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Julli [10]
3 years ago
7

Need help solving for y​

Mathematics
1 answer:
alukav5142 [94]3 years ago
5 0

Answer:

I think it is 45 not for exactly sure if I'm right. But I think it is.

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Solve using substitution<br> y=3x-5<br> 2x+5y=-42
Paul [167]

Answer:

Solution point is (-1,-9)

Step-by-step explanation:

Put the value of y in the first equation into the second equation.

  • 2x + 5(3x - 5) = - 42            Remove the brackets on the left
  • 2x + 15x - 25 = - 42            Combine like terms on the left
  • 17x - 25 = - 42                     Add 25 to both sides
  • 17x - 25 + 25 = - 42 + 25    Do the addition
  • 17x = - 17                              Divide by 17
  • 17x/17 = -17/17                      Do the division
  • x = - 1    

=======

Solve for y

  • y = 3x - 6
  • x = -1
  • y = 3(-1) - 6
  • y = -3 - 6
  • y = - 9
6 0
3 years ago
30 coins consisting of quarters and dimes, which total is $5.70. How
Alex

Answer:

18 quarters

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Function f(x) represents the population of bacteria x hours after 9 a.m. What does f(2)-f(1) represent?
Kitty [74]

x = number of hours after 9 am (eg: x = 1 means 1 hr after 9 am, so 10 am)

f(x) = population count x hours after 9 am

f(1) = population count at 10 am (1 hour later)

f(2) = population count at 11 am (2 hrs after 9 am)

f(2) - f(1) represents the difference in population counts from 10 am to 11 am, or put another way, how much the population increased during that time interval.

4 0
3 years ago
Find the measure of
Paladinen [302]

Answer:

16

Step-by-step explanation:

If u use a protracter it will work

5 0
3 years ago
I NEED HELP ASAP GEOMETRY 10TH GRADE
kap26 [50]

Answer:

4

Step-by-step explanation:

1. AB:BC is 1:2

2. Add the 1 and the 2

(3)

3. Find the distance between -7 and 26

26-(-7) = 33

4. Divide the distance by 3

33/3 = 11

5. Find the distance from A---->B

-7 + 11 = 4

6 0
2 years ago
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