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3 years ago

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:

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

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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,

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

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

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

∵ Time cannot be negative,

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

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3 years ago

What are three equivalent ratios 14/2

Taya2010 [7]

Answer:

7/1
21/3
532/76

Step-by-step explanation:

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

$\dfrac{14}{2}=\dfrac{2\cdot 7}{2\cdot 1}=\dfrac{7}{1}\\\\=\dfrac{3\cdot 7}{3\cdot 1}=\dfrac{21}{3}\\\\=\dfrac{76\cdot 7}{76\cdot 1}=\dfrac{532}{76}$

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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]

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3 years ago

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UkoKoshka [18]

Answer:

Step-by-step explanation:

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110+33+y=180

y=37 degrees

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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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