3 years ago

Graph the function. Identify the vertex and axis of symmetry f(x) = –x2 – x + 2

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

5 0

I hope this is right (-5) + (-4) + (7);
= -9 + 7;
= -2

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DerKrebs [107]

Answer:

28 m

Step-by-step explanation:

The top angle in the triangle = 90° - 62° = 28°

Using the cosine ratio in the right triangle

cos28° = $\frac{adjacent}{hypotenuse}$ = $\frac{25}{x}$

cross- multiply

x × cos28° = 25 ( divide both sides by cos28° )

x = $\frac{25}{cos28}$ = 28.31425... ≈ 28 m

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PIT_PIT [208]

Answer:

$\boxed{\boxed{\tt x=87^{\circ}}}$

Step-by-step explanation:

We know that a triangle has 3 sides, A triangle's interior angles add up to 180 degrees.

Now, let's write this as an equation:

$\tt x^{\circ}+37^{\circ}+56^{\circ}=180^{\circ}$

The missing angle is 180° minus the sum of the other two angles.

$\tt x^{\circ}=180^{\circ}-56^{\circ}-37^{\circ}$

Subtract the numbers:

$\tt 180^{\circ}-56^{\circ}-37^{\circ}=87^{\circ}$

$\tt x=87^{\circ}$

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