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Alenkinab [10]
3 years ago
6

What property is shown 7+(8+12)=7+12

Mathematics
2 answers:
irga5000 [103]3 years ago
7 0
Associative property of addition I think or commutive property of addition
vladimir2022 [97]3 years ago
3 0
Associative property of addition
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This formula converts a UK shoe size to a Japanese shoe size. Japanese size = UK size + 19
LuckyWell [14K]

Yuto wears a Japanese size 29.5.

By the problem,

Japanese size = UK size + 19

Or, 29.5 = UK size +19

Or, UK size = 29.5-19 = 10.5

Yuto’s shoe size would be 10.5 in the UK

6 0
3 years ago
The sum of the measures of the interior angles of a regular polygon is 5400. find the number of sides in the polygon.
Svet_ta [14]
<span>Sum of Interior Angles = (Number of Sides -2) • 180 degrees
</span>
<span>Number of Sides = [Sum of Interior Angles / 180 degrees] +2

</span><span>Number of Sides = (5,400 / 180) +2

</span><span>Number of Sides = 32

Source:
http://www.1728.org/polygon.htm

</span>
4 0
3 years ago
f(x)= 1/x, vertically stretched by a factor of 7, reflected in the y-axis, translated 5 units to the right, and translated 3 uni
Harman [31]

Answer:

-7/(x-5) - 3

Step-by-step explanation:

First off, to reflect an equation in the y axis, just multiply by -1. Now that it is reflected, to stretch an equation by a factor of 7, multiply it by 7. Now we have -7/x.

Then, to move an equation down by 3 units, simply subtract it by 3. Now we have -7/x - 3.

Lastly, since you want to translate it 5 units to the left, you want the equation to be undefined at x = 5 (because originally it is undefined at x = 0). To do that, set the denominator to x - 5. We arrive at our answer: -7/(x-5) - 3.

8 0
3 years ago
A particular style of sunglasses costs the retailer $70 $⁢70 per pair. At what price should the retailer mark them so he can sel
Alexxx [7]

After the 10% discount on marked price (P), the selling price is ...

... P×(100% -10%) = 0.90P

After a markup off 35% on cost, the value is

... $70×(100% +35%) = 1.35×$70 = $94.50

The retailer wants these two values to be equal:

... 0.90P = $94.50

... P = $94.50/0.90 = $105.00 . . . . . divide by the coefficient of P

The marked price should be $105.00.

6 0
3 years ago
Solve the following system of equations and show all work. <br><br> y = -x^2 + 4<br> y = 2x + 1
Pavel [41]
-x^2 + 4 = 2x + 1
-x^2 - 2x + 4 - 1 = 0
-x^2 - 2x + 3 = 0
(x + 3)(-x + 1)= 0

x + 3 = 0           -x + 1 = 0
x = -3                -x = -1
                          x = 1

so x = -3 and x = 1
8 0
3 years ago
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