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3 years ago

Which table represents a linear function?

Mathematics

2 answers:

artcher [175]3 years ago

6 0

Yes the last one in the corner should be correct hope this helps

nlexa [21]3 years ago

5 0

Answer:

The table in the bottom left corner

Step-by-step explanation:

In the table in the bottom left corner you see a continued pattern of everytime the x axis goes up by 1 the y axis drops by two (1,-2) and when you look at the rest of the charts there is no pattern meaning the rest of the tables are non linear

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Find the zeros of y= x - 4x - 9 by completing the square.

Paraphin [41]

The zeros for the given equation are A. $x = {2 \pm \sqrt{13}}.$

Step-by-step explanation:

Step 1:

To solve for x in a polynomial equation, we use the formula

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}.$

Here a is the coefficient of $x^{2}$ , b is the coefficient of $x$ and c is the coefficient of the constant term.

In the given equation, $a = 1, b = -4, c = -9$ .

Step 2:

Substituting the values of a, b, and c in the equation, we get

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a} =\frac{-(-4) \pm \sqrt{(-4)^{2}-4 (1)(-9)}}{2 (1)} = \frac{4 \pm \sqrt{(16+36}}{2 }.$

$\frac{4 \pm \sqrt{(16+36}}{2 } = \frac{4 \pm \sqrt{(52}}{2 } = \frac{4 \pm2 \sqrt{(13}}{2 }= {2 \pm \sqrt{13}}.$

So the answer is option A. $x = {2 \pm \sqrt{13}}.$

3 0

4 years ago

10m 2m 2m 3 m 1m 8m Find The Perimeter

alina1380 [7]

Answer:

26m

Step-by-step explanation:

To find the perimeter of a figure, you have to add up all the sides. 10 + 2 + 2 + 3 + 1 + 8= 26, therefore the perimeter of the figure is 26 m.

8 0

3 years ago

20 out of 25 students were 15 y/o, what percentage of the students is 15 ?

zalisa [80]

Answer:

80% are 15 years old

Step-by-step explanation:

To find the percent , we need to know how many out of 100

20/25

Multiply the top and bottom by 4

20*4

-----------

25*4

80/100

This is 80%

80% are 15 years old

4 0

3 years ago

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a jar has 170 coins. there are 50 more pennies than nickels. twice as many quarters as nickels. what are the coins?

Amanda [17]

80 pennies 30 nickels and 60 quarters

3 0

3 years ago

If you flip a coin 20 times how would you find the theoretical probability of tossing tails?

Andrej [43]

About 1/2 since there is only 2 sides to a coin.

8 0

3 years ago

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