What's the reciprocal of minus one and five out of seven

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• 1. Nanotechnology is a new technology. It is a unit of length. One nanometer is equal to one billionth of a meter. Expressed by scientific notation: one meter=______ Nanometer
• 2. Nanometer is a unit of length, which is used to represent the length of a tiny particle. One nanometer is one billionth of a meter, and 10 ^ - 9 meters, which is equivalent to one 60000 of the diameter of a hair. It is known that the length of a certain micro particle is 80 nm. Please use decimal to indicate the length of the particle?
• 3. If the sum of the square y of the monomial MX and the-n-1 power y of NX is zero, we can find the value of M fast
• 4. The volume of the earth is 9.05x10 cubic kilometers, the radius of the sun is the second power of the earth's 10, the volume of the sun!
• 5. It is known that the radius of the ball is RCM and the volume of the ball is 850cm3. According to the formula of the volume of the ball, V ball = 43 π R3, the value of R (accurate to 0.01) can be obtained
• 6. The earth can be approximately a sphere with a radius of 6.37 * 10 to the third power (km). What is the volume of the earth The earth can be approximately regarded as a sphere with a radius of 6.37 * 10 cubic kilometers. What is the volume of the earth
• 7. The radius of the earth = 6.4 * 10 cubic km, the volume of the earth, π = 3, v = 4 / 3 π r cube
• 8. The volume of a basketball is 256 cubic centimeters, and the radius r of the ball is calculated (where V = 3 / 4 π × R is the cube, and π is 3) To write the process, complete, thank you!
• 9. The volume of a basketball is 9850 cubic centimeters. The radius of the basketball is 3.14. The result is accurate to 0.1
• 10. 1. (1 in 100 x 1 in 99 x 1 in 98 X 3 / 1 x 2 / 1 x 1) to the power of 200 (100x99x98x97 X3x2x1) to the power of 200 2. (2nth power of B) to the third power (the third power of B) to the fourth power (the fifth power of B) n + 1 power 3. {0.4x-0.2y = 3.9 and 3 / 5-5 / 5 4Y = 1.7}
• 11. What are the other units between millimeter and micron
• 12. How to measure the diameter of a hair
• 13. How to measure the diameter of a hair
• 14. How many meters is 12 nanometers?
• 15. 200 ml = () cm to the third power
• 16. What is the minus 8 power of 10?
• 17. 1. The power of 2011 of (- 8) times the power of 2010 of 0.125 is equal to? 2; If a is equal to the sixth power of - 8a and the ninth power of B, then a is equal to? 3. The fourth power of (- 3a to the fifth power) + the square of (2a to the fourth power) multiplied by the square of (a to the square) is equal to? 4. If the cube of (M minus 1 power of 2x, m plus 2n power of Y) is equal to the 12th power of 8x, and the 9th power of Y, then M equals? N equals? N?
• 18. The square of 3x to the fourth power of 2x to the fourth power of 7x-3 is the expression of () degree (), in which the coefficient of the highest degree term is (), and the constant term is ()
• 19. Odd times even equals? Why
• 20. Odd number plus odd number equals even number, why even number plus even number does not equal odd number?