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marusya05 [52]
3 years ago
11

Marty’s dog can run 3 miles in 20 minutes. What is the dog’s speed in miles per hour?

Mathematics
2 answers:
stich3 [128]3 years ago
7 0
9mph because 20 minutes time 3 is one hour so multiply 3 by 3 to get 9
Gnom [1K]3 years ago
5 0

Answer:

9m

Step-by-step explanation:

easy 20 20 20 each 3 m

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Can you tell me how to factorise 6b+24bc
Kamila [148]
When we factorise an expression, we are looking for simple factors that multiply to get the original expression. Usually it is very natural to factorise something like a quadratic in x. For example:

x^2 + 3x + 2 = (x+1)(x+2)

But there are other situations where factorisation can be applied. Take this quadratic:

x^2 - 9x = x(x-9)

This second example is closer to the question in hand. Just like x was a common factor to both x^2 and -9x, we are looking for a common factor to both 6b and 24bc. The common factor is 6b.

Hence 6b + 24bc = 6b(1 + 4c).

I hope this helps you :)
3 0
2 years ago
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alexandr1967 [171]
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3 years ago
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lidiya [134]

Answer:

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(4x+3)(5x+2)

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2 years ago
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(4x + 4) (5x + 2) =
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