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4 years ago

8

a bag contains 10 black marbles, 20 white marbles, and 5 grey.you pick one without looking. what is the probability that the mar

ble will be either white or grey

1 answer:

VladimirAG [237]4 years ago

6 0

Black - 10/35 (2/7)
White - 20/35 (4/7)
Grey - 5/35 (1/7)

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4-2(3x + 1) = 32<br> Help pls an show work

PilotLPTM [1.2K]

the answer is 11123475

Step-by-step explanation:

1+1=1

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3 years ago

Read 2 more answers

The value of the digit in the hundredths place of 0.44 is how many times as much as the value of the digit in the tenths place

dangina [55]

The hundreths place of 0.44 is the second 4, aka 0.4(4) <-- this digit.
The digit in the tenths place is 0.(4)4 <--- the one circled by the brackets.

So the value of the digit in the hundreths place is 0.04, while the value of that in the tenths place is 0.4~

You should be able to get to the answer from here, if not, I'll be here to answer/follow through~ :)

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3 years ago

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rosijanka [135]

Answer:

c

Step-by-step explanation:

and the answer is c

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3 years ago

Given f(x) = x^2 − 2x − 5.

lukranit [14]

Answer:

$(x - 1)^2 - 6$

Step-by-step explanation:

You need to know:

Vertex form = $a(x -h)^2 + k$

The vertex is at

(h, k)

<u>Need to know about perfect squares </u>

<u>Need to know how to complete the square.</u>

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

<u>To convert $x^2-2x-5$ you need to complete the square on the equation.</u>

Complete the Square $x^2 - 2x -5$

$x^2 - 2x -5$

$(x^2 - 2x) -5$

Divide -2 by 2 and then square it.

$\frac{-2}{2} = -1$

$-1^2 = 1$

Add the one to the parentheses and subtract the one from the 5

$(x^2 - 2x +1) -5 -1$

Square $(x^2 - 2x +1)$

$(x-1)^2$

Now we have

$(x - 1)^2 -5 -1$

<u>Next add</u> -5 - 1 = -6

$(x - 1)^2 - 6$

Our quadratic is in vertex form now.

Vertex form = $a(x -h)^2 + k$

our equation = $(x - 1)^2 - 6$

Vertex = (1, -6)

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4 years ago

What is the answer to this equation? (picture attached)

SashulF [63]

Answer:

x = $\frac{42}{5}$

Step-by-step explanation:

Given

19 - $\frac{5x+6}{4}$ = 7 ( subtract 19 from both sides )

- $\frac{5x+6}{4}$ = - 12

Multiply both sides by - 4 to clear the fraction and the negative signs

5x + 6 = 48 ( subtract 6 from both sides )

5x = 42 ( divide both sides by 5 )

x = $\frac{42}{5}$

6 0

4 years ago