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2 years ago

Please help meeeeeeeeeeeew

Mathematics

2 answers:

REY [17]2 years ago

8 0

Answer:

Step-by-step explanation:

area=(product of diagonals)/2=(10×8)/2=40 sq. units.

Paladinen [302]2 years ago

6 0

Answer:

40 sq. units

Step-by-step explanation:

<h3>Solution 1</h3>

The figure (kite) is symmetric and covers half of the area of rectangle with sides 8 units aby 10 units

The area of the rectangle:

A = 8*10 = 80 sq. units

The area of the kite:

A = 1/2*80 = 40 sq. units

<h3>Solution 2</h3>

Split the kite into two triangles and calculate their area and add up

Triangle DCB has b = 8, h = 2 and has area:

A = 1/2*8*2 = 8 sq. units

Triangle DAB has b = 8, h = 8 and has area:

A = 1/2*8*8 = 32 sq. units

Total area:

8 + 32 = 40 sq. units

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Is y=x squared + 36 a function

Kay [80]

Answer:

yes

Step-by-step explanation:

7 0

3 years ago

An owner of a key rings manufacturing company found that the profit earned (in thousands of dollars) per day by selling n number

vovikov84 [41]

Answer:

The number of key rings sold on a particular day when the total profit is $5,000 is 4,000 rings.

Step-by-step explanation:

The question is incomplete.

An owner of a key rings manufacturing company found that the profit earned (in thousands of dollars) per day by selling n number of key rings is given by

$P=n^2-2n-3$

where n is the number of key rings in thousands.

Find the number of key rings sold on a particular day when the total profit is $5,000.

We have the profit defined by a quadratic function.

We have to calculate n, for which the profit is $5,000.

$P=n^2-2n-3=5\\\\n^2-2n-8=0$

We have to calculate the roots of the polynomial we use the quadratic equation:

$n=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\n= \frac{-2\pm\sqrt{4-4*1*(-8)}}{2}= \frac{-2\pm\sqrt{4-32}}{2} = \frac{-2\pm\sqrt{36}}{2} =\frac{-2\pm6}{2} \\\\n_1=(-2-6)/2=-8/2=-4\\\\n_2=(-2+6)/2=4/2=2$

n1 is not valid, as the amount of rings sold can not be negative.

Then, the solution is n=4 or 4,000 rings sold.

7 0

3 years ago

What is –36° converted to radians?

Stells [14]

let's recall that there are 180° in π radians, thus

$\bf \begin{array}{ccll} degrees&radians\\ \cline{1-2} 180&\pi \\ -36&x \end{array}\implies \cfrac{180}{-36}=\cfrac{\pi }{x}\implies -5=\cfrac{\pi }{x}\implies x=\cfrac{\pi }{-5}\implies x=-\cfrac{\pi }{5}$