Please help me with this problem

5i/x-5i what is the simplest form?

xenn [34]

51/x - 5i

this is the answerrrr

7 0

3 years ago

Solve 0 = 4x2+12x+9.

mars1129 [50]

Answer:

Exact Form:

x = − 3/ 2

Decimal Form:

x = − 1.5

Mixed Number Form:

x = − 1 1/ 2

Step-by-step explanation:

4 0

3 years ago

Delia is a graphic designer who charges an hourly rate. She made the graph to show her total earnings for various numbers of hou

stich3 [128]

Answer:

approximately 7 hours

see the explanation

Step-by-step explanation:

The picture of the question in the attached figure

Let

x ----> the time worked in hours

y ----> the amount earning in dollars

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u><em>and the line passes through the origin</em></u>

so

In this problem we have a proportional relationship

step 1

Find approximately how many hours would it take Delia to earn $250 ?

Looking at the graph

For y=$250 The value of x is approximately 7 hours

see the attached figure N 2

step 2

Find the exact value

from the graph take the point (5,175)

Find the value of k

$k=\frac{y}{x}$ ----> $k=\frac{175}{5}=\$35\ per\ hour$

The linear equation is

$y=35x$

For y=$250

substitute

$250=35x$

solve for x

$x=7.14\ hours$

8 0

3 years ago

Greenfield village is spread across 240 acres of land. Only 37% of the land is used for the exhibits, while the rest of the land

irinina [24]

88.8 acres are used for exhibits

Step-by-step explanation:

Given

Total area of Greenfield = 24 acres

Percentage of lad for exhibits = 37%

Now,

$Acres\ used\ for\ exhibits = 37\%\ of\ 240\\= \frac{37}{100} * 240\\=0.37*240\\=88.8\ acres$

Hence,

88.8 acres are used for exhibits

Keywords: Percentage, percent

Learn more about percentage at:

#LearnwithBrainly

6 0

3 years ago

Estimate the square root to the nearest integer and tenth square root of 8

Sever21 [200]

Answer:

√

8

≈

3

Explanation:

Note that:

2

=

4

<

8

<

9

=

3

2

Hence the (positive) square root of

8

is somewhere between

2

and

3

. Since

8

is much closer to

9

=

3

2

than

4

=

2

, we can deduce that the closest integer to the square root is

3

.

We can use this proximity of the square root of

8

to

3

to derive an efficient method for finding approximations.

Consider a quadratic with zeros

3

+

√

8

and

3

−

√

8

:

(

x

−

3

−

√

8

)

(

x

−

3

+

√

8

)

=

(

x

−

3

)

2

−

8

=

x

2

−

6

x

+

1

From this quadratic, we can define a sequence of integers recursively as follows:

⎧

⎪

⎨

⎪

⎩

a

0

=

0

a

1

=

1

a

n

+

2

=

6

a

n

+

1

−

a

n

The first few terms are:

0

,

1

,

6

,

35

,

204

,

1189

,

6930

,

...

The ratio between successive terms will tend very quickly towards

3

+

√

8

.

So:

√

8

≈

6930

1189

−

3

=

3363

1189

≈

2.828427

8 0

3 years ago