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3 years ago

What is the probability of flipping a fair coin and having 3 consecutive heads?

1 answer:

6 0

If you do a tree diagram you can see more easily but the answer is 0.125 or 1/8 because the chance of you flipping a head the first time is 0.5 or 1/2 this is also the same for the second and third time then you just times them all together so 0.5 x 0.5 x 0.5 which is 0.125

Brainliest???

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A farmer packed 3 pints of strawberries every 4 minutes. In the afternoon she packed 2 pints of strawberries every 3 minutes. Wh

MakcuM [25]

Answer:

5 (strawberries / hours)

Step-by-step explanation:

calculation fro morning

strawberries / minutes x minutes / hours = strawberries / hours

so after adding the value in above equation

3/4* 60/1 = 45 strawberries / hours

calculation in the afternoon

strawberries / minutes x minutes / hours = strawberries / hours

2/3 x 60/1 = 40 strawberries / hours

so now by calculating difference between morning and afternoon packing rates, you can easily calculate

45-40 = 5 (strawberries / hours)

8 0

3 years ago

-.25 x+1.3=-.55x-.2 find x

Mamont248 [21]

You need to isolate the variable my dividing each side by factors that don’t contain the variable
x=-5

3 0

2 years ago

What is the value of the expression x exponent 2 when x = 4/5

Gnesinka [82]

X^2 would be substituted, (4/5)^2 so square them 16/25

3 0

3 years ago

What are the coefficients in the expression<br> 8a + b + 9?

agasfer [191]

Answer:

8 and 1

Step-by-step explanation:

Any equation which can be expressed in terms of a,b, c and so on is algebraic expression.

The term a, b , c ...are variables. They are called so be cause their value can change based on change in condition.

Coefficient are the number with which a variable is multiplied with.

Example

10a+ 20b+c+7d+ 10 is algebraic expression.

The terms which is free of any variable is called constant as its value remains fixed.

In above expression 10 is constant term.

Here term a, b,d are multiplied with 10, 20, and 7 respectively. Thus, these terms are coefficient .

If any term does not explicit coefficient then its coefficient is taken as 1.

This can be explained,

as in above example c does not have any explicit coefficient attached with it

"c" can be also expressed as 1*c as multiplication with does alter the value of variable.

__________________________________

Now in the prblem given

expression: 8a + b + 9

Variable are a , b

constant term is 9

8 is multiplied with variable a. so, 8 is coefficient of a.

b does not have any coefficient thus b coefficient can be taken as 1

as 1*b is equal to b.

Thus, coefficient in expression 8a + b + 9 is 8 and 1.

8 0

3 years ago

A ball is thrown upward from a height of 15ft with an initial upward velocity of 5ft/s. Use the formula h=-16t2(t Is squared)+ v

mote1985 [20]

Answer:

The ball has hit the ground in about 1.137 seconds.

Step-by-step explanation:

The ball has hit the ground when the height between the ball and the ground is 0. So we will be setting h equal to 0 and then solving this equation for t.

h=-16t^2+vt+s

v represents the initial velocity

s represents the initial height

v is given as 5ft/s.

s is given as 15ft.

Inputting these in result in:

h=-16t^2+5t+15

Now we are finding for what t's do we have h=0:

0=-16t^2+5t+15

Let's calculate the discriminant to predict how messy are answers are going to be.

Discriminant=b^2-4ac

Discriminant=(5)^2-4(-16)(15)