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3 years ago

What is the probability of tossing a coin and getting a head 4 times in a row?

Mathematics

2 answers:

aleksklad [387]3 years ago

7 0

Answer:

d) 1/16

Step-by-step explanation:

1/2 · 1/2 ·1/2 · 1/2 = 1/16

alexira [117]3 years ago

6 0

Answer:

Step-by-step explanation:

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Please help me find the area of this shape

oee [108]

Answer:

Step-by-step explanation:

15 x 7 = 105

The gap is either 9 x 7 =63 or 12 x 7 = 84

105 - 84 = 21

105 - 63 = 42

So the shaded area is either is 21 or 42

7 0

2 years ago

Which formula can be used to find the nth term of a geometric sequence where the fifth term is 1/16 and the common ratio is 1/4?

ale4655 [162]

Any geometric sequence can be expressed as:

a(n)=ar^(n-1), a=initial term, r=common ratio, n=term number

We are given that a(5)=1/16 and r=1/4 so we can say:

1/16=a(1/4)^(5-1)

1/16=a(1/4)^4

1/16=a/256

256/16=a

16=a

So the initial term is 16 so our formula is:

a(n)=16(1/4)^(n-1)

3 0

3 years ago

Read 2 more answers

Which point could be on the line that is perpendicular to Line M N and passes through point K? (0, −12) (2, 2) (4, 8) (5, 13)

zavuch27 [327]

Answer:

B: (2,2)

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Given: a-b= c-d, b=d-1, c=6; prove: a=5

Brut [27]

Given :

a-b = c-d ...1)

b = d-1 ...2)

c = 6

To Prove :

a = 5

Solution :

Adding equation 1 and 2, we get :

(a-b) + (b) = (c-d) + (d-1)

a = c -1 ...3)

Putting given value of c = 6 in above equation, we get :

a = 6 - 1

a = 5

Hence, proved.

6 0

3 years ago

Y= 3x-1 2x+6=y substitution method

vfiekz [6]

Answer: (7, 20)

Concept:

There are three general ways to solve systems of equations:

Elimination
Substitution
Graphing

Since the question has specific requirements, we are going to use substitution to solve the equations.

Solve:

Given equations

y = 3x - 1

2x + 6 = y

Substitute the y value since both equations has isolated [y]

2x + 6 = 3x - 1

Add 1 on both sides

2x + 6 + 1 = 3x - 1 + 1

2x + 7 = 3x

Subtract 2x on both sides

2x + 7 - 2x = 3x - 2x

$\boxed{x=7}$

Find the value of y

y = 3x - 1

y = 3(7) - 1

y = 21 - 1

$\boxed{y=20}$

Hope this helps!! :)

Please let me know if you have any questions

3 0

3 years ago

Read 2 more answers