2 years ago

What property is (−6.8+(−5.1))+6.2=(−5.1+(−6.8))+6.2

Mathematics

1 answer:

neonofarm [45]2 years ago

3 0

Hope this help!! I think so

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Which statement is true about the extreme value of the given quadratic equation?

ICE Princess25 [194]

Answer:

Option B. The equation has a maximum value with a y-coordinate of -21.

Step-by-step explanation:

The correct quadratic equation is

$y=-3x^{2}+12x-33$

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

Convert to vertex form

Factor -3

$y=-3(x^{2}-4x)-33$

Complete the square

$y=-3(x^{2}-4x+2^2)-33+12$

$y=-3(x^{2}-4x+4)-21$

Rewrite as perfect squares

$y=-3(x-2)^{2}-21$

The vertex is the point (2,-21)

therefore

The equation has a maximum value with a y-coordinate of -21

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2 years ago

While eating a big bowl of pho (Vietnamese soup), you discover that the diameter of the bowl is 9 inches. What is the circumfere

Sever21 [200]

Circumference = π × diameter
π × 9 = 28.274333882
To 1dp = 28.3
Circumference = 28.3 inches

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3 years ago

Round your answer to this problem to the nearest degree.

Vika [28.1K]

Use the sine law: sinB/b = sinA/a

SinB = b*sinA/a

sinB = 3*sin120° /8

∠ B = 18.94° ≈ 19°

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2 years ago

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The mass of a grain of dad is 10^-3 grams. about how many grams of sand are in a 10kg bag of sand.

Mashutka [201]

98-787 eng 676 #56 is done

4 0

3 years ago

Please help me I’ll give u brainliest and if u do thank u

snow_tiger [21]

Answer: 40:27

Step-by-step explanation: 80:54 / 2:2 = 40:27

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3 years ago