How many degrees and seconds does 18.3 degrees equal?

How many degrees and seconds does 18.3 degrees equal?

Because 1 degree = 60 minutes, 1 minute = 60 seconds
So 0.3x3600 = 1080 seconds
So 18.3 degrees is 18 degrees, 1080 seconds

A rectangle has the same area as a square. It is known that the side length of a square is 12 cm, the length of a rectangle is 18 cm, and the width of a rectangle is 12 cm______ ．

12 × 12 / 18 = 144 / 18 = 8 (CM), answer: the width of a rectangle is 8 meters

It is known that sin (α - β) = 3 / 5, sin (α + β) = - 3 / 5, π / 2

π/2

If there is only one circle passing through point a (0,1) and point B (4, m) and tangent to X axis, then the real number M =?, the equation of this circle is?; m =?, the equation of this circle is

In the function y = - 2x + 3, if x satisfies___ The image is in the first quadrant

∵ function y = - 2x + 3, image in the first, second and fourth quadrant, when y = 0, x = 32, image only in the X axis, x = 0, y = 3, so image in the first quadrant, then 0 < x < 32

(0.3 + x) * 2 = 8 equations
It's not an equation. No

0.3+x=4
x=3.7

If f (x) = 2x * 2-mx + 3 is a decreasing function at negative infinity, - 2 and an increasing function at - 2 and positive infinity, then f (1)=

Hope to bring you some help
Because the function f (x) = 2x * 2-mx + 3 is a decreasing function at negative infinity, - 2 and an increasing function at - 2 and positive infinity
So the axis of symmetry of the function is a straight line x = - 2
So - B / 2A = - 2
That is - M / 4 = 2
Then M = - 8
So the function f (x) = x & # 178; + 8x + 3
Then f (1) = 1 + 8 + 3 = 12

What is 33 divided by nine out of eleven?

33÷9/11
=33x11/9
=121/3

Let u be a complete set and a be a subset of u, then a ∩ B=
be
A∩B=
A ∩ empty set=
A∩CUA=
A∪A=
A ∪ empty set=
A∪CUA=
The first wrong number is a ∩ a=

A ∩ B = B ∩ a (what set is b)
A ∩ empty set = empty set
A∩CUA= A
A∪A=A
A ∪ empty set = a
A ∪ CUA = a ∪ C

The solution of equation 1.5x = 3 is x = 0.5______ (judge right or wrong)

1.5x = 3, 1.5x △ 1.5 = 3 △ 1.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 2