Solve the system algebraically
x+3y=11
4x-4y=7
2 answers:
Answer:
x = 65/16, y = 37/16
Step-by-step explanation:
solve the system algebraically
x+3y=11
4x-4y=7
Try substitution.
let x = 11 - 3y
Plug in.
4(11 - 3y) - 4y = 7
44 - 12y - 4y = 7
44 - 16y = 7
37 = 16y
y = 37/16
x = 11 - 3*y
x = 11 - 3*(37/16)
x = 11 - 111/16
x = 65/16
It may be 7/3 or 2.33 I’m sorry if I got it wrong
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$36
You would do 21 divided by 3 and get 7.
It is the same. Even though you put a 0 in the end can't change the number
Answer:
<h3>#7</h3>
(a)
<u>Sample space:</u>
1*1, 1*2, 1*3, 1*4, 2*1, 2*2, 2*3, 2*4, 3*1, 3*2, 3*3, 3*4, 4*1, 4*2, 4*3, 4*4 Total 16 outcomes
(b)
(i) P(even) = 12/16 = 3/4 (ii) P(3x) = 7/16 (iii) P(perfect square) = 4/16 = 1/4 <h3>#8</h3>
(a) <u>Sample space:</u>
1T, 1H, 2T, 2H, 3T, 3H, 4T, 4H Total 8 outcomes
(b)
(i) 1T, 3T
(ii) 1H, 4H
P(H and square) = 2/8 = 1/4 (iii) 1H, 2H, 3H, 4H
558.7 , because 74 x 7.55 = 588.7 , it would be his total for the two weeks
