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storchak [24]
4 years ago
8

Rewrite as a simplified fraction.

Mathematics
1 answer:
Mnenie [13.5K]4 years ago
7 0

Answer:

\bold{x = \dfrac{8}{9}}

Step-by-step explanation:

We have to rewrite the below as simplified fraction.

\large{0.\overline{8} = {?}}

Solution:

Let x =0.\overline 8 which means x =0.888888.......

Here a bar over 8 means that there the given decimal value is non terminating and there are a large numbers of 8 present after the decimal.

To solve the given non terminating decimal as fractions, we will have to eliminate the bar term from the given value.

So, we can rewrite x as:

x =0.8\overline8 ......(1)

Now, let us multiply the above with 10.

10x = 0.8\overline 8 \times 10\\\Rightarrow 10 x= 8.\overline8 ....... (2)

Now, let us subtract (1) from (2):

10x-x=8.\overline8 - 0.\overline8\\\Rightarrow 9x = 8\\\Rightarrow \bold{x = \dfrac{8}{9}}

So, in simplified fractions:

\large{0.\overline{8} =  \bold{\dfrac{8}{9}}}

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University trailer sales company sold 356 utility trailers during a recent year. If the gross annual sales for the company was $
Elza [17]

Answer:

The average selling price of each trailer was nearly $922

Step-by-step explanation:

University trailer sales company sold 356 utility trailers during a recent year.

If the gross annual sales for the company was $328,132.

For the average selling price of each trailer, we will divide <em>the gross annual sales </em>by <em>utility </em><em>trailers.</em>

= 328132 ÷ 356

= 921.7 ≈ 922

Thus, The average selling price of each trailer was nearly $922

<u>-</u><u>TheUnknownScientist</u>

4 0
3 years ago
Como Determinar a equação da reta que passa pelos pontos A(-1, -2) e B(5,2)
Komok [63]

Answer:

A equação da reta é dada por: y = \frac{2}{3}x - \frac{4}{3}

Step-by-step explanation:

Equação de uma reta:

A equação de uma reta tem o seguinte formato:

y = ax + b

Em que a é o coeficiente angular e b é o coeficiente linear.

Coeficiente angular:

Com posse de dois pontos, o coeficiente angular é dado pela mudança em y dividida pela mudança em x.

A(-1, -2) e B(5,2)

Mudança em y: 2 - (-2) = 2 + 2 = 4

Mudança em x: 5 - (-1) = 5 + 1 = 6

Coeficiente angular: m = \frac{4}{6} = \frac{2}{3}

Então:

y = \frac{2}{3}x + b

Coeficiente linear:

Substituindo um ponto na equação, encontra-se o coeficiente linear.

B(5,2)

Quando x = 5, y = 2. Então:

y = \frac{2}{3}x + b

2 = \frac{2}{3}5 + b

b = 2 - \frac{10}{3} = \frac{6}{3} - \frac{10}{3} = -\frac{4}{3}

Então:

y = \frac{2}{3}x - \frac{4}{3}

8 0
3 years ago
The concentration C (in mg/dl), of an antibiotic in a patient’s bloodstream per hour, t, is given by: c(t) = (50t)/(t^2+25) In o
NARA [144]

Answer:

Step-by-step explanation:

<u>Functions </u>

The problem describes a function that expresses the concentration of an antibiotic in mg/dl vs time in hours as:

\displaystyle c(t)=\frac{50\ t}{t^2+25}

We need to find the first value of t such that

\displaystyle c(t)\geq 4

It means that

\displaystyle \frac{50\ t}{t^2+25}\geq 4

Operating with the inequality

\displaystyle 50\ t\geq 4\ t^2+100

Rearranging and dividing by 2, we have a polynomial inequality:

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Factoring

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There are two possible values for t, both valids because they are positive

\displaystyle t=\frac{5}{2}=2.5, \ t=10

We need to find the first value, i.e.

t=2.5 \ hours

Now for the graphic method, we plot the graph for the function and a horizontal line at c=4 to find the values of t.

The graph is shown in the image provided below. We can see both values where the funcion and C=4 intersect. Both values coincide with the previously analitically found values

4 0
3 years ago
Slove for x 2m-nx=x+4
Svetach [21]
Answer:

Therefore, x = -2m+4/-n-1
6 0
3 years ago
What is 15% or $48.32?
Alexxandr [17]
What I got is this: 15% of $48.32 = $7.25
5 0
3 years ago
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