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sasho [114]
3 years ago
6

Solve (algebraically by any method) 3x to the 2 power +8x - 4= 0

Mathematics
1 answer:
Ratling [72]3 years ago
5 0
3 x^{2} + 8x +(-4) = 0
x = <u>-b + √ b² - 4ac</u>
               2a
x = <u>-8 + √ 8² - 4(3)(-4)</u>
                 2(3)
x = <u>-8 + √64 - 48 </u>
               6
x = -<u>8 + √16
</u>           6<u>
</u>x = -<u>8 + 4 </u>      x = <u>-8 - 4</u>
         6                    6<u>
</u>x = <u>-4  </u>            x = <u>-12</u>
      6                       6    
x =<u> -2 </u>             x = -2<u>
</u>      3   <u>
</u>
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The complement of an angle is $5^{\circ}$ more than four times the angle. what is the number of degrees in the measure of the an
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Answer:

  17°

Step-by-step explanation:

Let x represent the measure of the angle.

  (90 -x) = 5 + 4x . . . . the complement is 5° more than 4 times the angle

  85 = 5x . . . . . . . . . . add x-5 to both sides

  17 = x . . . . . . . . . . . . divide by 5

The measure of the angle is 17°.

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3 years ago
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Step-by-step explanation:

q(a) = ½a + 38

The slope of q is ½.  So the perpendicular slope is -1/½ = -2.

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h + 7 = -2 (x − 12)

Simplify to get slope-intercept form.

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lbvjy [14]

Answer:

480 feet.

Step-by-step explanation:

We are told that the function h(t)=-16t^2+16t+480 models Jason's height above ocean measured in feet as a function of time and t is the time in seconds from jumping off.

To find the height of cliff we need to substitute t=0 in our given function as at t=0 we will get Jason's height above ocean which is same as the height of the cliff.

Upon substituting t=0 in our function we will get,

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Answer:

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