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FinnZ [79.3K]
3 years ago
11

The length of a rectangular room is 5 feet more than its width. The perimeter of the room is

Mathematics
1 answer:
Roman55 [17]3 years ago
5 0

Answer:

\displaystyle 39 = W \\ 44 = L

Step-by-step explanation:

{L = W + 5

{166 = 2L + 2W

166 = 2[W + 5] + 2W

166 = 2W + 10 + 2W

166 = 10 + 4W

- 10 - 10

___________

\displaystyle \frac{156}{4} = \frac{4W}{4}

\displaystyle 39 = W[Plug this back into both equations above to get the length of 44 feet; \displaystyle 44 = L

I am joyous to assist you anytime.

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4. The population of Bay Village is 35,000 today. Every year the
frosja888 [35]

Answer:

Linear Model:   y(x)=35,000+750x

Step-by-step explanation:

In principle <em>Linear Models </em>are employed when we want to define a relationship between an independent and a dependent variable. <em>Linear Models</em> are also known as<em> Functions </em>, where one variable is expressed as a function of <em>at least one</em> other variable. The most common example would be a dependent variable y that is directly linked as a response to any changes of an independent variable x. The most common expression of such relationship would be y=ax where a is the relationship factor between y and x and is also known as the <em>slope </em>of the function (representing a rate of change of that function).

In this question we are told that the population of Bay Village today is 35,000. So we know this is our constant variable, lets call it  b.

Next we know that every year the population is increased by 750 people. So we know that our variable and thus our independent variable is every year which we shall call x and our fixed factor is the 750 increment which we will call a.  

From that we can conclude that:

<em>Year 1 Population: 35,000</em>

<em>Year 2 Population: 35,000 + 750 = 35,750</em>

<em>Year 3 Population: 35,750 + 750 = 36,500 </em>

And so on and so forth.<em> </em>

So we want to express the above as a Linear Model of the form:

<em> y = ax + b   </em>Eqn(1).

Thus from Eqn (1) and all information given (i.e. pluging in values) we finally obtain:

y(x)=35,000+750x

Which for every different value of  x (i.e. every year) we can obtain the new and increased population  y(x).

7 0
3 years ago
How many pints are in 1/2 cups.
Gala2k [10]
0.25 pints is the answer. I hope this helps!
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Given b (x) = StartAbsoluteValue x + 4 EndAbsoluteValue, what is b (negative 10)?
dmitriy555 [2]

Answer:

The answer is 6

Step-by-step explanation:

b(x) = |x+4|

b(-10) = |-10+4|

= |-6| (absolute value is always interested in +ve value)

= 6

4 0
2 years ago
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ANSWER ONLY IF YK IT IM GIVING CORRECT BRAINLIEST
wariber [46]

Answer:

-5(3x^3-1)

Step-by-step explanation:

-15x^3+5

Factor out -5

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4 0
3 years ago
How can i find area of abd triangle. .............​
Nataly [62]

Answer:

  6 square units

Step-by-step explanation:

The attachment shows the figure redrawn to scale, along with helpful semicircle O with diameter EB. Trig relations can be used to find the area of triangle ADB. The relation between an inscribed angle and its corresponding central angle is also helpful.

__

<h3>angles</h3>

Any right triangle can be inscribed in a semicircle whose diameter is the hypotenuse. Accordingly, we have constructed semicircle O whose center is the midpoint of EB. Hence its radius is EB/2 = 4/2 = 2.

Then angle EBD is an inscribed angle, hence half the measure of central angle EOD. Since ∠EOD is double the measure of ∠EBD, it is congruent to ∠EBC, which is also double the measure of ∠EBD. We have called the measure of this double angle θ. Its complement is the angle marked β.

<h3>segments</h3>

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The tangent ratio is ...

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  tan(β) = OD/AD   [eqn 1]

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These two relations can be solved for the measures of AD and BC, which we need in order to find the area of ΔADB.

<h3>area</h3>

Equation [eqn 1] tells us ...

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Equation [eqn 2] tells us ...

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The area of ΔADB is ...

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  Area = 1/2(OD)(AC) . . . . . . factors tan(β) cancel

The length of AC is given as 6, and we know OD = 2, so the area is ...

  Area = 1/2(2)(6) = 6

The area of triangle ADB is 6 square units.

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