3 years ago

How do you solve algebraically 8x^2=18

1 answer:

5 0

That would be
$x = + \frac{ \sqrt[]{3} }{ \sqrt[]{2} }$
BTW the plus sign is supposed to have this sign underneath it _
Good luck.

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18 miles is what percent of 24 miles?

Gekata [30.6K]

Answer:

3/4

Cause there are 3 sixes in 18 and 4 sixes in 24

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3 years ago

MZAOB = 6x- 12°<br> mZBOC = 3x+ 30°<br> Find mZAOB:

Elanso [62]

The answer is 14 hope is right

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3 years ago

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Find the 5th term in the geometric sequence, given the first term of 5 and common ratio of -3

Archy [21]

Answer:

5-3-3-3-3-3= -10

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3 years ago

Need help with this if you can explain please do if not then just and answer is okay

pshichka [43]

Step-by-step explanation:

f(x) = x / (x - 7) = 1 + 7 / (x - 7).

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A reflecting pool is shaped like a right triangle, with one leg along the wall of a building. The hypotenuse is

maria [59]

Answer:

8 ft, 15 ft, 17 ft

Step-by-step explanation:

Let x feet be the length of the side along the building. If the hypotenuse is 9 feet longer than the side along the building, then the length of the hypotenuse is x+9 feet. If the third side is 7 feet longer than the side along the building, then the length of the third side is x+7 feet.

This triangle is right triangle. By the Pythagorean theorem,

$x^2+(x+7)^2=(x+9)^2,\\ \\x^2+x^2 +14x+49=x^2+18x+81,\\ \\x^2-4x-32=0,\\ \\D=(-4)^2-4\cdot 1\cdot (-32)=16+128=144,\\ \\x_{1,2}=\dfrac{-(-4)\pm\sqrt{144}}{2\cdot 1}=\dfrac{4\pm12}{2}=-4,\ 8.$

The length of the side cannot be negative, thus x=8 ft. Then x+7=15 ft, x+9=17 ft.

8 0

3 years ago