2 years ago

Solve the quadratic function by completing the square 2x^2+8x+14=0

1 answer:

7 0

$2x^2+8x+14=0 \\\\x^2+4x+7=0\\\\x^2+4x+4+3=0\\\\(x+2)^2=-3\\\\x+2=\sqrt{-3} \vee x+2=-\sqrt{-3}\\\\x=-2+\sqrt3i \vee x=-2-\sqrt3 i$

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Identify the solution and graph of the given inequality.<br> 34 > 3(2 − x)

Verizon [17]

Answer:

Solving the inequality we get x>-9.33

The graph is shown in figure attached.

Step-by-step explanation:

We need to solve the inequality: $34 > 3(2-x)$

Solving:

$34 > 3(2-x)\\$

Switching the sides , reversing the inequality and Multiply 3 with terms inside the bracket

$3(2-x)$

Subtract 6 from both sides

$6-3x-6$

Divide both sides by -3 and inequality will be reversed

$\frac{-3x}{-3} >\frac{-28}{3} \\x>\frac{-28}{3}\\x>-9.33$

Solving the inequality we get x>-9.33

The graph is shown in figure attached.

6 0

3 years ago

Solve for w<br> w-3.83=2.36

ivanzaharov [21]

Answer:

6.19

Step-by-step explanation:

Step 1:

w - 3.83 = 2.36

Step 2:

w = 2.36 + 3.83

Answer:

w = 6.19

Hope This Helps :)

3 0

2 years ago

Read 2 more answers

Simplify. Multiply and remove all perfect squares from inside the square roots.

Arisa [49]

Answer:

120x√(7x)

Step-by-step explanation:

4 0

2 years ago

8 2/10- 5 7/10 I really need to know the answer to this

Darina [25.2K]

Answer:

$\frac{5}{2}$

Step-by-step explanation:

$8\frac{2}{10}$ - $5\frac{7}{10}$ = $\frac{5}{2}$

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3 years ago

You plan to drive to your next vacation destination that is 258 miles away. your car currently gets 24 miles per gallon.

levacccp [35]

A). 10.75 gallons is needed for the trip
B). 3.98 x 10.75 = 42.785
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2 years ago