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faltersainse [42]
3 years ago
6

Very urgent please help me

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

Step-by-step explanation:

8r + 9 + 7r + 6 = 90

15r + 15 = 90

15r = 75

r = 5

8(5) + 9 = 40 + 9 = 49

7(5) + 6 = 35 + 6 = 41

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Solve for k, 6k-2z=12
Alenkinab [10]
The previous question I answered was exactly like this.

6(4) - 2(6) = 12.

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4 0
3 years ago
The planning committee at school has 10 members. Exactly four of these members are teachers. A four-person subcommittee with at
Kipish [7]

Answer:

865

Step-by-step explanation: The set of possibilities are:

Subcommittee  is of 4 people according to:

4  teachers    0 other member       total possibilities    1

3  teachers     1     teachers  C₄,₃  = 4   and  other member  6    6*4   =  24

2 teachers     2      C₄,₂  =  4!/2!  = 12    2 (om)    and  C₆,₂   =  6!/4!  = 30

30*12  = 360

1  teacher        3     (om)               4         and  C₆,₃ = 6!/3!   =  120

120*4  = 480

Total ways of committee    1  + 24  + 360 +  480  = 865

4 0
3 years ago
PLEASE HELP!!!!
Nadya [2.5K]

Answer:

(-1,1,3)

Step-by-step explanation:

midpoint = (x1+x2/2, y1+y2/2, z1+z2/2)

midpoint = ( (-6+4)/2, (3+-1)/2, (4+2)/2 )

midpoint = (-2/2, 2/2, 6/2)

midpoint = (-1, 1, 3)

6 0
3 years ago
Plz awnser :) but explain i actually wanna know how to do this. long division, 1300÷15=?
chubhunter [2.5K]
(Divide) 1,300÷15=86.6666666667
6 0
4 years ago
3×(5-2)=(blank×5) - (blank×2)
ale4655 [162]

Answer:

dont worry about it brother here

Step-by-step explanation:

6 0
3 years ago
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