago

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