Answer:
Given 7b²-21b-273=7, the solutions are x1 = 8 and x2 = -5.
Step-by-step explanation:
Given 7b²-21b-273=7, first you need to equal zero. So
7b²-21b-273-7=0 ⇒ 7b²-21b-280 = 0
The secon step is to find the solutions applying Bhaskara´s formula x = (-b ± √(b²-4×a×c))/2×a
Where a=7, b= -21 and c= -280
After you identified each term, you have to replace it on the formula so....
x = (21 ± √(21² - 4×7×(-280)))/2×7 ⇒ x = (21 ± √(441 + 7840))/14 ⇒ x = (21 ± √8281)/14
Then you will obtain two values for x, called x1 = 8 and x2=-5.
The picture is all laggy
Can you upload it one more time
Answer:
37.5in
Step-by-step explanation:
you add all the outer lengths up. the altitude doesn't count.
12+11.5+14= 27.5. Hope this helps.
So just take 2 prime numbers that are greater than 7 and multiply them gotoeher
prime numbers can be evenly divided by 1 and themselves
9 is not prime becuase it can be divided by3 and get 3
11 is prime becua seit can be only divided by 11
so some numbers prime that are greater than 7
11,13,17,19
let's pick the smaller ones for easy multipy
11 times 13=143
one such number is 143
Answer:
1. $0.48
2. $0.52
3. $0.53
Step-by-step explanation:
12/ $25
24/$46
50/$94
hope this helps