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Goshia [24]
3 years ago
8

Hey, I need some help. Please solve the problem and give some steps.

Mathematics
1 answer:
Tatiana [17]3 years ago
4 0
8.4x10=84x 5.6=470.4
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<img src="https://tex.z-dn.net/?f=%20-%207%20%2B%20%20%5Cfrac%7Bf%7D%7B2%7D%20%3D%20%20-%201" id="TexFormula1" title=" - 7 + \f
vovikov84 [41]

First you had to add by seven from both sides of equation form.

-7+\frac{f}{2}+7=-1+7

Then simplify by equation.

\frac{f}{2}=6

Next, you multiply by two from both sides of equation form.

\frac{2f}{2}=6*2

And finally, simplify by equation.

6*2=12

2*6=12

12/6=2

12/2=6

f=12

Final answer: \boxed{f=12}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

3 0
3 years ago
Y= -5 + 2x<br> Is it positive or negative
frez [133]
Slope is positive with a y intercept at (0,-5) hope this helps
8 0
3 years ago
13) Ms. Dowd gave each student 6 liters of water to perform an experiment. Before starting the experiment, students had to verif
horrorfan [7]
The most precise measurement is C.
4 0
3 years ago
Read 2 more answers
A fence is to be built to enclose a rectangular area of 320 square feet. The fence along three sides is to be made of material t
sergeinik [125]

The dimensions of the enclosure that is most economical to construct are; x = 14.22 ft and y = 22.5 ft

<h3>How to maximize area?</h3>

Let the length of the rectangular area be x feet

Let the width of the area = y feet

Area of the rectangle = xy square feet

Or xy = 320 square feet

y = 320/x  -----(1)

Cost to fence the three sides = $6 per foot

Therefore cost to fence one length and two width of the rectangular area

= 6(x + 2y)

Similarly cost to fence the fourth side = $13 per foot

So, the cost of the remaining length = 13x

Total cost to fence = 6(x + 2y) + 13x

Cost (C) = 6(x + 2y) + 13x

C = 6x + 12y + 13x

C  = 19x + 12y

From equation (1),

C = 19x + 12(320/x)

C' = 19 - 3840/x²

At C' = 0, we have;

19 - 3840/x² = 0

19 = 3840/x²

19x² = 3840

x² = 3840/19

x = √(3840/19)

x = 14.22 ft

y = 320/14.22

y = 22.5 ft

Read more about Maximization of Area at; brainly.com/question/13869651

#SPJ1

8 0
2 years ago
Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions:
Nadusha1986 [10]
<h2>Explanation:</h2><h3>Part A.</h3>

The boundary lines of both inequalities will be dashed, because neither includes the "or equal to" case.

The first inequality solution area is bounded by a line with slope +5 and y-intercept +5. The solution area is above the line (y is greater than ...). Since the line rises steeply, the solution area looks to be to the left of the line. (It is shaded red on the attached graph.)

The second inequality solution area is bounded by a line with slope -1/2 and y-intercept +1. The solution area for this inequality is also above the line.

The solution area is where the two solution spaces overlap, in the quadrant to the upper left of the point where the lines intersect.

___

<h3>Part B.</h3>

The graph shows the point (-2, 5) to be in the solution space.

We can show this point satisfies both inequalities.

  • 5 > 5(-2)+5 ⇒ 5 > -5 . . . true
  • 5 > (-1/2)(-2) +1 ⇒ 5 > 2 . . . true

8 0
3 years ago
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