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Gala2k [10]
2 years ago
15

How do you solve equations by substitution​

Mathematics
1 answer:
Jet001 [13]2 years ago
4 0

Answer: The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

Step-by-step explanation:

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Which equation would you want to represent your bank account? <br> y=7x-4 <br><br> 7y+2x=6
Artyom0805 [142]

Answer:

y=7x-4

Step-by-step explanation:

when you put the other equation into y=mx+b form, it has a negative slope

7 0
3 years ago
What is the smallest, positive integer value of x such that the value of f(x) = 2x + 3 exceeds the value of g(x) = 50x + 5?
weeeeeb [17]
F(x) > g(x)
2^x + 3 > 50x + 5

for x = 3 , f(3) > g(3)
11 > 155 (false)

for x = 10 , f(10) > g(10)
1027 > 505 (true)

for x = 9 , f(9) > g(9)
515 > 455 (true)

for x = 8 , f(8) > g(8)
259 > 405 (false)

the smallest,positive integer value of x is 9 since the value of 9 is the last number to exceeds g(x)
7 0
3 years ago
Help me with this question this was supposed to be due yesterday!
Inessa05 [86]

Answer: Both the mean and median decreased.

Step-by-step explanation:

The addition of the 500 lb baby elephant will have a huge impact on the mean, since you'll be finding the average (adding all numbers then dividing). So the only logical answer would be the chosen. The median will most likely either decrease or stay the same, but since staying the same isn't an option for the median, it's most likely going to be decrease.

[I do apologize in advance if it's wrong, and next time try submitting work on time :)) Hope I helped!]

8 0
3 years ago
Can anyone solve this please it's an urgent ​
Vinil7 [7]

Answer:

missing element is 6

Step-by-step explanation:

Given

f(x) = x³ - 2 ( substitute x = 2 )

f(2) = 2³ - 2 = 8 - 2 = 6 ← missing element

ordered pair is (2, 6 )

6 0
3 years ago
Read 2 more answers
Which is a better price: 5 for $1.00, 4 for $0.85, 2 for $0.25, or 6 for $1.10?
Angelina_Jolie [31]

Answer:

2 for $0.25

Step-by-step explanation:

1.10/ 6= .20 (rounding)

1.00/ 5= .20

0.85/ 4= .21

0.25/ 2= .13 (rounding)

4 0
3 years ago
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