Move the 1st equation to get y by itself so it’s now y=-4x so you can substitute that in for the second equation 2y+x=-7 becomes 2(-4x)+x=-7
-8x+x=-7
-7x=-7
x=1
then plug that back in to find y
4(1)+y=0
4+y=0
y=-4
now you have x and y so your coordinate (the answer) is (1, -4) hope this helps!
Answer:
Step-by-step explanation:
You must have not input your units of cm^2
Answer:
53/5 = 10 3/5
Step-by-step explanation:
convert both to fraction
7x5 + 1 = 36
3x5 + 2 = 17
36 + 17 = 53
actually you could have just added
7 + 3 = 10
1 + 2 = 3 for the fraction
Answer:
Commutative Property of Addition
Step-by-step explanation:
8а + 4 = 4 + 8а
Commutative Property of Addition a + b = b + a
We changed the order of the addition
Answer: Approximately 13 ft
Step-by-step explanation: For this, you have to do the Pythagorean Theorem. First set up an equation. That equation is a squared+b squared=c squared. Next, plug in values. A=12 and b=4. The equation becomes 12 squared+4 squared=c squared. Do the math and you'll get 144+16=c squared. Add and get 160=c squared. Then do the square root of both sides and you'll get 12.649=c. Round to nearest whole number to get approximately 13 ft. You can also represent it as the square root symbol with 160 inside, like this(√160).
