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Artyom0805 [142]
3 years ago
8

Solve 4x-y=-5 -2x+3y=10​

Mathematics
2 answers:
jok3333 [9.3K]3 years ago
4 0
(x,y) = (9/2,8) thats the answer
allsm [11]3 years ago
3 0

Answer:

(x,y) =(7/2,4)

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Find each product<br> y(9 + 2y)
yanalaym [24]
Y (9 + 2y)

= y (9) + y (2y)

= 9y + 2y²

= 2y² + 9y
3 0
3 years ago
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Assuming a linear relationship between x and y, if the coefficient of correlation (r) equals -0.75, this means that:
Gelneren [198K]

Since we are given that the relationship between x and y is linear. Therefore this means that the given equation takes the form of:

y = m x + b

where,

b is the y intercept of the equation

m is the slope of the equation

 

However we should take note that the slope m is directly proportional to the coefficient of correlation. Since our coefficient of correlation is negative, this only means that the value of y is decreasing with increasing x, hence plot of y and x is descending with increasing x. Furthermore, this also tells that for every 1 unit increase of x, there is a 0.75 units decrease of y.

6 0
3 years ago
What is the length of CD? In this diagram, <br> ABC ~ EDC.
Alex777 [14]

Hey there!

Answer:

CD = 3.

Step-by-step explanation:

Since the triangles are similar, we can set up a ratio to determine the other side-lengths:

\frac{12-x}{18} =\frac{x}{6}

Cross multiply:

6(12-x) = 18x

Distribute the '6':

72-6x = 18x

Combine like terms and simplify:

72 = 24x

x = 3

Therefore, the length of CD is 3.

5 0
4 years ago
The perimeter of a rectangle is 44 inches. If the width of the rectangle is 8 inches, what is the length? OA. 14 inches​
solong [7]

A. 2(x+14) = 42

(2x = 14

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5 0
3 years ago
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The ratio of the angles in a triangle is 5:9:10. what is the measure of the largest angle?
Maksim231197 [3]

The measure of the largest angle is 75 degrees.

<h3>What is a triangle? </h3>

A triangle is a polygon with three sides and vertices. The sum of angles in a triangle is 180 degrees. Types of triangles include: right-angled triangle, isosceles triangle, equilateral triangle and scalene triangle.

<h3>What is the measure of the largest angle? </h3>

The measure of the largest angle = (largest ratio / sum of ratios) x 180

10 / 24 x 180 = 75 degrees

Please find attached an image of a triangle. To learn more about a triangle, please check: brainly.com/question/9329354

6 0
3 years ago
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