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12345 [234]
2 years ago
15

Can someone help me? ​

Mathematics
1 answer:
Oliga [24]2 years ago
5 0
52-13=39
39/52x100=75
The percent of markdown: 75%
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Liam Had 250. Then, he and his classmate buy present for their teacher, evenly splitting the P cost among the 24 of them. How mu
tamaranim1 [39]
If it was just the splitting It would be
Let L be the amount he has left
L= 250-( P/24 )
8 0
3 years ago
Dana has 800 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed are
grin007 [14]

Answer:

Perimeter of rectangle states that total distance around the outside, which can be found by adding together the length of each side.

As per the given statement, Dana has 800 yards of fencing to enclose a rectangular area.

Therefore, perimeter of rectangle = 800 yards.

Perimeter(P) of rectangle is given by :

P = 2(x+y) where x is the length and y is the width of the rectangles respectively.

Then,

2(x+y) = 800

Divide both sides by 2 we get;

x+y =400

or

y = 400 -x            .....[1]

We know, the area(A) of rectangle is given by

A = xy                   .....[2]

Substitute equation [1] into [2] we get;l

A = x(400-x)

using distributive property a\cdot (b+c) = a\cdot b+ a\cdot c

A = 400x -x^2            

or

A =-x^2+400x    ......[3]

To maximize the enclosed area.

For a quadratic function in standard form y =ax^2+bx+c , the axis of symmetry is a vertical line given by;  

x = -\frac{b}{2a}

Then; we have from equation [3]

a = -1 and b = 400

By axis of symmetry;

x = -\frac{b}{2a} = -\frac{400}{2 \cdot -1} =\frac{400}{2} = 200

Substitute in equation [1] to solve for y:

y = 400 - 200 = 200

The dimensions of the rectangle that maximize enclosed area are:

x = 200 units and y = 200 units.

Maximum area = 200 \times 200 = 40,000 square units.

We can say that maximum area of rectangle will always be a square



4 0
2 years ago
Write an equation of the line that passes through the points (-2,-3) and (1,-3)
Nastasia [14]

I learned this so many times but I forgot how to do it exactly.

But looking at this, you can already determine that y is equal to -3 so couldn't you use that as an answer.

4 0
2 years ago
Read 2 more answers
Simplify:
Nesterboy [21]

Answer:

C

Step-by-step explanation:

\sqrt{3} times \sqrt{3} = 3 and \sqrt{3} times x = \sqrt{3}x

So that means that answer is 3+\sqrt{3}x which is C

3 0
3 years ago
Alzena has 38 cent, Ariana has 52cent , They want to buy a biscuit that costs $1.00, how much more money do I need? Use a number
jasenka [17]

Answer:

30+50=80 2+8=10 80+10=90 so they need 10 more

Step-by-step explanation:

8 0
3 years ago
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