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dmitriy555 [2]
3 years ago
9

Solve the given equation by completing the square.

Mathematics
1 answer:
klasskru [66]3 years ago
3 0

Answer:

Step-by-step explanation:

x^2+8x=38\\\\x^2+8x-38=0\\\\\Delta=8^2+4*38=216=6^3\\\\x=\dfrac{-8-6\sqrt{6}  }{2} \ or\ x=\dfrac{-8+6\sqrt{6}  }{2}\\\\x=-4-3\sqrt{6} \ or\ x=-4+3\sqrt{6}\\\\a=-4\\b=3\\c=6\\

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WILL MARK BRAINLIEST!!! Can someone help me wit dis question?
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Answer:

B.) -4

Step-by-step explanation:

y=mx+b

b is equal to the y-intercept.

7 0
3 years ago
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The doctor recommended that Mike increase the number of calories he burns working out from 1,500 to 1,800. By what percent did t
Viefleur [7K]

Answer: The number of calories increased by 20%.

Step-by-step explanation:

Given : The doctor recommended that Mike increase the number of calories he burns working out from 1,500 to 1,800.

Previous number of calories he used to burn = 1,500

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Now , the percent increase in calories = \dfrac{\text{Increase in calories}}{\text{previous calories}}\times100

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3 0
3 years ago
If an object is launched at an angle of 28° with an initial velocity of 133 ft./s from a height of 6 feet how many seconds will
Tema [17]

Answer:

Hence after  3.98 sec  i.e  4 sec Object will hit the ground  .

Step-by-step explanation:

Given:

Height= 6 feet

Angle =28 degrees.

V=133 ft/sec

To Find:

Time in seconds after which it will hit the ground?

Solution:

<em>This problem is related to projectile motion for objec</em>t

First calculate the Range for object  and it is given by ,

R=v^2Sin(2Ф)/g

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R=467.62  fts

Now using Formula for time and range as

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467.62=117.43*T

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4 0
3 years ago
Please help!! Question is down below and I’m kinda confused
Arada [10]
It would be the last one
4 0
3 years ago
Help don’t understand
marusya05 [52]

Answer:

f(-14) = -6

f(-4) = 6

f(12) = 6

f(0) = -3

negative

Step-by-step explanation:

f(-14) = -6

This is because when x is -14, y is -6, as seen in the graph

f(-4) = 6

This is because when x is -4, y is 6, as seen in the graph

f(12) = 6

This is because when x is 12, y is 6, as seen in the graph

f(0) = -3

This is because when x is 0, y is -3, as seen in the graph

is f(4) positive or negative?
negative

This is because when x is 4, y is -6, as seen in the graph

6 0
2 years ago
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