3 years ago

Write an expression equivalent to 5x squared-15x

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

5 0

The answer is 5(x squared-3x)
It is distributive property

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8 miles is approximately equal to 6 km. How many km are equal to 28 miles? How many miles are equal to 42 km?

Pani-rosa [81]

1 mile = about 1 1/3 km because 8/6 = 1 1/3
so 28 times 1 1/3 = 37 1/3 (first answer)

42 / 6 = 7
7 miles are in 42 km (2nd answer)

3 0

3 years ago

Help!!<br><br> which expression is equivalent to (m^5 n /pq^2) ^4

lana66690 [7]

$\text{Use:}\\\\\left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\(a\cdot b)^n=a^n\cdot b^n\\\\(a^n)^m=a^{nm}\\\\......................................................\\\\\left(\dfrac{m^5n}{pq^2}\right)^4=\dfrac{(m^5n)^4}{(pq^2)^4}=\dfrac{(m^5)^4n^4}{p^4(q^2)^4}=\dfrac{m^{20}n^4}{p^4q^8}$