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agasfer [191]
3 years ago
8

Geometry math question no Guessing and Please show work thank you

Mathematics
1 answer:
Dahasolnce [82]3 years ago
5 0

we can use

each interior angle formula of any regular polygons

\theta=\frac{180(n-2)}{n}

where

n is number of sides

theta is angle

we are given

\theta=157.5

now, we can plug it

157.5=\frac{180(n-2)}{n}

now, we can solve for n

1575n=1800\left(n-2\right)

n=16

so, option-C......Answer

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3 years ago
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A store marks up all of their merchandise by 70%. The floor price of a scarf is $117.25.
KiRa [710]

Answer:

  $68.97

Step-by-step explanation:

Markup is the difference between the cost of an item and the price at which it is sold:

  cost price + markup = selling price

Here, the markup is said to be 70%. The base for that percentage can be either the cost price or the selling price. The way this question is worded suggests the markup is 70% of the cost price.

So, we have ...

  cost price + 0.70 × cost price = selling price

or

  cost price × (1 + 0.70) = selling price

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Then, to find the cost price, we can divide by its coefficient in this equation. Doing that gives ...

  cost price = (selling price)/1.70

  cost price = $117.25/1.70 = $68.97

The store's purchase price before the markup for this item was $68.97.

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Boy paid $( 4X +7 ) for a beef roast and $ (2X -5 ) for 5 pounds of potatoes right and expression for the total amount you spent
just olya [345]
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V = lwh/3 (solve for h)
victus00 [196]

Answer:

\displaystyle V = \frac{lwh}{3} \rightarrow h = \frac{3V}{lw}

General Formulas and Concepts:

<u>Pre-Algebra</u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

<em />\displaystyle V = \frac{lwh}{3}<em />

<em />

<u>Step 2: Solve for </u><em><u>h</u></em>

  1. [Multiplication Property of Equality] Multiply 3 on both sides:                     \displaystyle V = \frac{lwh}{3} \rightarro 3V = lwh
  2. [Division Property of Equality] Divide lw on both sides:                               \displaystyle V = \frac{lwh}{3} \rightarrow h = \frac{3V}{lw}
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