Aunt Li processes 9 parts per minute, and Aunt Zhang processes 570 parts per hour, Formula

Aunt Li processes 9 parts per minute, and Aunt Zhang processes 570 parts per hour, Formula

Li's one minute 9. One hour (60 minutes) 540
570 per hour
Aunt Zhang is fast

How to fill in the differential dy = () of function y = e upper right corner sin2x

y=e^(sin2x)
lny=sin2x
y'/y=cos2x*(2x)'
y'/y=2cos2x
y'=2ycos2x
y'=2cos2x*e^(sin2x)
dy=2cos2x*e^(sin2x)dx

Kilogram per cubic centimeter to gram per cubic centimeter process

1 kg / m3 = 10 ^ 3 g / 10 ^ 6 cc = 10 ^ (- 3) g / cc
1g / cc = 10 ^ (- 3) kg / 10 ^ (- 6) m3 = 10 ^ 3kg / m3

The problem of counting 24 points
7,3, - 3,7 is 24 points

[3-(-3 )÷ 7] × 7=24

Translation of function image
The teacher said it's "inverse plus and downstream minus". Don't mention "up plus down minus, left plus right minus" to me

That is to say, the forward direction is the positive direction, and the reverse direction is the opposite direction
For example, y = x ^ 2 + 3, if you move 3 units in the positive direction of X and 5 units in the positive direction of Y, then the equation after moving is
（Y-5）=(X-3)^2 +3

A cuboid has a surface area of 220 square centimeters, a bottom area of 20 square centimeters, and a bottom perimeter of 18 centimeters
emergency

Cuboid side area = 220-20 × 2 = 180 square centimeter
Height of cuboid = 180 △ 18 = 10 cm
Cuboid volume = 20 × 10 = 200 cm3

How to use addition, subtraction, multiplication and division to equal 10 between 1 and 8

1+2+3+4+5-6-7+8=10

Given the terminal point P (2t, - 3T) of angle α (t ≠ 0), the values of sin α, cos α and Tan α are obtained

tanα=-3t/(2t)=-3/2
Draw a right triangle angle α. The opposite side is 2T and the adjacent side is 3T
So the hypotenuse root is 13T
Sin α = 2T / (root 13T) = 2 / (root 13) or sin α = - 2 / (root 13)
Cos α = 3t / (root 13T) = 3 / (root 13) or cos α = - 3 / (root 13)

The copper plate is 25 mm long, 6 mm wide and 8 mm thick?

M = PV = 8.9 * 25 * 6 * 8 / 10 ^ 9kg = 1.068 * 10 ^ - 5kg

The perimeter of a rectangle is 28cm. If the length of the rectangle is reduced by 2cm and the width is increased by 4cm, a square can be formed. What are the length and width of the original rectangle?

Suppose the length of the rectangle is xcm, then the width is (14-x) cm. According to the meaning of the question, we get: X-2 = (14-x) + 4. The solution is: x = 10, 14-x = 14-10 = 4. Answer: the length of the rectangle is 10cm, and the width is 4cm