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3 years ago

Help help help help pls

Mathematics

2 answers:

Butoxors [25]3 years ago

4 0

Answer:

Step-by-step explanation:

A function is any relation for which an input does <em>not</em> equal two different outputs. For instance, if a set contains (1, 1) and (1, 2), then the set is not a function. However, a set that contains (1,1) and (1,1) is a function because it's the same thing. In other words, the x-coordinate cannot repeat. If it does, it must equal to same thing.

For W, none of the x-coordinates are repeated. Thus, W is a function.

Similarly, for X, none of the x-coordinates are repeated either. X is a function.

Again, for Y, none of the x-coordinates are repeated. Y is a function.

Lastly, for Z, the same thing. None of the x-coordinates are repeated, so Z is a function.

Thus, all choices are a function. The answer is A.

NikAS [45]3 years ago

3 0

Answer:

A. all of them

Step-by-step explanation:

In a function, every x in a (x,y) pair can have only one distinct y value.

This seems to be the case in the given sets of pairs.

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What the correct answer now

Lesechka [4]

Answer:

Area of the triangle WXY = 111.8 mm²

Step-by-step explanation:

By applying Sine rule in the given triangle WXY,

$\frac{\text{SinW}}{\text{XY}}=\frac{\text{SinX}}{\text{WY}}=\frac{\text{SinY}}{\text{WX}}$

Since m∠W + m∠X + m∠Y = 180°

m∠W + 26° + 130° = 180°

m∠W = 180° - 156°

m∠W = 24°

$\frac{\text{Sin24}}{\text{XY}}=\frac{\text{Sin130}}{31}=\frac{\text{Sin26}}{\text{WX}}$

$\frac{\text{Sin24}}{\text{XY}}=\frac{\text{Sin130}}{31}$

XY = $\frac{31\times (\text{Sin24})}{\text{Sin130}}$

XY = 16.4597

≈ 16.4597 mm

Area of the triangle = $\frac{1}{2}(\text{XY})(\text{WY})\text{SinY}$

= $\frac{1}{2}(16.4597)(31)\text{Sin26}$

= 111.83 mm²

≈ 111.8 mm²

Therefore, area of the triangle WXY = 111.8 mm²

4 0

3 years ago

On an average Saturday, 15% of tickets sold are child tickets. If there were 460 tickets sold on Saturday, how many were sold to

Alex777 [14]

Answer:

Step-by-step explanation:

15% -> .15

If only 15% were sold to kids then we mutiply 0.15 x 460 = 69

8 0

3 years ago

Help please !!!!<br> 1 . What is the mean of the data set?

Lesechka [4]

Means can be translated to average
average= total number/number of objects or numbers
so the answer is 393, 399, 402,402,407, 410, 424, 425, 428 all added together then divided by 9
if we use a calculator to add them up we get 3690
then divide by 9
3690/9=410
410 is the mean

6 0

3 years ago

Read 2 more answers

A line passes through the point (6,-1) and is perpendicular to the line with equation - 2x + 3y = -6.

defon

Answer: y = − 3/2 x + 8

Step-by-step explanation:

Find the Perpendicular Line

Solve −2x + 3y = −6.

y = −2 + 2x/3

Find the slope when y = −2 + 2x/3 .

m = 2/3