Since the 7 is in front of the parentheses you must multiply it by everything inside the parentheses. 7 times X is 7X and 7 times -2 is -14. Then you need to make the X be by itself on one side, to do that you have to add 14 to -14 to make it disappear, and also add 14 to the other side, to 28. Then you divide both sides by 7 to make X be by itself.
7(x-2)=28
7X-14=28
7x=42
X=6
Answer:
i think the second option
Step-by-step explanation:
follow me on my insta a.cc.o.u.n.t below
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Answer:
100 42/100
Step-by-step explanation: you put the change as a fraction
17,190 / 5,730 = 3. This means we must divide 70mg in half 3 times
70 / 2 = 35
35 / 2 = 17.5
17.5 / 2 = 8.75
There will be 8.75 mg left after 17,190 years.
Diameter = 7 cm
radius = 7÷2 = 3.5
Volume of cone = 1/3
Volume of cone = 1/3
= 115 cubic inches (Answer B)
