Is the answer 157.19xy tell me if I'm right
<span>3b+7.1=2.5b+11.5
</span>
First, you'd take 2.5b and subtract it from 3b
3b-2.5b+7.1=11.5
Simplify:
.5b+7.1=11.5
then, you would take 7.1, and since it is positive, subtract it from 11.5
.5b=11.5-7.1
Simplify:
.5b=4.4
Lastly, you'd take 4.4 and divide it by .5, leaving the unknown factor alone.
b=4.4/.5
Final answer:
b=8.8
Answer:
x=πn, n∈Z
Step-by-step explanation:
if sin²2x=1-cos²2x, then
1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;
Step-by-step explanation:
may be it is answer.......
Answer:
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