When calculating the 7th power of 27 with a calculator, what is the order of the keys?

When calculating the 7th power of 27 with a calculator, what is the order of the keys?

27-power bond-7-=

If the key sequence calculated by the calculator is 134-211, then the calculation test is --------, and the result is -------

The formula is: 134-211 =?
The result is: - 77

If the quadratic power of X + 2XY + the quadratic power of Y - (x + y) * a + 25 is a complete square
What is the value of a

If the quadratic power of X + 2XY + the quadratic power of Y - (x + y) * a + 25 is a complete square
【a=±10】
X to the second power + 2XY + y to the second power = (x + y) squared
If you don't understand, I wish you a happy study!

6023 times 2005 of 2008 (simple calculation)

6023*2005/2008
=(2008*3 - 1)*2005/2008
=2005*3 - 2005/2008
=6014 and 3 / 2008

As shown in the figure, ⊙ P and ⊙ o intersect at two points a and B, ⊙ P passes through the center O, and point C is any point of AB on the superior arc of ⊙ P (not coincident with points a and b), connecting AB, AC, BC and OC. (1) point out an angle equal to ∠ ACO in the figure; (2) when point C is at what position on ⊙ P, is the straight line CA tangent to ⊙ o? Please explain the reason; (3) when ∠ ACB = 60 °, what is the size relationship between the radius of two circles? Please state your reasons

(1) In ⊙ o, ⊙ OA = ob, ⊙ OA = ob, ⊙ ACO = ⊙ BCO; (2) connect OP and extend the intersection with ⊙ P at point D. if point C is at point D, the straight line CA is tangent to ⊙ O. reason: connect AD and OA, then ⊙ Dao = 90 °, OA ⊥ Da ⊙ Da is tangent to ⊙ o, that is, when point C is at point D, the straight line CA is tangent to ⊙ O. (3) when ⊙ ACB = 60 °, the radii of two circles are equal Make the diameter OD, connect BD, ad, OA, ∵ ∠ ADB = ∠ ACB = 60 ° Po, divide AB, Ao = Bo, ∵ ∠ ADO = ∠ BDO, ∵ ADO = 30 °, ∵ od is the diameter, ∵ Dao = 90 °, ∵ OA = 12od, ∵ OA = Po, when ∠ ACB = 60 ° the radii of the two circles are equal

English (8 14:58:31)
 
1.When she saw her mistakes in the homework,her face      red.
A.turn      B.became       C.got      D.turned  
Why D

The sentence is in the past tense, so if a is removed, it means that the face turns red. If B is removed, it means that the face turns red

Are there triangles congruent with △ Abe in the graph? Please prove your conclusion

Angle B = D ∠ BAM = EAC so that angle BAE = angle CAD and AC = AB triangle ACD are all equal to △ Abe

Eight fifths divided by five ninths divided by twenty-four

Eight fifths divided by five ninths divided by twenty-four
=8 / 5 × 9 / 5 × 1 / 24
=9 / 25 × 1 / 24
=3 / 200

How to transpose matrix symbol in MATLAB

It's just a single quotation mark, don't you know?
magic(4)
ans =
16 2 3 13
5 11 10 8
9 7 6 12
4 14 15 1
>> ans'
ans =
16 5 9 4
2 11 7 14
3 10 6 15
13 8 12 1

A simple algorithm for 660 divided by 55 and 120 divided by 24

=(11x60)/(11x5)-(12x10)/(12x2) =60/5-10/2 =12-5 =7
Remember to adopt it