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Gemiola [76]
3 years ago
15

What minus 31 equals to 213

Mathematics
1 answer:
faltersainse [42]3 years ago
7 0

Answer:

244?

Step-by-step explanation:

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2870 miles and 210 miles per hour

Step-by-step explanation:

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Find the value of y.​
Bess [88]

Answer:

=6√3 the third option.

Step-by-step explanation:

We can use the Pythagoras theorem to find the value of y. We need two equations that include y.

a²+b²=c²

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x²+y²=12²

x²=144 - y².........i (This is the first equation)

We can also express it in another way but let us find the perpendicular dropped to c.

perpendicular²= x²-3²=x²-9 according to the Pythagoras theorem.

y²=(x²-9)+9²

y²=x²+72

x²=y²-72....ii( this is the second equation

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y=√108

In Surd form √108=√(36×3)=6√3

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Rashaan says that -6 divided by 2 equals -3 which multiplication expression can be used to check his answer
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