Take the x-axis and y-axis and locate the point on the graph. if it is exactly on the line it is a solution. Alternatively you could take the equation in the form of y=mx+b or ay+bx=c and replace the variables with the actual numbers and see if the equation makes sense
Answer:
An experimental study because it will give the most accurate results.
Step-by-step explanation:
The observational study could also be somewhat useful, but the most accurate results will come from an experimental study. You will test the difference in DNA, blood pressure, and such. Whilst, the observational study, you only can observe the effects from the outside. The sample studies mean nothing because you can't test both sides of the complete study.
1. (-3) Turns to positive because of parenthesis.
2. 3 X 3 X 3 X 3 X 3
Answer: 243
Hope this helps! =^-^=
Ok the perpendicular lines generally intersect at right angle to one another.The best way to approach this is to look at the slopes that are lines that are opposite reciprocals of one another.
<span><span />
</span>
Step-by-step explanation:
15) 50 ÷ 2 = 25
17) Mean = 301, Mode = 40-50
(10+20) ÷ 2 = 15, (20+30) ÷ 2 = 25, (30+40) ÷ 2 = 35
(40+50) ÷ 2 = 45, (50+60) ÷ 2 = 55, (60+70) ÷ 2 = 65
(70+80) ÷ 2 = 75
• 15×4 = 60, 25×8 = 200, 35×10 = 350, 45×12 = 540
55×10 = 550, 65×4 = 260, 75×2 = 150
Mean = (60+200+350+540+550+260+150) ÷ 7
= 2110 ÷ 7
= 301.4285....
= 301
Mode : the highest frequency