Wha is the value of 8(3+x) when x=7
1 answer:
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1. Check the sketch of the problem.
2. In right triangle DCE,
tan 50 can be found to be 1.19 using a scientific calculator or other software.
x=1.19*50=59.5 (feet)
3. The height of the building is 59.5+5=64.5 (feet)
Answer: 64.5 (feet)
2. In right triangle DCE,
tan 50 can be found to be 1.19 using a scientific calculator or other software.
x=1.19*50=59.5 (feet)
3. The height of the building is 59.5+5=64.5 (feet)
Answer: 64.5 (feet)
Remember 
so since they're all being multiplied, just add the exponents and see which one doesn't add to 2
A. -3+5-2+2=2+0=2, yep
B. -9+0+2+5=-9+7=-2, nope
C. -3-1+1+5=-4+6=2, yep
D. -5+9-2+0=4-2=2, yep
answer is B
so since they're all being multiplied, just add the exponents and see which one doesn't add to 2
A. -3+5-2+2=2+0=2, yep
B. -9+0+2+5=-9+7=-2, nope
C. -3-1+1+5=-4+6=2, yep
D. -5+9-2+0=4-2=2, yep
answer is B