Company A: y=6x+12
Company B: y=5x+15
x is the variable for how many windows they clean.
A:
y=6(8)+12
y=48+12
y=60
B:
y=5(8)+15
y=40+15
y=55
Company B charges less for 8 windows.
A:
y=6(6)+12
y=36+12
y=48
B:
y=5(6)+15
y=30+15
y=45
Company B charges $3 less than Company a to clean 6 windows.
Answer:205
Step-by-step explanation:This is an hexogon so you would do
720-118-112-131-154
You are supposed to already know the side lengths for these triangles in the Unit Circle. You need to take the time to memorize!
Triangles are "similar" if their angle measures are the same but their side lengths are different (they will be proportional, though). These triangles are 45°-45°-90° and 30°-60°-90°, respectively.
45°-45°-90°:
........./|
..1./....| [(√2)/2]
/____|
[(√2)/2]
30°-60°-90°:
..../|
1/..| [(√3)/2]
/__|
..½
note that the hypotenuse-length is always 1 when the triangle is inscribed in the Unit Circle. Multiplying the lengths of *every* side of a triangle by the same number creates a Similar Triangle.
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26) you know that one angle is 45°, and that this is a right triangle (because of the square in the corner). That means the other angle must be 45° and this is a well-known 45°-45°-90° triangle. You know the OPPOSITE side is 5 units long and the HYPOTENUSE is y units long. Therefore, for *this* triangle:
sin(45°) = OPP/HYP = 5/y
But from the Unit Circle, we also know the irreducible proportion for the SINE of a 45° angle is:
sin(45°) = OPP/HYP = [(√2)/2]/(1) = (√2)/2.
we can equate sin(45°) for similar triangles:
sin(45°) = sin(45°)
5/y = (√2)/2
multiply by reciprocals or identity-fractions until you get
y = 5√2
=====================
27) you know that one angle is 30°, and that this is a right triangle (because of the square in the corner). That means the other angle must be 60° and this is a well-known 30°-60°-90° triangle. You know the OPPOSITE side is x units long, the ADJACENT side is 3√3 units long, and the HYPOTENUSE is y units long. You can solve for x and y by relating the TANGENT and COSINE proportions for *this* triangle...:
tan(30°) = OPP/ADJ = x/[(√3)/3]
cos(30°) = ADJ/HYP = [(√3)/3]/y
...with the TANGENT and COSINE proportions for the 30°-60°-90° triangle inscribed in the Unit Circle:
tan(30°) = {(½)/[(√3)/2]} = 1/√3 = [(√3)/3]
cos(30°) = {[(√3)/2]/(1)} = [(√3)/2]
Equate them:
tan(30°) = tan(30°)
x/[(√3)/3] = 1/√3
multiply by reciprocals or identity-fractions until you get
x = ⅓
cos(30°) = cos(30°)
[(√3)/3]/y = [(√3)/2]
multiply by reciprocals or identity-fractions until you get
y = 2/3
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The methods for calculating evapotranspiration from meteorological data require various climatological and physical parameters. Some of the data are measured directly in weather stations. Other parameters are related to commonly measured data and can be derived with the help of a direct or empirical relationship. This chapter discusses the source, measurement and computation of all data required for the calculation of the reference evapotranspiration by means of the FAO Penman-Monteith method. Different examples illustrate the various calculation procedures. Appropriate procedures for estimating missing data are also provided.
Meteorological data can be expressed in several units. Conversion factors between various units and standard S. I. units are given in Annex 1. Climatic parameters, calculated by means of the equations presented in this chapter are tabulated and displayed for different meteorological conditions in Annex 2. Only the standardized relationships are presented in this chapter. The background of certain relationships and more information about certain procedures are given in Annex 3. Annexes 4, 5 and 6 list procedures for the statistical analysis, assessment, correction and completion of partial or missing weather data.
Multiply the first number by 0.032 then add it to the first number and that will be your answer