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geniusboy [140]
3 years ago
11

Please help and explain! :)

Mathematics
1 answer:
Gennadij [26K]3 years ago
4 0
You and three of your friends means that there are four people to divide by. In the first month 438/4= 109.5 each. The total profit per person over two months is 184. 184-109.5=74.5 dollars each from the second month. Multiply by four to see how much profit was made total. 74.5x4=298
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If x is directly proportional to y and x=3.4 when y=2 find y when x=5.1
dlinn [17]
The Answer is b. Hope that helps
5 0
3 years ago
Với điều kiện nào của m thì phương trình ( 3m^2 - 4) x -1=m-x có nghiệm duy nhất?
Shtirlitz [24]
 <span>a, để pt có nghiệm thì denta ≥ 0 <=> (3-m)^2 - 4( 3-2m) ≥ 0 <=> m^2 +2m-3 ≥ 0 ( ^ là mũ) 
giải bpt mới tìm được đó ta đc : m ≤ -3 hoặc m ≥ 1 
b, * Xét m-1=0 <=> m=1 => thay m=1 vào pt thì pt có 1 nghiệm là 1/8 (1) 
* Xét m-1 ≠ 0 <=> m ≠ 1 
=> pt có nghiệm khi denta' ≥ <=> (m+3)^2 - (m-1)(-m+2) ≥0 <=> 2m^2 +3m+11 ≥ 0 (*) 
-> bpt (*) có denta < 0 nên nó luôn đúng với mọi m ≠1 -> denta của pt đã cho luôn > 0 với mọi m ≠ 1 (2) 
từ (1) (2) => với mọi m pt luôn có nghiệm </span>
6 0
3 years ago
The sum of √12 and √3 is
forsale [732]

Step-by-step explanation:

You're going to break√12 into ✓4 and √3 because 4*3 = 12. Square rooting 4 will give you two, and now you can add since the argument of the roots are the same.

8 0
3 years ago
How many pencils did kyle purchase?
Anika [276]

Answer:

he purchased 12 pencils

Step-by-step explanation:

1.24x12=14.88

14.88-20= 5.12

also this kid i knew has the same pfp

7 0
2 years ago
For what value of b is y = 4 a solution to the equation y + 2 = by +8
Aleksandr [31]

b = -0.5

4 + 2 = - 0.5 * 4 + 8

6 = -2 + 8

6 = 6

Which is true, Therefore the answer is -0.5

5 0
3 years ago
Read 2 more answers
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