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2 years ago

Identify the maximum or minimum value, domain, and range of the graph of the quadratic function.

Mathematics

1 answer:

Virty [35]2 years ago

5 0

Answer:

See below ~

Step-by-step explanation:

Details of the graph of the quadratic equation

Minimum value = -1
Domain : all real numbers
Range : y ≥ -1

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57.33 is 80% of what number?

Leni [432]

45.864, because 57.33 divided by 100 is 0.5733 that multiplied by 80 is 45.864

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2 years ago

Help please. I need the answer

grandymaker [24]

Answer:

y=-2/3x+6

Step-by-step explanation:

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What is 1 1/3 x 2/3 in the simplest form?

wlad13 [49]

Answer:8/9

Step-by-step explanation:4/3 * 2/3=8/9

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3 years ago

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If sinA=√3-1/2√2,then prove that cos2A=√3/2 prove that

Ivan

Answer:

$\boxed{\sf cos2A =\dfrac{\sqrt3}{2}}$

Step-by-step explanation:

Here we are given that the value of sinA is √3-1/2√2 , and we need to prove that the value of cos2A is √3/2 .

Given :-

• $\sf\implies sinA =\dfrac{\sqrt3-1}{2\sqrt2}$

To Prove :-

• $\sf\implies cos2A =\dfrac{\sqrt3}{2}$

Proof :-

We know that ,

$\sf\implies cos2A = 1 - 2sin^2A$

Therefore , here substituting the value of sinA , we have ,

$\sf\implies cos2A = 1 - 2\bigg( \dfrac{\sqrt3-1}{2\sqrt2}\bigg)^2$

Simplify the whole square ,

$\sf\implies cos2A = 1 -2\times \dfrac{ 3 +1-2\sqrt3}{8}$

Add the numbers in numerator ,

$\sf\implies cos2A = 1-2\times \dfrac{4-2\sqrt3}{8}$

Multiply it by 2 ,

$\sf\implies cos2A = 1 - \dfrac{ 4-2\sqrt3}{4}$

Take out 2 common from the numerator ,

$\sf\implies cos2A = 1-\dfrac{2(2-\sqrt3)}{4}$

Simplify ,

$\sf\implies cos2A = 1 -\dfrac{ 2-\sqrt3}{2}$

Subtract the numbers ,

$\sf\implies cos2A = \dfrac{ 2-2+\sqrt3}{2}$

Simplify,

$\sf\implies \boxed{\pink{\sf cos2A =\dfrac{\sqrt3}{2}} }$

Hence Proved !

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2 years ago

2. Using the substitution method, Jose is solving the following system of equations

Svetradugi [14.3K]

Answer:

Step-by-step explanation:

the answer is 3 if you check very well

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2 years ago