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2 years ago

True or false ? Is f(x) a function

Mathematics

2 answers:

tatuchka [14]2 years ago

5 0

Yes its a function because its x value only has 1 y value

Westkost [7]2 years ago

5 0

Answer:

true

Step-by-step explanation:

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OLEGan [10]

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2 years ago

Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in. To the nearest tenth of a percent, wha

Vinil7 [7]

Answer

Find out the percent error in Annie's estimate .

To prove

Formula

$Percentage\ error = \frac{error\times 100}{exact\ value}$

As error = approx value - exact value

As given

Annie estimates that the height of a bookcase is 78.25 in.

The actual height is 75.50 in.

approx value = 78.25 in.

actual value = 75.50 in.

error = 78 .25 - 75 .50

= 2.75

put in the formula

$Percentage\ error = \frac{2.75\times 100}{75.50}$

$Percentage\ error = \frac{27500}{7550}$

Percentage error = 3.64 % (approx)

Therefore the Percentage error be 3.64 % (approx).

6 0

3 years ago

Read 2 more answers

POR FAVORRRRRRR NECESITO RÁPIDO LA RESPUESTA 3m (4x-5) - 20x + 25

nalin [4]

Answer:

12mx-15m-20x+25 Hope this helps!

Step-by-step explanation:

4 0

3 years ago

Find the value of -(-2x+1)=9-14x

Elodia [21]

2x - 1 = 9 - 14x

16x - 1= 9

16x = 10

x = 10/16
x= 5/8 is the answer

7 0

2 years ago

Solve for x and y in the system of equation 3x²+4y=17 2x²+5y=2 I'll mark brainliest

Novay_Z [31]

Answer:

$x=\pm \sqrt{11} \\y=-4.$

Step-by-step explanation:

$\left \{ {{3x^2+4y=17} \atop {2x^2+5y=2}} \right. \\\\Then\\\\\left \{ {{2 \times (3x^2+4y)=2 \times 17} \atop {3\times(2x^2+5y)=3\times2}} \right. \\\\\left \{ {{6x^2+8y=34 \quad (1)} \atop {6x^2+15y=6\quad (2)}} \right.\\\\(1)-(2) \Rightarrow -7y=28 \Rightarrow y =-4.\\Since \: \: 2x^2+5y=2 \Rightarrow 2x^2=2-5y\\\Rightarrow 2x^2=2+20=22\\\Rightarrow x^2=22:2=11\\\Rightarrow x=\pm \sqrt{11}.$

7 0

2 years ago