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lakkis [162]
3 years ago
7

W Evaluate the following expressions for x = 2. -9.2(4 – x) -9.2(4 - (2) -9.2(2)

Mathematics
2 answers:
xenn [34]3 years ago
8 0

Answer:

-18.4

Step-by-step explanation:

-9.2(4 – x)

Let x=2

-9.2(4 – 2)

Parentheses first

-9.2(2)

Multiply

-18.4

Fed [463]3 years ago
4 0

Answer:

- 18.4

Step-by-step explanation:

The given expresion is

- 9.2(4 - x)

We want to evaluate this expression for x=2.

We substitute x=2 into the expression.

This means that, we will put 2 wherever we see x in the given expresion.

This will give us:

- 9.2(4 - 2)

Simplify the parenthesis

- 9.2(2)

=  - 18.4

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Answer:

The probability of a person going to work by car is 48

And the probability of different way is 52

Step-by-step explanation:

As it's represented in the table above, there are 48 percent employees use cars as their transportation to work, and to find the rest sum all the probability of other transportation together which will give you 52 percent.

5 0
2 years ago
Solve the Differential equation (x^2 + y^2) dx + (x^2 - xy) dy = 0
natita [175]

Answer:

\frac{y}{x}-2ln(\frac{y}{x}+1)=lnx+C

Step-by-step explanation:

Given differential equation,

(x^2 + y^2) dx + (x^2 - xy) dy = 0

\implies \frac{dy}{dx}=-\frac{x^2 + y^2}{x^2 - xy}----(1)

Let y = vx

Differentiating with respect to x,

\frac{dy}{dx}=v+x\frac{dv}{dx}

From equation (1),

v+x\frac{dv}{dx}=-\frac{x^2 + (vx)^2}{x^2 - x(vx)}

v+x\frac{dv}{dx}=-\frac{x^2 + v^2x^2}{x^2 - vx^2}

v+x\frac{dv}{dx}=-\frac{1 + v^2}{1 - v}

v+x\frac{dv}{dx}=\frac{1 + v^2}{v-1}

x\frac{dv}{dx}=\frac{1 + v^2}{v-1}-v

x\frac{dv}{dx}=\frac{1 + v^2-v^2+v}{v-1}

x\frac{dv}{dx}=\frac{v+1}{v-1}

\frac{v-1}{v+1}dv=\frac{1}{x}dx

Integrating both sides,

\int{\frac{v-1}{v+1}}dv=\int{\frac{1}{x}}dx

\int{\frac{v-1+1-1}{v+1}}dv=lnx + C

\int{1-\frac{2}{v+1}}dv=lnx + C

v-2ln(v+1)=lnx+C

Now, y = vx ⇒ v = y/x

\implies \frac{y}{x}-2ln(\frac{y}{x}+1)=lnx+C

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3 years ago
He prism below, the shortest distance between point B and point E is 20.4 inches, and the shortest distance from point D and poi
JulijaS [17]
The answer is probably C
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3 years ago
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What is the relationship between 8.76×106 and 8.76×102 ? Select from the drop-down menus to correctly complete the statement. 8.
kvasek [131]
8.76 x 10^6 is 10,000 times greater than 8.76 x 10^2.
3 0
3 years ago
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A certain library assesses fines for overdue books as follows. On the first day that a book is overdue, the total fine is $0.10.
Irina18 [472]

Answer:

The answer is $0.70.

Step-by-step explanation:

On the first day that a book is overdue, the total fine is $0.10.

For each additional day that the book is overdue, the total fine is either increased by $0.30 or doubled, whichever results in the lesser amount.

So, fine on 1st day overdue = $0.10

Fine on 2nd day overdue = 0.10\times2=0.20 (this is lesser than the value if $0.30 is added)

Fine on 3rd day overdue = 0.20\times2=0.40 (this is lesser than the value if $0.30 is added)

So, fine on 4th day overdue will be = 0.40+0.30=0.70 dollars. (here doubling will give higher value)

So, the answer is $0.70.

3 0
3 years ago
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