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➷ The last number : n
The second number : n - 1
The third number : n - 2
n + n - 1 + n - 2
Simplify this:
3n - 3
Substitute 5 into it:
n = 5
n - 1 = (5) - 1 = 4
n - 2 = (5) - 2 = 3
3(5) - 3 = 12
Their sum is 12
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I think this help, i'm not sure
Answer:
ROS
Step-by-step explanation:
It only lasts for 20 minutes, and takes 50 minutes to charge (She needs a new phone). 100-(10*5)=50
50+(20*2)=90%
she uses it for 10 minutes and charges it for 20 minutes.
Answer:






Step-by-step explanation:
step 1
Find the value of x
we know that
----> by alternate interior angles
solve for x
Group terms


step 2
Find the measure of angle a
we know that
----> by vertical angles
substitute the value of x

step 3
Find the measure of angle b
we know that
----> by supplementary angles (form a linear pair)
we have

substitute


step 4
Find the measure of angle c
we know that
----> by vertical angles
we have

therefore

step 5
Find the measure of angle d
we know that
----> by corresponding angles
we have

therefore

step 6
Find the measure of angle e
we know that
----> by alternate exterior angles
we have

therefore

step 7
Find the measure of angle f
we know that
----> by vertical angles
we have

therefore
