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3 years ago

-2n(5+n-8-3n) n =3 algebra

Mathematics

1 answer:

valina [46]3 years ago

8 0

Answer:

Step-by-step explanation:

$- 2n(5 + n - 8 - 3n) \\ n = 3 \\ - 2(3)(5 + 3 - 8 - 3(3)) \\ - 6(5 + 3 - 8 - 9)$

$- 6(8 - 8 - 9) \\ - 6( - 9) \\ = 54$

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After every ninth visit to a restaurant you receive a free beverage. After every twelfth visit you receive a free appetizer. If

-BARSIC- [3]

At the 72 visit they will get a free beverage and a free appetizer.

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4 years ago

Find the area of the following shape:

lara31 [8.8K]

9514 1404 393

Answer:

77 in²

Step-by-step explanation:

The area of a triangle is given by the formula ...

A = (1/2)bh

For your triangle, with its base of 14 inches and height of 11 inches, the area is ...

A (1/2)(14 in)(11 in) = 77 in²

_____

<em>Additional comment</em>

The side lengths added to the figure are incorrect. If we take the 11.5 to be correct, then the left side is about 15.3.

8 0

3 years ago

URGENT

Digiron [165]

Answer:

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Step-by-step explanation:

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3 years ago

Evaluate the double integral. . ∫∫ y sqrt(x^2-y^2) dA, R={(x,y)|0≤y≤x, 0≤x≤1}. R. . Please explain

polet [3.4K]

First we will evaluate: ( substitution: u = x² - y², du = - 2 y dy )
$\int\limits^x_0 {y \sqrt{ x^{2} - y^{2} } } \, dy= \\ \frac{-1}{2} \int\limits^x_0 { u^{1/2} } \, du =$
= $\frac{-1}{3} \sqrt{ (x^{2} - y^{2} ) ^{3} }$ ( than plug in x and 0 )
= $- \frac{1}{3} ( \sqrt{( x^{2} - x^{2}) ^{3} } - \sqrt{ (x^{2} -0 ^{2} ) ^{3} }$ =
= 1/3 x³ ( then another integration )
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4 0

3 years ago

The owner of a souvenir shop wants to order some custom printed mugs and t-shirts what is the price per t-shirt for 75 T-shirts

lara31 [8.8K]

Answer:

The price per t-shirts is $8.5.

Step-by-step explanation:

Let us assume the price per t- shirt = $m

The cost of 75 t-shirts = $637.50

Now, the total cost for 75 t-shirts = 75 x ( cost of 1 t-shirt)

⇒ $637.50 = 75 x ( m)

⇒ m = $637.50 / 75

or, m = 8.5

Hence, the price per t-shirts is $8.5.

5 0

3 years ago