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allochka39001 [22]
3 years ago
7

5a+4b=65 elimination substitute and check

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
4 0

Answer:

a=13 - 4b/5

b=65/4-5a/4

Step-by-step explanation:

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What is the decay factor of the exponential function represented by the table?
Nina [5.8K]

Answer:

Option 2 is correct.

Step-by-step explanation:

We have been provided a table of values of an exponential function and we are asked to find out the decay factor of the function.

Upon looking at our table we can see that every time x increases by one our y value remains one-third of the previous value.

To find out decay factor we will subtract 1/3 from 1.

1-\frac{1}{3} =\frac{3-1}{3} =\frac{2}{3}

Therefore, decay factor of the exponential function is \frac{2}{3} and option 2 is correct choice.

6 0
4 years ago
Read 2 more answers
Supposed a certain game is fair and costs $4 if you lose and has a net payoff of $9 if you win. The only
Gekata [30.6K]

Answer:

32.5% Win Rate

Step-by-step explanation:

I got this answer by first:

( 9 ) * x + ( -4 ) * ( 1 - x ) = 0

9x - 4 + 4x = 0

13x = 4

then finally:

13/4 = 3.25 | And to get that into percent you multiply that by 10, giving you a 32.5% win rate. or 325 / 1000. Meaning you will win 325 out of 1000 games you play. Hope this helped!

4 0
3 years ago
A company has two large computers. The slower computer can send all the company's email in 60 minutes. The faster computer can c
Lelu [443]

Answer:

If both computers are working together, it will take 24 minutes to do the job

Step-by-step explanation:

It is given that,

There are two computers.The slower computer can send all the company's email in 60 minutes.

The faster computer can complete the same job in 40 minutes

<u>To find the LCM of 40 and 60</u>

LCM (40, 60) = 120

<u>To find efficiency of 2 computers</u>

Let x be the efficiency of faster computer and y be the efficiency of faster computer

x = 120/40 = 3

y = 120/60 = 2

then, x + y = 3 + 2 = 5

Therefore efficiency of both the computer work together = x + y =5

<u>To find the time taken to work both the computer together</u>

time = 120/5 = 24 minutes

4 0
3 years ago
Find 8x+y when x=2 and y=5.
fgiga [73]

Answer:

21

Step-by-step explanation:

8x+y, when x=2 and y=5,

then 8*2+5. Because the 2 is right next to the 8, it isn't '82', but '8*2'

According to  PEMDAS, multiplication is done first, so

8*2= 16,

16+5, which is 16+5= 21

7 0
3 years ago
PLEASE HELP THIS IS DUE TODAY
laila [671]

Answer:

When I see an equation, I can make up a story that the equation might represent, explain what the variable represents in the story, and solve the equation.

I don't know the exact answer so I hope this helps

8 0
3 years ago
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