Answer:
(x, y) = (2, -1.5)
Step-by-step explanation:
x + 2y = -1
5x - 4y = 16
<=>
(2)x + (2)2y = (2)(-1)
5x - 4y = 16
<=>
2x + 4y = -2
5x - 4y = 16
<=>
7x = 14
<=>
x = 2
(*)x + 2y = -1
=> 2 + 2y = -1
=> 2y = -3
=> y = -1.5
=> (x, y) = (2, -1.5)
Answer:
<em><u>SEE</u></em><em><u> </u></em><em><u>THE</u></em><em><u> </u></em><em><u>IMAGE</u></em><em><u> </u></em><em><u>FOR</u></em><em><u> </u></em><em><u>ALL</u></em><em><u> </u></em><em><u>ANSWERS</u></em><em><u>.</u></em>
20/10=2.
14/7=2.
2 dollars per pound.
-7+(9)=2
you can do the opposite of what is given (9-7)
Answer:
B,E and F
Step-by-step explanation:
- (B)A cross section parallel to the base is a square measuring 4 cm by 4 cm.
Since a cube has <u>equal base length</u>, any cross section parallel to the base will also have an equal base length.
- (E)A cross section perpendicular to the base through the midpoints of opposite sides is a square measuring 4 cm by 4 cm.
Since a cube has <u>equal side lengths</u>, any cross section parallel to the side will also have an equal base length.
- (F)A cross section that passes through the entire bottom front edge and the entire top back edge is a rectangle measuring 4 cm by greater than 4 cm.
Using Pythagoras Theorem
![4^2+4^2=4\sqrt{2}>4](https://tex.z-dn.net/?f=4%5E2%2B4%5E2%3D4%5Csqrt%7B2%7D%3E4)
There the cross section will be a rectangle which measures ![4\sqrt{2}\:cm\:by\:4\:cm](https://tex.z-dn.net/?f=4%5Csqrt%7B2%7D%5C%3Acm%5C%3Aby%5C%3A4%5C%3Acm)