Answer:
The answer is A
Hoped it helped <3 tell me if I am wrong
Step-by-step explanation:
hi brainly user! ૮₍ ˃ ⤙ ˂ ₎ა
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![\huge{ \rm{Answer:}}](https://tex.z-dn.net/?f=%5Chuge%7B%20%5Crm%7BAnswer%3A%7D%7D)
The roots of the equation are 7 and -4, because 7 - 4 = 3 and 7. - 4 = -28
Step-by-step explanation:
The positive number is equal to 7.
Assuming that the number is equal to "x" we have:
![\begin{gathered}x^2 = 3x + 28\\\\x^2 - 3x - 28 = 0\\\\a = 1\\\\b = -3\\\\c = -28\\\end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7Dx%5E2%20%3D%203x%20%2B%2028%5C%5C%5C%5Cx%5E2%20-%203x%20-%2028%20%3D%200%5C%5C%5C%5Ca%20%3D%201%5C%5C%5C%5Cb%20%3D%20-3%5C%5C%5C%5Cc%20%3D%20-28%5C%5C%5Cend%7Bgathered%7D)
By the sum and product method, we have:
![\begin{gathered}S = -b / a\\\\S = -(-3) / 1\\\\S = 3\\\\\end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7DS%20%3D%20-b%20%2F%20a%5C%5C%5C%5CS%20%3D%20-%28-3%29%20%2F%201%5C%5C%5C%5CS%20%3D%203%5C%5C%5C%5C%5Cend%7Bgathered%7D)
![\begin{gathered}P= c / a\\\\P = 28 / 1\\\\P = 28\\\\\end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7DP%3D%20c%20%2F%20a%5C%5C%5C%5CP%20%3D%2028%20%2F%201%5C%5C%5C%5CP%20%3D%2028%5C%5C%5C%5C%5Cend%7Bgathered%7D)
Our three numbers are...
3 3/10 = 3.3
3.1
3 1/4 = 3.25
So, if we order those from least to greatest, we have...
3.1, 3.25, 3.3
which, in the forms given, is...
3.1, 3-1/4, 3-3/10
4*1/2=2
288/2
144
her speed was 144 miles per hour
Answer:
4.1 and 4.2
Step-by-step explanation: