Answer: 1/10
Step-by-step explanation:
From the question, we are informed that Karen spent 7/10 hour reading and 3/5 hours writing in her journal.
To calculate how much longer karen spent reading than writing in her journal, we have to subtract 3/5 from 7/10. This will be:
= 7/10 - 3/5
Note that the lowest common multiple of 5 and 10 is 10.
= 7/10 - 6/10
= 1/10
Therefore, the answer is 1/10
Answer:
Step-by-step explanation:
We are to show that 
<u>Proof:</u>
From trigonometry identity;


From trigonometry, 2sinAcosA = Sin2A

Also note that sin(B-C) = sinBcosC - cosBsinC
sin420cos140 - cos420sin140 = sin(420-140)
The resulting equation becomes;

= 
Answer:
do you have a photo I don't get it not being funny do you have a photo or something I'm trying to help as much as I can
supplementary angles add up to 180 degrees
x + y = 180
x - y = 92
---------------add
2x = 272
x = 272/2
x = 136 <=== this is one angle
x + y = 180
136 + y = 180
y = 180 - 136
y = 44 <=== this is ur other angle