2y=-x+9
6y=3(-x+9)
3x-3(-x+9)=-15
3x-(-3x+27)=-15
3x+3x-27=-15
6x=-15+27
6x=12
x=2
2y=-2+9
2y=7
y=7/2
Answer is (2 ; 7/2)
Answer:
480 millimeters.
step-by-step explaination:
well 48cm is 100 millimeters i believe so its 480 mm
Answer:
340.8cm^2
Step-by-step explanation:
So surface area is basically the area of all the sides combined. And we know that the area of a triangle is 1/2bh, and for a rectangle it is LW. So there are three congruent rectangles, and one of those rectangle's area is 72 ( 6 x 12), so you can multiply that by 3 to find all three rectangles, which is 216. We also know that the two triangles are congruent. and the base is 12, and height is 10.4, so 12 x 10.4 is 124.8.
We take the total of the rectangles and the triangles to find the total surface area:
216 + 124.8 = 340.8cm^2
Answer:
3.1 i nee brain
Step-by-step explanation:
Answer:
t = $23
s= $47
Step-by-step explanation:
First order =
13t + 4s = 487
Second order
6t + 2s = 232
13t + 4s = 487 (1)
6t + 2s = 232 (2)
Multiply (2) by 2
12t + 4s = 464 (2b)
13t + 4s = 487
12t + 4s = 464
Subtract
12t - 10t = 487 - 464
t = $23
Substitute t = 23
13t + 4s = 487
13(23) + 4s = 487
299 + 4s = 487
4s = 487 -299
4s = 188
s = 188 / 4
= 47
s= $47
