2 years ago

Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help me

Mathematics

1 answer:

Vaselesa [24]2 years ago

5 0

Show another picture i cant see you

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9/20

NISA [10]

For this case we must find the solution of the following quadratic equation:

$x ^ 2 + 5x + 7 = 0$

Where:

$a = 1\\b = 5\\c = 7$

Then, the solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting the values:

$x = \frac {-5 \pm \sqrt {5 ^ 2-4 (1) (7)}} {2 (1)}\\x = \frac {-5 \pm \sqrt {25-28}} {2}\\x = \frac {-5 \pm \sqrt {-3}} {2}$

By definition we have: $i ^ 2 = -1$

$x = \frac {-5 \pm \sqrt {3i ^ 2}} {2}\\x = \frac {-5 \pm i \sqrt {3}} {2}$

Thus, we have two complex roots.

Answer:

The equation has no real roots.

4 0

3 years ago

I really need help fast

xenn [34]

Answer:

Tom jogged farther.

Step-by-step explanation:

2 1/2 + 3 1/8 = 5 5/8 5 6/8 would be equalt to 5 3/4 but since it isn't 5 3/4 is farther.

Tom jogged 1/8 farther.

6 0

3 years ago

Eric owns and operates the hot food truck.The expression 3.25b+2h gives the cost of burgers and h hot dogs.What is the cost of 4

Nat2105 [25]

3.25(4)+2(6) --plug in values
13+12 --multiply
$25 --answer

5 0

3 years ago

Which is NOT a major expense category?<br> housing<br> transportation<br> electricity<br> food

ruslelena [56]

That would be food! Hope this hlep!

5 0

3 years ago

Read 2 more answers

Please help please please help

arsen [322]

46.19 should be the answer

4 0

3 years ago