Answer:
x
=
±
√
21
Explanation:
To find
x
2
you have to find the square root of
21 x = ± √ 21 ≈ ± 4.5286
Step-by-step explanation:
1,2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60.
In the box under the +4 put a +1, which means that column would equal 7. and then to the right of the +1 put a +6. on top of the +6 put a +3. then to the left of +3 put a 0. and the. on the bottom of the +1, right next to the +2, put a +6.
Answer:
c
Step-by-step explanation:
Rewrite equations:
y=x+4;−2x+y=−1
Step: Solvey=x+4for y:
y=x+4
Step: Substitutex+4foryin−2x+y=−1:
−2x+y=−1
−2x+x+4=−1
−x+4=−1(Simplify both sides of the equation)
−x+4+−4=−1+−4(Add -4 to both sides)
−x=−5
−x
−1
=
−5
−1
(Divide both sides by -1)
x=5
Step: Substitute5forxiny=x+4:
y=x+4
y=5+4
y=9(Simplify both sides of the equation)
