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3 years ago

Find the value of x.

Mathematics

2 answers:

matrenka [14]3 years ago

7 0

The correct value of X is 115.

Hope this helps you! :)

USPshnik [31]3 years ago

4 0

Answer:

115

Step-by-step explanation:

the the answer is the same thing on the other side of B

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You buy a calculator for $65 A 6% sales tax added.

exis [7]

Answer:

68.9

Step-by-step explanation:

This can be solved by finding 6% of 65 first. 6% of 65 is 3.9, so I can add 3.9 to 65 and get 68.9

6 0

4 years ago

For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you sub

LekaFEV [45]

Isolate x in 2nd equation...

-x - 2y = -10 ....add 2y to both sides
-x = 2y - 10 ...multiply by -1 to make x positive
x = -2y + 10 <== u would sub in -2y + 10 in for x in the 1st equation

7 0

3 years ago

Read 2 more answers

a farmer wants to fence in a rectangular plot of land adjacent to the north wall of his barn. no fencing is needed along the bar

xenn [34]

The constraint for the maximum enclosed area is the amount the farmer is

willing to spend on fencing.

The width of the plot that will give the most area, y = 83. $\underline{\overline 3}$ feet

The length of the plot that will give the most area, y = 125 feet

Reasons:

The given parameters are;

The cost of fencing per foot = $20

The maximum amount the farmer is willing to spend = $5000

Number of sides of fencing = 3 sides

Cost of the west side of the = Split with neighbor

Solution:

Let, y, represent the length of the fence, and let x represent the width of

the fence, we have;

Length of fence required = y + 2·x

Cost of the fence = 20·y + 20·x + (20÷2)·x = 20·y + 30·x

Therefore;

Maximum amount to be spent on the fence, 5000 = 20·y + 30·x

$\therefore y = \dfrac{5000 - 30 \cdot x}{20} = 250 - \dfrac{3}{2} \cdot x$

$y = \mathbf{250 - \dfrac{3}{2} \cdot x}$

Area of a rectangle = Length × Width

The enclosed rectangular area of the fencing, A = y × x

$\therefore A = \left(250 - \dfrac{3}{2} \cdot x\right) \cdot x = 250 \cdot x - \dfrac{3}{2} \cdot x^2$

$\therefore A = -\mathbf{ \dfrac{3}{2} \cdot x^2 + 250 \cdot x}$

The leading coefficient of the quadratic function of the area is negative,

therefore, the function only has a maximum point.

At the point of the most area, the slope, $\dfrac{dA}{dx} = 0$

Finding the value of x at the maximum point, we get;

$\dfrac{dA}{dx} = \mathbf{ \dfrac{d}{dx} \left( 250 \cdot x - \dfrac{3}{2} \cdot x^2\right)} = 250- 3 \cdot x = 0$

Therefore;

$\mathrm{ The \ width \ of \ the \ plot \ that \ will \ enclose \ the \ area}, \ x = \dfrac{250}{3} \ feet = \underline{83.\overline 3 \ feet}$

$\mathrm{ The \ length \ of \ the \ plot \ that \ will \ enclose \ the \ area}, \ y = 250 - \dfrac{3}{2} \times \dfrac{250}{3} = 125$

The length of the plot that will give the most area, y = 125 feet

Learn more here:

brainly.com/question/16337916

brainly.com/question/16545343

6 0

3 years ago

34 = 6d − 8 I do not get how to solve this in a simple way

saul85 [17]

Answer: 7

Explanation: plus 8 to 34 so you have
42 = 6d and then divide 42 by six and 6d divided by 6 too you get 7 = d

4 0

3 years ago

A spinner is divided into 10 equal parts and numbered from 1 through 10. What is the probability of spinning a number less than

r-ruslan [8.4K]

You can count from 6-10 and you would get c) 5/10

5 0

3 years ago