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3 years ago

What is the positive solution to the equation 2x^2 = 72?

Mathematics

2 answers:

GaryK [48]3 years ago

7 0

2x^2=72
x^2=36
x=±6
x=6
x=-6

vagabundo [1.1K]3 years ago

4 0

Answer:

x= 6

Step-by-step explanation:

6*6=36*2=72

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Help please <br> No or yes

ivann1987 [24]

Answer:

Yes

Step-by-step explanation:

There both equal, have the same amount of angle degrees.

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3 years ago

Read 2 more answers

A water tank has a diameter of 15 ft and is 22 ft high. a. What is the volume of the tank in ft?? b. In m?? c. In cm?

rodikova [14]

Answer:

a) $V = 3887.72 ft^{3}$

b) $V = 104.97 m^{3}$

c) $V = 104,968,468.538 cm^{3}$

Step-by-step explanation:

A tank has the format of a cylinder.

The volume of the cylinder is given by:

$V = \pi r^{2}h$

In which r is the radius and h is the heigth.

The problem states that the diameter is measured to be 15.00 ft. The radius is half the diameter. So, for this tank

$r = \frac{15}{2} = 7.50$ ft

The height of the tank is 22 ft, so $h = 22$ .

a) Volume of the tank in $ft^{3}$ :

$V = \pi r^{2}h$

$V = pi*(7.5)^2*22$

$V = 3887.72 ft^{3}$

b) Volume of the tank in $m^{3}$ :

We must convert both the radius and the height to m.

Each feet has 0.30 m, so:

Radius:

1 feet - 0.30m

7.5 feet - r m

$r = 7.5*0.30$

$r = 2.25m$

Height

1 feet - 0.30m

22f - h m

$h = 22*0.30$

$r = 6.60m$

The volume is:

$V = \pi r^{2}h$

$V = pi*(2.25)^2*6.60$

$V = 104.97 m^{3}$

c) Volume of the tank in $cm^{3}$ :

Each m has 100 cm.

So $r = 2.25m = 225cm$

$h = 6.60m = 660cm$

The volume is:

$V = \pi r^{2}h$

$V = pi*(225)^2*660$

$V = 104,968,468.538 cm^{3}$

7 0

4 years ago

A charity organization is collecting trash from the highway. The bags are placed in one box and weighed. Use the table to write

tatuchka [14]

6 bags=38 pounds heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

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4 years ago

292,160 round it to the thousands

choli [55]

290,000
Hope this cool

8 0

3 years ago

The answer is not d

olga_2 [115]

Answer:

Answer c: 1000

Step-by-step explanation:

Set f(x) = 2 log x - 6 = 0 as a first step in finding the zero or zeros.

2 log x - 6 = 0 becomes log x - 3 = 0 after dividing all three terms by 2.

Then log x = 3, and because "log x" has base 10, the value of x is 10^3, or 1000.

6 0

3 years ago