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2 years ago

9

Which ecosystem was Marie most likely exploring?

2 answers:

Ugo [173]2 years ago

6 0

Answer:

A.Tropical savanna

Step-by-step explanation:

Because I just did the practice.

Brrunno [24]2 years ago

3 0

Answer:

A. tropical savanna

Step-by-step explanation:

I took the test and it was alright trust me please

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There are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the

lara [203]

3/10 due to there being 10 marbles (for white) for blue 7/10

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3 years ago

Simplify (4x+7)-(-3x-9)+9x-28

MrRissso [65]

Answeriadk

Step-by-step explanation:

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2 years ago

The mean of five numbers is 6 the median is 7 and the mode is 2. What is the answer?

Lady_Fox [76]

Answer:

2,2,7,9,10

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2 years ago

For what value of k are the roots of the quadratic equation kx (x-2)+6=0 equal?

ser-zykov [4K]

Answer:

$\boxed{\sf k=6}$

Step-by-step explanation:

$\sf kx (x-2)+6=0$

Expand brackets.

$\sf kx^2 -2kx+6=0$

This is in quadratic form.

$\sf ax^2 +bx+c=0$

Since this is for equal roots:

$\sf b^2 -4ac=0$

$\sf a=k\\b=-2k\\c=6$

$\sf (-2k)^2 -4(k)(6)=0$

$\sf 4k^2-24k=0$

$\sf 4k(k-6)=0$

$\sf 4k=0\\k=0$

$\sf k-6=0\\k=6$

Plug k as 0 to check.

$\sf \sf 0x^2 -2(0)x+6=0\\6=0$

False.

So that means k must equal 6.

3 0

3 years ago

(x - 6)^2 - 12 = x^2- 12x + c. What is the value of c?

mojhsa [17]

Answer:

C = 24

Step-by-step explanation:

(x - 6)² - 12 = x² - 12x + c

(x - 6) (x - 6) -12 = x² - 12x + c

x(x - 6) - 6(x - 6) - 12 = x² - 12x + c

x² - 6x -6x + 36 - 12 = x² - 12x + c

x² - 12x +36 - 12 = x² - 12x + c

x² - 12x + 24 = x² - 12x + c

24 = c

4 0

1 year ago