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3 years ago

11

What is the height of an object thrown when time is 6 seconds? Also explain how u got your answer

1 answer:

nevsk [136]3 years ago

4 0

Answer:

$946.4\ m$

Step-by-step explanation:

Let

h(t) ---> the height of an object in meters

t ----> the time in seconds

we have

$h(t)=-2.6t^2+40t+800$

For t=6 sec

substitute in the quadratic equation the value of t and solve for h

$h(6)=-2.6(6)^2+40(6)+800$

$h(6)=946.4\ m$

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The sum of the ages of two siblings is 29. The brother is eleven more than half the age of his sister. How old is each sibling

mina [271]

Answer: the brother is 20 and the sister is 9

Step-by-step explanation:

29 - 11 = 18 18 divided by 2 is 9

9+11 is 20 the brothers age so the sister is 9

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3 years ago

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A raffle offers one $8000.00 prize, one $4000.00 prize, and five $1600.00 prizes. There are 5000 tickets sold at $5 each. Find t

Harman [31]

Answer:

The expectation is $E(1 )= -\$ 1$

Step-by-step explanation:

From the question we are told that

The first offer is $x_1 = \$ 8000$

The second offer is $x_2 = \$ 4000$

The third offer is $\$ 1600$

The number of tickets is $n = 5000$

The price of each ticket is $p= \$ 5$

Generally expectation is mathematically represented as

$E(x)=\sum x * P(X = x )$

$P(X = x_1 ) = \frac{1}{5000}$ given that they just offer one

$P(X = x_1 ) = 0.0002$

Now

$P(X = x_2 ) = \frac{1}{5000}$ given that they just offer one

$P(X = x_2 ) = 0.0002$

Now

$P(X = x_3 ) = \frac{5}{5000}$ given that they offer five

$P(X = x_3 ) = 0.001$

Hence the expectation is evaluated as

$E(x)=8000 * 0.0002 + 4000 * 0.0002 + 1600 * 0.001$

$E(x)=\$ 4$

Now given that the price for a ticket is $\$ 5$

The actual expectation when price of ticket has been removed is

$E(1 )= 4- 5$

$E(1 )= -\$ 1$

4 0

3 years ago

Can someone please answer this

Maksim231197 [3]

Answer:

A

Step-by-step explanation:

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In which group of numbers is each number a multiple of 4?

AVprozaik [17]

The answer is the first row 12, 24, 48, 96

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3 years ago

(4x²-5x+10)+ (6x³+7x²-9x+2) <br> MAKE THIS IN ALGEBRA TILES NONSENSE ANSWER REPORT

ruslelena [56]

Answer:

6x^3+11x^2-14x+12

Step-by-step explanation:

We just simply add like terms (terms with same power of x):

$6x^3+(4x^2+7x^2)+(-5x+-9x)+(2+10)$

Like terms are in brackets now

So you just simplify now to give you:

$6x^3+11x^2-14x+12$

8 0

2 years ago