Given a (0,1,1) B (2, - 1,0) C (3,5,7) d (1,2,4), then the cosine of the angle between the line AB and the line CD is
According to the question, ab (vector) = (2, - 2, - 1), CD (vector) = (- 2, - 3, - 3), then AB (vector) dot multiplied by CD (vector) = - 4 + 6 + 3 = 5, ab (vector) dot multiplied by CD (vector) = | ab | ×| CD | × cos Φ, | ab | = √ 5, | CD | = √ 22, so cos Φ = √ 110 / 22
(3 out of 4-36 out of 17-12 out of 7) × (- 36) seeking process seeking answer
=(27/36-17/36-21/36)*(-36)
=(-11/36)*(-36)
=11
Calculation: 1 + 316 + 5112 + 7120 + 9130 + 11142 + 13156 + 15172 + 17190
1+316+5112+7120+9130+11142+13156+15172+17190,=1+(3+16)+(5+112)+(7+120)+(9+130)+(11+142)+(13+156)+(15+172)+(17+190),=(1+3+5+7+9+11+13+15+17)+(16+112+120+130+142+156+172+190),=81+...
Three 5's and one 1's are added, subtracted, multiplied and divided. The result is twenty-four
5×(5-1÷5)=24
7. 3, - 7, - 3, the mixed operation is equal to 24
Be more detailed
7×[3+(-3)÷(-7)]=24
(-7)×[(-3)÷7-3)=24
What is the quotient of 3.8 minus 1.45 divided by 0.5?
(3.8-1.45)/0.5 = 4.7
What is the difference between the quotient of 6 / 5 divided by 12 and 1 / 3 of 18
Because it's division, not division,
12/(6/5)-18*1/3=12*5/6-6=10-6=4
What is 8 / 7 times 7 + 8 / 3?
8/7*7=8
8 + 8 / 3 = 10 and 2 / 3, that is 32 / 3
Or something like this:
8/7*(7+8/3)=232/21
How much is 400 square kilometers multiplied by 2 meters high?
0.8 cubic kilometers
How much is 909900 hundred 99 plus 13000 plus one times 10000
90990099+13000+1*10000 = 91 013 099