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3 years ago

Solve for x help pleaseeeee

Mathematics

2 answers:

Zolol [24]3 years ago

8 0

X-5=40 x=45 can I get the crown?

OleMash [197]3 years ago

7 0

Answer: 42.5

Why? (X+45)+(x-5)+55=180
2x+95=180
2x= 85
X= 42.5

Hope this helps

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Step-by-step explanation:

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3 years ago

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When 18 gallons of water are pumped into an empty tank, the tank is filled to three fourths of its capacity. How many gallons of

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Answer:

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Step-by-step explanation:

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3 years ago

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Let f(x)=x+a/x+b such that f(f(1)=0 & f(2)=-3 then a&b resctivily are.

Yuliya22 [10]

Answer:

The value of a = - 1 , And b = $\frac{ - 7 }{3}$

Step-by-step explanation:

Given as :

Function f(x) = $\frac{(x + a)}{(x + b)}$

And f(f(1)) = 0 And f(2) = - 3

Now For , x = 2 , y = - 3

I.e f(2) = $\frac{(2 + a)}{(2 + b)}$

or, - 3 = $\frac{(2 + a)}{(2 + b)}$

I.e 2 + a = - 6 - 3b

Or, a + 3b = - 8 ....... 1

Again f(f(1)) = 0

So, $\frac{(1 + a)}{(1 + b)}$ = 0

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∴ a = - 1

So , put htis value of a i n eq 1 , we get value of b

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Or, 3b = - 7

∴ b = $\frac{ - 7 }{3}$

Hence The value of a = - 1 , And b = $\frac{ - 7 }{3}$ Answer

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3 years ago