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3 years ago

Write a proportion using the ratio WV/WX. Pls help ASAP!!

Mathematics

2 answers:

Triss [41]3 years ago

7 0

WV/WX = WY/ WV = VY/VX

hope it helps

algol133 years ago

5 0

Answer:

$\frac{WV}{WX}=\frac{VY}{VX}$

Step-by-step explanation:

we know that

In the right triangle WVX

$cos(W\°)=\frac{WX}{WV}$

Remember that

$cos(W\°)=sin(Y\°)$ ------> equation A

Because are complementary angles

In the right triangle VXY

$sin(Y\°)=\frac{VX}{VY}$

substitute the values in the equation A

$\frac{WX}{WV}=\frac{VX}{VY}$

Rewrite the expression

$\frac{WV}{WX}=\frac{VY}{VX}$

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A superhero asked his nemesis how many cats she has. she answered with a riddle "Three-fourths of my cats plus seven" how many c

liq [111]

Let C be the number of cats of the superhero. With this, the number of cats of nemesis have is 3C/4 + 7. The numbers should be equal such that,
C = 3C/4 + 7
The value of C from the equation is 28. Thus, the number of cats of the nemesis is 28.

6 0

3 years ago

What is the value of the correlation coefficient r of the data set?

enyata [817]

The correct option will be: C) 0.84

Explanation

Formula for Correlation coefficient :

$r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}$

First, for each point(x, y), we need to calculate x², y² and xy .

Then, we will find sum all x, y, x², y² and xy, which gives us Σx, Σy, Σx², ∑y² and Σxy

(Please refer to the attached image for the table )

Here we got, ∑x = 44 , ∑y = 183 , ∑x² = 362 , ∑y² = 6575 and ∑xy = 1480

'n' is the total number of data set, which is 7 here.

So, plugging those values into the above formula..........

$r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}\\ \\ r=\frac{7(1480)-(44)(183)}{\sqrt{[7(362)-(44)^2][7(6575)-(183)^2]}}\\ \\ r=\frac{10360-8052}{\sqrt{(598)(12536)}}\\ \\ r=\frac{2308}{\sqrt{7496528}}\\ \\ r=0.84$

So, the value of the correlation coefficient is 0.84

4 0

3 years ago

Read 2 more answers

Hey can u help me how to do this plz.

Svetach [21]

Okay so x represents the amount of tickets sold. So first, you’d add the $40 + $70 which equals $110. So x = $110.

Now we have to solve for y. Same thing but with different numbers. $200 + $260 = $460.
The answer is (110,460)
x. y.

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2 years ago

PLEASE HELP ME!!! WILL MARK AS BRAINLIEST!!!!!!!

frez [133]

Esmeralda I think it's wrong cuz it’s like the question but that's added a parentheses so I think that's wrong

8 0

3 years ago

A box has colored balls (12 red, 10 green, 6 light blue and 8 yellow). What is the probability of drawing 2 red balls?

ale4655 [162]

Answer:

You will have a 33% chance of drawing a red ball

Step-by-step explanation:

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2 years ago