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Contact [7]
3 years ago
14

Solve the following system of equations. In other words, which  values for x and y make both equations true? 

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
3 0
I'm assuming the two equations are as follows:
y = 5x
7x + 2y = -17

You can substitute 5x for y in the second equation since they are equivalent. Remember that whatever you do to one side you must do to the other as well.
7x + 2y = -17
7x + 2(5x) = -17
7x + 10x = -17
17x = -17
17x /17 = -17 /17
x = -1

Now we sub in the value we have for x to find y:
y = 5x
y = 5(-1)
y = -5

We now check that both answers are right by substituting them both into the second equation:
7x + 2y = -17
7(-1) + 2(-5) = -17
-7 + (-10) = -17
-17 = -17

And it looks like it works! So x = -1, and y = -5. Hope this helps! :)
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Find the slope and y intercept
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Answer:

Slope: 1/2

y-intercept: -2

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3 years ago
The function d = 8f + 24 represents the monthly cost d (in dollars) of a group of f members joining the fitness club. a. Identif
oee [108]

Answer:

D represents the dependent variable: the monthly cost in dollars is your independent variable

F represents the independent variable: the number of members joining the fitness club

Step-by-step explanation:

The amount of money depends on how many members come and join the fitness club because more money is spent more with more members

7 0
3 years ago
I bought 6 packs of gummy bears. There were 25 gummy bears in each bag and 20% were yellow. Another 10% were white. How many mor
Vinvika [58]

Answer:

15 (I think)

Step-by-step explanation

6 x 25 = 150

20% of 150 = 30

10% of 150 = 15

30 - 15 = 15

<em>Sorry if this is wrong.</em>

<em>Bye, have a great day/night.</em>

3 0
2 years ago
Read 2 more answers
Someone please answer this for me.​
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the answer is 83 degrees

3 0
3 years ago
This exercise uses the population growth modet.
-BARSIC- [3]

The following represents the value :

a) n(t) = 12e^{0.011t}<u />

b) The estimate for the population in 2015 is of 12.7 million.

c) The fish population will reach 14 million after 14 years.

d) The sketch is given at the end of this answer.

<h3>How to calculate how many years will the fish population reach 14 million? </h3>

Item a:

The exponential model is:

n(t) = n(0)e^{rt}

In which:

n(0) is the population is 2010.

r is the growth rate, as a decimal.

Population of 12 million, thus n(0)  =12

Growth rate of 1.1%, thus r = 0.011

Thus, the model is:

n(t) = 12e^{0.011t}

Item b:

2015 is 2015 - 2010 = 5 years after 2010, thus this is n(5).

n(5) = 12e^{0.0115} = 12.7

The estimate for the population in 2015 is of 12.7 million.

Item c:

This is t for which n(t) = 14, thus:

n(t) = 12e^{0.011t}<u />

14 = 12e^{0.011t}

e^{0.011t} = 14/12

In e^{0.011t} = In 14/12

t = In 14/12/0.011

t = 14

The fish population will reach 14 million after 14 years.

Item d:

At the end of this answer, the sketch is given.

The complete question is : The population of a certain species of fish has a relative growth rate of 1.1% per year. It is estimated that the population in 2010 was 12 million. a. Find an exponential model n(t)= no e^rt for the population t years after 2010. b. Estimate the fish population in the year 2015. c. After how many years will the fish population reach 14 million? d. Sketch a graph of the fish population.

To learn more about fish population refer to :

brainly.com/question/29490771

#SPJ4

3 0
1 year ago
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