Answer:
x = 1000
Step-by-step explanation:
Logarithms are just a base, exponent and answer, rearranged in a different order. No doubt you have seen "log" followed by a small font, low (subscript) number or letter, followed by a regular-size font number or letter. This is set equal to another number or letter. Your problem doesn't have that subscript (small font, low on the line) When this is not written, it is understood to be a 10. So your problem, rearranged to look like an exponent is:
10^3 = x
10 to the 3rd power is 10×10×10 which is
1000.
Answer:
Step-by-step explanation:
1/R = 1/R1 + 1/R2
R = 15
R1 = 23
The best way to do this question is to convert the resistances to decimals.
1/R = 1/15 = 0.0666666
1/R1 = 1/23 = .04348
0.066666666 = 0.0438 + 1/R2 Subtract 0.0438 from both sides.
0.023188 = 1/R2 Take the reciprocal of both sides.
43.125 = R2
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You can use fractions if you prefer. But it will a lot messier.
1/15 - 1/23 = 1/R2
23/345 - 15/345 = 1/R2
8/345 = 1/R2 Take the reciprocal of both sides.
345/8 = R2
R2 = 43.125
Answer:
Area = 260 cm²
Step-by-step explanation:
Area of parallelogram = base × height
Base = 20 cm
Height = 13 cm
Plug in the values
Area of parallelogram = 20 × 13
Area = 260 cm²
Answer: 97ft
Step-by-step explanation:
20+20= 40
30-3=27
40+30= 70
70+27= 97ft
See attached picture for solution: