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3 years ago

Help plz:( (plz show work)

Mathematics

1 answer:

aksik [14]3 years ago

7 0

1 out of 6 so 1/6. there are 6 numbers and you only have a one out of 6 chance to roll that specific number (7).

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A common denominator for 5/6 and 3/5 is

Y_Kistochka [10]

factors of 6: 6 12 18 24 30

factors of 5: 5 10 15 20 25 30

so its 30

or simply multiple the denominators 6×5=30

3 0

2 years ago

What is the domain of the function graphed ?

ankoles [38]

Remember that the domain is all possible x values.

Here, the highest x value is 2 and the lowest is -4, which makes A and D incorrect.
x can also be anything between 2 and -4, so B is also incorrect.

That leaves C our answer.

4 0

3 years ago

A boat takes 5 hours to go upstream. It can go 50 miles downstream in the same time. Find the rate of the current in the rate of

natka813 [3]

Answer:

Rate of current is 3 miles per hour and speed of the boat in still water is 7 miles per hour.

Step-by-step explanation:

This question is incomplete; find the complete question here.

A boat travels 20 miles upstream in 5 hours. Going downstream, it can travel 50 miles in the same amount of time. Find the speed of the current and the speed of the boat in still water.

Let the speed boat in the still water = x miles per hour

and the speed (rate) of the current = y miles per hour

Speed of the boat to go upstream (against the current) will be = (x - y)miles per hour

Since boat takes 5 hours downstream to travel 50 miles then from the formula,

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

$5=\frac{50}{(x+y)}$

(x + y) = 10 -------(1)

Boat takes 5 hours to travel 50 miles upstream then,

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

5 = $\frac{20}{(x-y)}$

x - y = 4 -----(2)

By adding equation (1) and question (2)

(x + y) + (x - y) = 14

2x = 14

x = 7 miles per hour

From equation (1),

7 + y = 10

y = 3 miles per hour

Therefore, Rate of current is 3 miles per hour and speed of the boat in still water is 7 miles per hour.

5 0

3 years ago

A cone has a radius of 3 m and a height of 10 m find the volume of the cone. Round your answer to the nearest 10th if necessary.

Artemon [7]

V of a cone= 1/2 $*pi * r^{2} *h$
V=1/2*pi*r^2*h = .5*pi*(9)*(10) = 141.4m^3

5 0

4 years ago

Reflecting over the x-axis in words and formula

Ksivusya [100]

Answer:

Formula: (x, -y), when reflecting over the x-axis you keep the x-value the same, but change the sign of the y-value. For example: You have the original coordinates (3, 5), and if you reflect it over the x-axis it’ll be (3, -5).

4 0

3 years ago