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DiKsa [7]
3 years ago
15

While Akira was visiting her sister in Weston, she bought a toy rocket that was marked down 50% from an original price of $40. I

f the sales tax in Weston is 5%, what was the total cost of the toy rocket?
Mathematics
1 answer:
maw [93]3 years ago
5 0

Answer:

me when I

Step-by-step explanation:

A

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Which set is closed under subtractionWhich answer choice shows that the set of irrational numbers is not closed under addition
vovikov84 [41]

Answer:

(a) Set of rational numbers

(b) \pi + (-\pi) = 0

Step-by-step explanation:

Solving (a): Set that is closed under subtraction

The solution to this is rational numbers.

For a set of number to be closed under subtraction, the following condition must be true

a -b = c

Where

a, b, c are of the same set.

The above is only true for rational numbers.

e.g.

1 - 2 = -1

5 - 5 = 0

\frac{1}{2} - \frac{1}{4} = \frac{1}{2}

4 - 2 = 2

The operations and the result in the above samples are rational numbers.

Solving (b): Choice not close under addition[See attachment for options]

As stated in (a)

For a set of number to be closed under subtraction, the following condition must be true

a -b = c

Where

a, b, c are of the same set.

In the given options (a) to (d), only

\pi + (-\pi) = 0 is not close under addition because:

\pi is irrational while 0 is rational

<em>In other words, they belong to different set</em>

8 0
2 years ago
Twenty customers bought the portable drill when it was on sale. Twelve of
vekshin1

Answer:

x+y = t

Step-by-step explanation:

7 0
3 years ago
Emilio compra 3,6 kg de manzanas a 1,45 euros el kilo ¿Cuánto pagara por las manzanas?
Ad libitum [116K]

Answer:

Emilio compra kg De manzanas a euros el kilo cuanto pagara por Las manzanas

3 0
3 years ago
To the girl who got it right is the one in the comments :D
Mama L [17]
Dang that’s nice free points thank you
3 0
2 years ago
I would like to know what is the value of z
Brrunno [24]

From the chord theorem we know that:


\overline{TW}\cdot\overline{UW}=\overline{CW}\cdot\overline{VW}


so:


\overline{TW}\cdot\overline{UW}=\overline{CW}\cdot\overline{VW}\\\\3\cdot\overline{UW}=x\cdot6\\\\3\cdot(\overline{TU}-\overline{TW})=x\cdot6\\\\&#10;3\cdot(x+7-3)=x\cdot6\\\\3\cdot(x+4)=x\cdot6\\\\3x+12=6x\\\\12=6x-3x\\\\3x=12\qquad|\div3\\\\\boxed{x=4}


Answer C.

3 0
3 years ago
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