2 years ago

Select the ordered pair that is a solution to the function. (A point on the line.)?

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

6 0

Answer:

-7

Step-by-step explanation:

first you plug in f(3) in the x so -2(3)= -6

then -6 - 1 = -7

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The sum of a number and its reciprocal is 41/20. Find the number. smaller value larger value

Natali [406]

Step-by-step explanation:

Let the number is x. Its reciprocal will be 1/x. According to given condition, we get :

$x+\dfrac{1}{x}=\dfrac{41}{20}\\\\\dfrac{x^2+1}{x}=\dfrac{41}{20}\\\\20x^2+20=41x\\\\20x^2-41x+20=0$

It is a quadratic equation. The values of x are :

$20x^2-25x - 16x+ 20 =0\\\\5x(4x - 5) -4( 4x - 5) = 0\\\\(5x-4)(4x-5)=0\\\\5x-4=0\ \text{and}\ (4x-5)=0\\\\x=\dfrac{4}{5}\ \text{and}\ x=\dfrac{5}{4}$

The smaller number is 4/5 and the larger number is 5/4.

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2 years ago

How much higher is 500m than 400m

zaharov [31]

Answer:

100m

Step-by-step explanation:

just subtract them from each other

500m

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100m

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2 years ago

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Complete the following statement. Round to the nearest hundredth .

RSB [31]

f(x) = 3/(x + 2) - √x - 3

f(7) = 3/(7 + 2) - √7 - 3

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2 years ago

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Estimate:6
Answer:6.3

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3 years ago

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