2 years ago

Evaluate for m = 2 and n = –3 a) 5m – n b) n2 ÷ m2

Mathematics

1 answer:

nataly862011 [7]2 years ago

6 0

Answer:

Step-by-step explanation: trust

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BBC News had 6,632,512 viewers for its evening bulletin. What is the place value of the 3?

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6,632,512

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3 years ago

Which graph represents the compound inequality? n<-2 or n > 4

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2 years ago

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2 years ago

PLEEEEEEEAAAAAAASSSSSSSSSSEEEEEEEEEEE help me!!!!!!!!!!

defon

Answer:

$\boxed{\sf \ \ \ \dfrac{18}{(x-7)(x+12)(x+30)} \ \ \ }$

Step-by-step explanation:

hello,

first of all we will study the quadratic expressions

we can write that, (the different answers provide good clues :-) )

$x^2+5x-84=(x-7)(x+12)$

and

$x^2+23x-210=(x-7)(x+30)$

so first of all as we cannot divide by 0 we need to take x different from 7, -12 and -30 and then we can write

$\dfrac{1}{x^2+5x-48}-\dfrac{1}{x^2+23x-210}=\dfrac{1}{(x-7)(x+12)}-\dfrac{1}{(x-7)(x+30)}\\\\=\dfrac{(x+30) -(x+12)}{(x-7)(x+12)(x+30)}=\dfrac{x+30-x-12}{(x-7)(x+12)(x+30)}\\\\=\dfrac{18}{(x-7)(x+12)(x+30)}$

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3 years ago

Elizabeth and Markus are playing catch. Elizabeth throws the ball first. The height of the ball can be modeled by the equation h

astra-53 [7]

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Step-by-step explanation:

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3 years ago