All categories

4 years ago

The probability of spinning a 4, flipping heads, then spinning a 7 is ___.

Mathematics

1 answer:

AnnZ [28]4 years ago

3 0

Answer:

1/7 1/4

Step-by-step explanation:

......…........ ..

You might be interested in

Which ordered pair is a solution to the system of linear equations 1/2x-3/4y=11/60 and 2/5x+1/6y=3/10

natka813 [3]

ANSWER

$( \frac{2}{3} , \frac{1}{5} )$

EXPLANATION

The first equation is

$\frac{1}{2} x - \frac{3}{4} y = \frac{11}{60} ...(1)$

The second equation is

$\frac{2}{5} x + \frac{1}{6} y = \frac{3}{10} ...(2)$

We want to eliminate y, so we multiply the first equation by

$\frac{4}{5}$

$\frac{4}{5} \times \frac{1}{2} x - \frac{4}{5} \times \frac{3}{4} y = \frac{11}{60} \times \frac{4}{5}$

$\frac{2}{5} x - \frac{3}{5} y = \frac{11}{75} ...(3)$

We now subtract equation (3) from (2)

$(\frac{2}{3} x - \frac{2}{3} x )+ ( \frac{1}{6} y - - \frac{3}{5}y ) =( \frac{3}{10} - \frac{11}{75} )$

$\frac{1}{6} y + \frac{3}{5}y =\frac{3}{10} - \frac{11}{75}$

$\frac{23}{30}y = \frac{23}{150}$

Multiply both sides by

$\frac{30}{23}$

$\implies \: \frac{30}{23} \times \frac{23}{30}y= \frac{23}{150} \times \frac{30}{23}$

$\implies \: y = \frac{1}{5}$

Substitute into the first equation to solve for x .

$\frac{1}{2} x - \frac{3}{4} \times \frac{1}{5} = \frac{11}{60}$

Multiply to obtain

$\frac{1}{2} x - \frac{3}{20} = \frac{11}{60}$

$\frac{1}{2} x = \frac{11}{60} + \frac{3}{20}$

$\frac{1}{2} x = \frac{1}{3}$

Multiply both sides by 2.

$2 \times \frac{1}{2} x =2 \times \frac{1}{3}$

$x = \frac{2}{3}$

The solution is

$( \frac{2}{3} , \frac{1}{5} )$

5 0

3 years ago

Read 2 more answers

Kevin read the number two hundred seven thousand ,fourth-eight in a book .What is this number in a standard form ?

Alja [10]

The number would be 207,048.

8 0

3 years ago

Helpppppppppppppppppp

Len [333]

Answer:

$x=4$

Step-by-step explanation:

Hi there!

The two angles given are opposite angles, meaning that they are angles opposite of each other at an intersection.

Opposite angles are always equal:

$8x-5=2x+19$

Combine like terms:

$6x=24$

Divide both sides by 6 to isolate <em>x</em>:

$x=4$

I hope this helps!

4 0

3 years ago

Will give Brainliest! if right!

Leno4ka [110]

I believe it is B, but I'm still unsure !

7 0

3 years ago

What is the sum and simplified

Vinvika [58]

Step 1) Find common denominator. In this case it was 28.
Step 2) Multiply 1/4 by seven to get 7/28 and then 2/7 by 4 to get 14/28.
Step 3) Add numerators: 7+14 to get 21
Step 4) Simpify your new added Fraction 21/28= 3/4

Your answer is 3/4
Please let me know if you would like further explanation (:

6 0

4 years ago

Read 2 more answers