Step-by-step explanation:
<h2>using ELIMINATION method</h2>
10x-8y=20
4x+8y=36
14x=56
x=56/14
x=4
<h3>
NOW FOR Y.</h3>
10(4)-8y=20
40-8y=20
-8y=20-40
-8y=-20
y=-20/-8
y=2.5
<h2>
MARK ME BRAINLIEST PLS!!</h2>
Answer:
i think its just the last one
Step-by-step explanation:
because the first two are all real numbers and the thrid equals one
Answer:
yes
Step-by-step explanation:
B
Multiply 35% by 200 and get 70
Add that 70 to 200 and you’ll get B which is 270
Answer:
so x = 20 , y = -21 , which is in quad IV
r^2= 400+441 = 841
r = √841 = 29
then cos Ø = 20/29
sec Ø = 29/20 = 1.45
Step-by-step explanation:
please give brainliest