3 years ago

40x-25 y = 180 Solve for x and y

Mathematics

1 answer:

Lostsunrise [7]3 years ago

6 0

Answer:

5 /8y+9/2

Step-by-step explanation:

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Suppose a box of Cracker Jacks contains one of 5 toy prizes: a small rubber ball, a whistle, a Captain America decoder ring, a r

lakkis [162]

Answer:

11.42 boxes

Step-by-step explanation:

For the first box bought, there is a 100% chance of getting a unique toy (since you still don't have any). E₁ = 1.

After that, there is a 4 in 5 chance of getting a unique toy from the next box, the expected number of boxes required is:

$E_2 = (\frac{4}{5})^{-1} = 1.25$

For the next unique toy, there is now a 3 in 5 chance of getting it:

$E_3 = (\frac{3}{5})^{-1} = 1.67$

Following that logic, there is a 2 in 5 chance of getting the 4th unique toy:

$E_4 = (\frac{2}{5})^{-1} = 2.5$

Finally, there is a 1 in 5 chance to get the last unique toy:

$E_5 = (\frac{1}{5})^{-1} = 5$

The expected number of boxes to obtain a full set is:

$E=E_1+E_2+E_3+E_4+E_5\\E=1+1.25+1.67+2.5+5\\E=11.42\ boxes$

5 0

3 years ago

Jack has two jars of wax. One jar is 1/6 full. The other jar is 4/6 full. Write an equation to find the amount of wax Jack has.

Solnce55 [7]

Answer:

1/6 + 4/6 = 5/6

Step-by-step explanation:

I hope this helped

5 0

3 years ago

Can someone please explain why x= -2! ASAP!!

bearhunter [10]

Because you add both negative x’s which is -2 and add the -6 in the right side so then it’s -2x=4
Divide and you get x=-2

6 0

3 years ago

Read 2 more answers

Suppose you have the points (5 ,8) and (2 ,3) how do you creat a equation in slope intercept form that passes through those two

anyanavicka [17]

If you put it into the slope intercept from (x1,y1) and (x2,y2)

then subtract 3-8 and 2-5 you should get 5\3 as your answer.

6 0

3 years ago

URGENT PLEASE ANSWER THIS MATH QUESTION

Roman55 [17]

Answer:

10.7

Step-by-step explanation:

You set up the proportion like this:

$\frac{x}{8} =\frac{4}{3}$

When you solve for x you get

$x=\frac{32}{3}=10.66666667$

x=10.7 rounded to the nearest tenth

6 0

3 years ago