Multiply bottom equation by -3 to add and eliminate y’s.
So...
5x-15y=10
+-9x+15y=18
You get -4x=28 so x=-7
Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3
Check in other equation
3(-7)-5(-3)=
-21+15=-6
So x= -7 and y= -3
<h2>
Step-by-step explanation:</h2>
<h3>Width of rectangle = 7 cm</h3>
<h3>because ∵ width of rectangle is equal to the radius of each semicircle.</h3>
<h3>therefore ∴ radius of each semicircle (r) = 7 cm.</h3>
<h3>therefore ∴ Diameter of each semicircle = 14 cm</h3>
<h3>therefore ∴ Length of rectangle = 3 x 14 = 42 cm.</h3>
<h2>Answer:</h2>
<h3>63.21
<em><u>c</u></em><em><u>m</u></em><em><u>'</u></em><em><u>2</u></em></h3>
<h2>
<em><u>Please!</u></em><em><u> </u></em><em><u>Mark</u></em><em><u> </u></em><em><u>me</u></em><em><u> as</u></em><em><u> brainliest</u></em><em><u> </u></em><em><u>please</u></em><em><u>.</u></em></h2>
So cube faces were numbered 1, 2, 3, 4, 5 and 6.
There are 6 faces in total and there are two faces greater than 4 (face 5 and 6).
So that would be (desired outcomes) / (total outcomes) = 2 / 6 = 1/3
So theoretical probability of rolling a number greater than 4 is 1/3.
Hope this helps.
Take the first 2 and take out -7x2. bringing it to (-7x2)(x-3)+(3x-9)
then take out 3 on the right side.
-7x^2 (x-3)+3 (x-3)
factors to (3-7x2)(x-3)