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vova2212 [387]
3 years ago
8

A jewellery shop is having a sale.

Mathematics
1 answer:
elena-s [515]3 years ago
3 0

Step-by-step explanation:

if 70% of the orice is 420 then

70x = 100 × 420

70x = 42000

x = 42000/70

x = 600

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Find the length of GF
Cerrena [4.2K]
By the Pythagorean Theorem:

The square of the hypotenuse (longest side) of a right triangle is equal to the sum of the side lengths squared, or mathematically:

h^2=x^2+y^2, where x and y are the side lengths and h is the length of the hypotenuse, in this case:

9.4^2=6.8^2+GF^2

GF^2=9.4^2-6.8^2

GF^2=42.12

GF=√42.12 units

GF≈6.49 units (to nearest hundredth of a unit)
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3 years ago
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Mark and peter went to an arcade where the machines took tokens. Marilk played 9 games of ping pong and 5 games of pinball, usin
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Answer:

9x + 5y = 29 ........... (1) and

3x + y = 7 ........... (2)

Each game of ping pong requires 1 number of token and each game of pinball requires 4 number of tokens.

Step-by-step explanation:

Let, each game of ping pong requires x number of tokens and each game of pinball requires y number of tokens.

So, from the given conditions we can write

9x + 5y = 29 ........... (1) and

3x + y = 7 ........... (2)

Now, solving equations (1) and (2) we get,

9x + 5(7 - 3x) = 29

⇒ 35 - 6x = 29

⇒ 6x = 6

⇒ x = 1 token.

Now, putting x = 1 in equation (2) we get,

3 + y = 7

⇒ y = 4 tokens.

So, each game of ping pong requires 1 number of token and each game of pinball requires 4 number of tokens. (Answer)

6 0
3 years ago
What fraction is equivalent to - 3/2
Varvara68 [4.7K]

Answer: -1 1/2

3/2= 1 1/2 just make it a negative

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Answer:

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Step-by-step explanation:

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My name is Ann [436]

Answer: plug in the top equation for what y equals into the bottom equation and then that should be a easy way to solve this

Step-by-step explanation:

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3 years ago
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