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3 years ago

How many centimeters squared in .0255 square yards

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

(0.0255 yards²) x (36 inch/yard)² x (2.54cm/inch)² =<em> 213.2 cm²</em>

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2. A surveyor measures the distance across a river that flows straight north by the following method. Starting directly across f

IgorLugansk [536]

Answer:

The wide is 70.02 m.

Step-by-step explanation:

First you need to draw a triangle with only one 90 degrees angle.

The opposite side to the 90 degrees angle will be the hypotenuse.

We will call the remaining sides ''Baseline'' and ''River wide''.

The angle between hypotenuse and baseline is 35 degrees.

The triangle has one 90 degrees angle so we can apply the tangent equation

in the angles that are no 90 degrees.

Tangent (angle) = Opposite side/adjacent

Tan(35°)= River wide/100m

River wide = 100m.Tan(35°)

River wide = 70.02 m

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4 years ago

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3 years ago

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Which of the following function rules will translate all of the coordinates of a function f(x,y) to the right 2 units and five u

algol [13]

Answer: 4. (x+2, y-5)

Step-by-step explanation:

Translation is a right motion used to move a figure on coordinate plane by some distance.

The translation rule to translate a image h units right and k units down is given by :-

$(x,y)\to (x+h, x-k)$

So, the translation rule for translating all of the coordinates of a function f(x,y) to the right 2 units and five units down will be

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3 years ago

taurus [48]

Answer:

$x^2 - 2x + 10$ , option B

Step-by-step explanation:

Complex numbers:

The most important relation that involves complex numbers is given by:

$i^2 = -1$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

The solutions are:

$x_1 = 1 - 3i, x_2 = 1 + 3i$

We have to find the polynomial. All option have $a = 1$ . So

$(x - (1 - 3i))(x - (1 + 3i)) = x^2 - x(1 + 3i) - x(1 - 3i) + (1 - 3i)(1 + 3i) = x^2 - x -3ix - x + 3ix + 1^2 - (3i^2) = x^2 - 2x + 1 - 9i^2 = x^2 - 2x + 1 - 9(-1) = x^2 - 2x + 10$

The correct answer is given by option b.

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3 years ago

A researcher observes that the p-value for a model relating how the photosynthetic rate is affected by available nitrogen (a con

snow_lady [41]

Answer:

a. Photosynthetic rate does not depend on the amount of available nitrogen

Step-by-step explanation:

Options are <em>"A) Photosynthetic rate does not depend on the amount of available nitrogen B) Photosynthetic rate is positively correlated with the amount of available nitrogen C) The amount of available nitrogen is positively correlated with the photosynthetic rate D) The amount of available nitrogen does not depend on the photosynthetic rate</em>"

Null Hypothesis is the hypothesis of no difference so apt null hypothesis would be that there is no relation between the photosynthetic rate and the amount of available nitrogen

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3 years ago