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Svetach [21]
3 years ago
7

2xsquared - 72= 0 Solve the equation?

Mathematics
2 answers:
34kurt3 years ago
4 0

Answer:

-68

Step-by-step explanation:

Dafna11 [192]3 years ago
3 0

Answer:

x = -6 or x = 6

Step-by-step explanation:

2x^2 - 72 = 0

Divide both sides by 2.

x^2 - 36 = 0

Factor the left side. It is a difference of two squares. The pattern for that is

a^2 - b^2 = (a + b)(a - b). Now we apply that pattern to x^2 - 36 on the left side.

(x + 6)(x - 6) = 0

x + 6 = 0 or x - 6 = 0

x = -6 or x = 6

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The building is 231.7 m far away.Distance can refer to a physical length or an estimate based on other factors in physics or common use.

<h3>What is distance?</h3>

Distance is a numerical representation of the space between two objects or locations. |AB| is a symbol for the distance between two points A and B.

Given data;

Speed of sound  = 331 meters per second

Time = 0.7 sec

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2 years ago
True or false f(x) is a function
il63 [147K]

The correct answer is False.

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6 0
3 years ago
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DedPeter [7]

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7 0
3 years ago
Please help. <br> X=<br> 4<br> 7<br> 9
Sauron [17]
If you look at the circle, the numbers given add up to 11. The interior angles of a circle always add up to 180 degrees. If you add zeroes onto the numbers given they become 30, 20, and 60. These add up to 110. Out of the choices given the only one that would make sense is 7, because if you add a zero onto 7 it becomes 70. 110 + 70 = 180.
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3 years ago
How many 1/4 litre bottles can be filled from a jug containing 8 litres of water?<br>​
frosja888 [35]

Answer:

32 bottles

Step-by-step explanation:

In this scenario, we have to divide 8 by 1/4 to see how many of those 1/4-liter bottles can be filled with 8 liters of water. So, let's go ahead and see how this looks mathematically, then we'll start simplifying:

\frac{8}{1} ÷ \frac{1}{4}

Dividing by a fraction is the same as <em>multiplying by that same fraction's reciprocal</em>, so we can rearrange our math to make things easier.

\frac{8}{1} × \frac{4}{1}

Now, we can multiply the numerators and the denominators.

\frac{8}{1} × \frac{4}{1} = \frac{32}{1} =32

So 32 of those 1/4 liter bottles can be filled from a jug containing 8 liters of water. Hopefully this was helpful! If anything was confusing or didn't make sense, let me know so I can make things clearer. :)

6 0
2 years ago
Read 2 more answers
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