Answer:
using Gaussian elimination method of matrix
#3: A home security company provides security systems for $5 per week plus an installation fee. The total fee for 12 weeks of se
1 answer:
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Answer:
The answer is B) 200mm. Check the image for the workings
Answer:
C) (-6,0)(2,0)
For x-intercept, f(x) = 0:
Answer:
9, 30, and 15.
Step-by-step explanation:
Let the three numbers be a, b, and c.
The sum of them is 54. So:
The third number is 6 more than the first. In other words, c=a+6.
The second number is twice the third. In other words, b=2c.
Let’s write the second number in terms of a. Since b=2c, this means that b=2(a+6).
Let’s substitute them into our equation. So:
Solve for a. Distribute:
Combine like terms:
Subtract 18 from both sides:
Hence, the value of a is:
So, the first number is 9.
The third number is 6 more than the first, so the third number is 15.
The second number is twice the third. So, the second number is 30.
Therefore, our numbers are:
9, 30, and 15.