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3 years ago

What is the probability of rolling a 2 first and then rolling an odd number? Help please

Mathematics

2 answers:

Oliga [24]3 years ago

7 0

The first one Answer:1/36

Sauron [17]3 years ago

7 0

Six sides of a dice. So rolling a 2 is a 1/6 chance. Rolling an odd the next time means you have a 1/2 chance of rolling an odd. So 1/6 times 1/2 is 1/12.

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Five less than one fourth of my age is 12

Ber [7]

5 less than (-5) of 1/4 of my age (age/4) is 12 (=12)

-5+a/4=12
add 5 to both sides
a/4=17
times 4 both isdes
a=68

your age is 68

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3 years ago

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"the sum of the digits of a two-digit number is 12. The difference of the digits is 2. find the number if the units digit is lar

Stells [14]

let the number be xy then

x + y = 12

y - x = 2 ( because y > x)

adding we get 2y = 14 so y = 7

and x = 12 - 7 = 5

So the number is 57.

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3 years ago

How many triangles and quadrilaterals altogether can be formed using the vertices of a 7-sided regular polygon?

MAVERICK [17]

Answer: The correct option is

(E) 70.

Step-by-step explanation: We are given to find the number of triangles and quadrilaterals altogether that can be formed using the vertices of a 7-sided regular polygon.

To form a triangle, we need any 3 vertices of the 7-sided regular polygon. So, the number of triangles that can be formed is

$n_t=^7C_3=\dfrac{7!}{3!(7-3)!}=\dfrac{7\times6\times5\times4!}{3\times2\times1\times4!}=35.$

Also, to form a quadrilateral, we need any 4 vertices of the 7-sided regular polygon. So, the number of quadrilateral that can be formed is

$n_q=^7C_4=\dfrac{7!}{4!(7-4)!}=\dfrac{7\times6\times5\times4!}{4!\times3\times2\times1}=35.$

Therefore, the total number of triangles and quadrilaterals is

$n=n_t+n_q=35+35=70.$

Thus, option (E) is CORRECT.

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3 years ago

Your English teacher has given you a list of 10 possible topics for essays. You need to pick four topics from the list to write

-Dominant- [34]

10-12 i think, because 10*4=40 and 12*4=48

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3 years ago

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Lana71 [14]

Answer:

A = (5,3)

B = Begin at origin, move 3 units in a positive direction along the x-axis, move 4 units in a positive direction parallel to the y-axis

C = (4.5, 6)

D = Begin at origin, Move 0 units along the x-axis, Move 4.5 units in positive direction parallel to the y-axis

Step-by-step explanation:

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3 years ago

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