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3 years ago

13

Jimmy has a cube labeled 1 through 6 A and a penny. How many different ways can the cube and penny land with one roll of the cub

e and one flip of the penny

1 answer:

PIT_PIT [208]3 years ago

7 0

12. The penny can land two ways (heads or tails) and the cube can land six ways (1, 2, 3, 4, 5, or 6). Therefore, there are twelve possible results.

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If hot and cold water taps are turned on altogether, a bath is filled in three minutes but if the cold tap was only half opened

Anvisha [2.4K]

9514 1404 393

Answer:

12 minutes

Step-by-step explanation:

Let c and h represent the filling times for the cold and hot taps, respectively. When the cold tap is 1/2 open, we presume that means the filling time becomes 2c.

In terms of baths per minute, the relationships are ...

1/c + 1/h = 1/3

1/(2c) +1/h = 1/(3 +1.8) . . . . . 1:48 min:sec is 1.8 minutes

Subtracting the first equation from twice the second, we get ...

2(1/(2c) +1/h) -(1/c +1/h) = 2(1/4.8) -(1/3)

1/h = 2/4.8 -1/3 = 1/12

h = 12

It takes the hot tap 12 minutes to fill the tub alone.

3 0

3 years ago

Solve the decay equation y' = -ky using the integrating factors method. Show work

Alex777 [14]

Answer:

$y=\frac{c}{e^{kx}}$

Step-by-step explanation:

$\frac{\mathrm{d} y}{\mathrm{d} x} =-ky$

$\frac{\mathrm{d} y}{\mathrm{d} x} +ky=0$

comparing with equation

$\frac{\mathrm{d} y}{\mathrm{d} x} + Py=Q(x)$

$I.F.= e^{\int P dx}$

$I.F.= e^{\int k dx}$

$I.F.= e^{kx}$

$y=\frac{1}{I.F.} ( \int {Q(x)} dx +c)$

$y=\frac{1}{e^{kx}} ( \int {0} dx +c)$

$y=\frac{c}{e^{kx}}$

7 0

3 years ago

Please is urgent!!!

Sophie [7]

Answer:

70.6x 10-⁵ is answer of first

4 0

3 years ago

For which values of P and Q does the following equation have Infinity many solutions? P×+57=-75x+Q

Semenov [28]

earrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

p*x+57-(-75*x+q)=0

In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.

Unless there is none then in that case there very well may be infinite solutions

7 0

3 years ago

An equilateral triangle has a height of 7 square root 3 cm. Find the perimeter of the triangle.

gladu [14]

Answer:

42

Step-by-step explanation:

Explanation in image

6 0

2 years ago