first what quantities do we need to talk about?
the problem speaks of “a number”, let’s call that number x.
now write the equation that relates x to the other numbers we know.
the first clue is the word “difference”.
this means “subtraction”, but we need to subtract something from something else.
what are the two somethings? ”a number times 7” and “4”.
so, since we have a name for “a number”, let’s translate this as x*7 - 4 what else do we know?
it says the difference is 9. So complete the equation x*7 - 4 = 9 if we rewrite this cosmetically, 7x - 4 = 9
i assume that you know how to solve this for x.
so then wehn solving 7x - 4 =9 we take -4 change it to +4 so then +9 we go and get 13
7x = 13
7/7 = 13/7
x= 13/7
Answer: they do not have enough info but I will try my best to answer if im wrong its not my fault so please add more info
Solution
2. I know that for a Semi-Circle Area = 320 . From this find out Area of the Semi-Circle.
Solution:
Here Area=320(Given)
Area=
πr2
2
r2=
Area⋅2
π
r2=
320⋅2
22
7
r=14.2701
Diameter(d)=2r
=2⋅14.2701
=28.5402
Circumference=πr
=
22
7
⋅14.2701
=44.849
Perimeter=πr+2r
=
22
7
⋅14.2701+2⋅14.2701
=44.849+28.5402
=89.6979
Step-by-step explanation:
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also can I have brainliest
Answer:
B. Angle D and Angle E
C. Angle C and Angle F
Step-by-step explanation:
Alternative Interior angles are not adjacent and are at opposite sides of the transversal.
The correct answer is B.
Can I please have brainliest?
