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nata0808 [166]
3 years ago
11

Type​ A, type​ B, and type C lightbulbs are lasting longer today than ever before. On​ average, the number of bulb hours for a t

ype C bulb is 18 times the number of bulb hours for a type B bulb. The number of bulb hours for a type A bulb is 1100 less than the type B bulb. If the total number of bulb hours for the three types of lightbulbs is 78900​, find the number of bulb hours for each type.
Mathematics
1 answer:
NNADVOKAT [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Let and be independent random variables representing the lifetime (in 100 hours) of Type A and Type B light bulbs, respectively. Both variables have exponential distributions, and the mean of X is 2 and the mean of Y is 3.

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-5x+13y=-7<br> 5x+4y=24 system of equations
Lostsunrise [7]
The answer is (4,1)
Add both equations you get
17y = 17
y = 1
Substitute y = 1 into the second equation
5x+4(1) = 24
5x = 20
x = 4
4 0
3 years ago
How do I solve this?​
Scorpion4ik [409]

the answer would be B ( 4,-5) because when I put them on a graph it came up with the right one

7 0
2 years ago
An investment earns 3% compounded monthly. Find the value of an initial investment of
vitfil [10]

Answer:

5,000

Step-by-step explanation:

5 0
3 years ago
Find the x-intercept and the y-intercept without graphing. Write the coordinates of each intercept.
ANEK [815]

Answer:

Point of x-intercept: (2,0).

Point of y-intercept: (0,6).

Step-by-step explanation:

1. Finding the x-intercept.

This point is where the graph of the function touches the x axis. It can be found by substituting the "y" for 0. This is how you do it:

y=-3x+6\\ \\-3x+6=0\\ \\-3x=-6\\\\x=\frac{-6}{-3} \\ \\x=2

Hence, the point of x-intercept: (2,0).

2. Finding the y-intercept.

This point is where the graph of the function touches the y axis. It can be found by substituting the "x" for 0. This is how you do it:

y=-3(0)+6\\ \\y=6

Hence, the point of y-intercept: (0,6).

7 0
1 year ago
Read 2 more answers
(83.9x10^12)(2.87x10^-3)/ 3.76x10^2
RideAnS [48]
<u>(83.9 × 10^12)(2.87 × 10^-³)</u>
             3.76 × 10²
<u>(83,900,000,000,000)(0.00287)</u>
                   376
 <u>240,793,000,000</u>                                 
           376
640,406,914.9


8 0
3 years ago
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