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Naddik [55]
3 years ago
9

Solve for x using the Quadratic Formula: x2 + 4x + 4 = 0 -b + Vb2 - 4ac x= 2a

Mathematics
1 answer:
Irina18 [472]3 years ago
8 0

Answer:

x = -2.

Step-by-step explanation:

In this case, a is 1, b is 4 and c is 4.

-4 plus or minus the square root of 4^2 - 4 * 1 * 4 divided by 2 * 1 = -4 plus or minus the square root of 16 - 16 / 2 = -4 plus or minus the square root of 0 / 2 = -4 / 2 = -2.

x = -2.

Hope this helps!

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Which equation is equivalent to 2/3 x -5 / 6 equals -5 / 12 x + 1 / 4​
cluponka [151]

Answer:

13x=13

Step-by-step explanation:

...............

6 0
3 years ago
The position function for a free-falling object is s(t) = -16t^2 + vt +5. A ball is thrown upward from the top of a 400-foot bui
mixer [17]

Answer:

6.21 seconds

Step-by-step explanation:

The position function of a free-falling object is,

s(t) = -16t^2+v_0t+s_0

Where,

s_0 = initial height of the object,

v_0 = initial velocity of the object,

Here,

s_0=400\text{ feet}

v_0=35\text{ feet per sec}

Hence, the height of the ball after t seconds,

s(t)=-16t^2+35t+400

When s(t) = 0,

\implies -16t^2+35t+400=0

t=\frac{-35\pm \sqrt{35^2-4\times -16\times 400}}{2\times -16}

t=\frac{-35\pm \sqrt{1225+25600}}{-32}

\implies t\approx -4.02\text{ or }t\approx 6.21

∵ Time cannot be negative,

Hence, after 6.21 seconds the ball will reach the ground.

4 0
3 years ago
What are three equivalent ratios 14/2
Taya2010 [7]

Answer:

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Step-by-step explanation:

Reduce the ratio to lowest terms, then multiply numerator and denominator by any same value to get another equivalent.

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3 0
3 years ago
A hockey player takes 150 shots each week. Sixty percent of these shots go in. How many shots do NOT go in?
Viefleur [7K]
60 percent of 150 is 90. So that means 60 shots do not go in.
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3 years ago
WILL MARK BRAINLIEST <br>slove for the following variables ​
UkoKoshka [18]

Answer:

Step-by-step explanation:

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z is equal to 110 degrees because it is opposite to that angle measure because all rhombi have 2 way symmetry.

8 0
3 years ago
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