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4 years ago

14

For a chemistry lab, you used 2 ounces of calcium sulfate, 2.5 pounds of copper, and 14 lb of nickel. What was the combined weig

ht of your materials? pounds and ounces

1 answer:

Flauer [41]4 years ago

7 0

That would be 16.625 pounds and/or 266 pounds

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Solve for x <br> (6x+5) (6x+16) (7x-3)

ololo11 [35]

Answer:

i think it is 43

Step-by-step explanation:

5 0

3 years ago

A box contains different colored paper clips. The probability of drawing two red paper clips from the box without replacement is

ivann1987 [24]

Answer: 5/14 which is choice B

================================================

How I got this answer:

Define the following events

A = event of picking a red paper clip on the first selection

B = event of picking a red paper clip on the second drawing

Replacement is not made.

Now onto the probabilities for each

P(A) = 2/5 = 0.4 is given to us as this is simply the probability of picking red on the first try

P(A and B) = probability of both events A and B happeing simultaneously = 1/7

P(B|A) = probability event B occurs, given event A has occured

P(B|A) = probability of selecting red on second selection, given first selection is red (no replacement)

P(B|A) = P(A and B)/P(A)

P(B|A) = (1/7) / (2/5)

P(B|A) = (1/7) * (5/2)

P(B|A) = (1*5)/(7*2)

P(B|A) = 5/14

So if event A happens, then the chances of event B happening is 5/14

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

A more concrete example:

If we had 15 paperclips, and 6 of them were red, then

P(A) = (# of red)/(# total) = 6/15 = 2/5

P(B|A) = (# of red left)/(# total left) = (6-1)/(15-1) = 5/14

P(A and B) = P(A)*P(B|A) = (2/5)*(5/14) = 10/70 = 1/7

7 0

4 years ago

Read 2 more answers

Can someone help me with this please

qaws [65]

Answer:

1. Answer is C

4. Answer is G

Step-by-step explanation:

I'm not sure how to explain 1 since I used a calculator.

Number 4 is where you choose a point on the line and count 4 blocks up and 5 blocks left. If it hits another point on the line then that's the graph.

7 0

3 years ago

Write y=1/6x+7 in standard form using integers

Law Incorporation [45]

The standard form using integers of the equation is 6y - x = 42

<h3>How to determine the standard form</h3>

Note that solving in standard form means writing it as a simple equation

Given y = 1/6x + 7

Find the LCM of the right side, we have

y = $\frac{x + 42}{6}$

Cross multiply

6 × y = x + 42

6y = x + 42

Make the variables move to the left side

6y - x = 42

Thus, the standard form using integers of the equation is 6y - x = 42

Learn more about algebraic expressions here:

brainly.com/question/723406

#SPJ1

8 0

2 years ago

On a coordinate plane, what is the distance between the points at (1,9) and the point (4, 9)?

sammy [17]

If you draw out a coordinate plane you will see that they , on their Y access, are both nine witch means that they a horizontal line so all you have to do is subtract the x access witch is 3.

hope this helped

4 0

4 years ago