3 years ago

Which number is an irrational number?

Mathematics

2 answers:

aliina [53]3 years ago

7 0

Answer:

0.14 would be an irrational number.

anygoal [31]3 years ago

5 0

The square root of eight

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-0.2x^2+0.9x+0.6=y<br>What's the vertex form for this equation?

hjlf

Answer: y = -0.2(x - 2.25)² + 1.6125

<u>Step-by-step explanation:</u>

$y = -0.2x^2 + 0.9x + 0.6\\\\y - 0.6 = -0.2x^2 + 0.9x\\\\y - 0.6 =-0.2(x^2-4.5x)\\\\y-0.6+\underline{(-0.2)(2.25)^2}=-0.2(x^2-4.5x+\underline{2.25^2})\\\\y-0.6-1.0125=-0.2(x-2.25)^2\\\\y-1.6125=-0.2(x-2.25)^2\\\\y=-0.2(x-2.25)^2+1.6125$

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3 years ago

To find the angle of rotation θ between the previous x and y axes and the new x′ and y′ axes, we use the formula: cotangent of 2

Tamiku [17]

The equation is the given one:

$\cot 2\theta=\frac{A-C}{B}$

Which is the same as:

$\tan 2\theta=\frac{B}{A-C}$

And the interval of the angle θ must be (0°,90°) so, 2θ must be (0°,180°).

So the statement is True.

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11 months ago

Which equation represents a true sine ratio in triangle ABC

ArbitrLikvidat [17]

Answer:

$sin(A)=\frac{h}{c}$

Step-by-step explanation:

we know that

The value of sine of an angle in a right triangle is equal to the opposite side of the angle divided by the hypotenuse

$sin(A)=\frac{h}{c}$

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2 years ago

What is 13/15÷5 3/4

Nataliya [291]

Answer:

52/345

Step-by-step explanation:

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2 years ago

Abandoned mines frequently fill with water. Before an abandoned mine can be reopened, the water must be pumped out. The size of

ale4655 [162]

Answer:

350gallons /minute

Step-by-step explanation:

D = minimun depth of mine

4D-250 = minimum gallon per minute required to pump

4(150)- 250= 350gallon/minute

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2 years ago