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Masteriza [31]
3 years ago
14

How would you solve 3x+2y=550 and x=4/5y using the substitution method

Mathematics
1 answer:
Katena32 [7]3 years ago
7 0
Put 4/5y in the place of x.
So it would be 3(4/5)y+2y=550
Then, Solve
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(7,-5) and (6,r) m=0
valina [46]

Answer:

is right answer = 2 is a correct answer

3 0
2 years ago
Josh volunteered at the zoo for 14 hours in one month. This was 3 1/2 times as many hours as Gina volunteered. How many hours di
jonny [76]
This one you can't really make a formula for or anything, but it's fairly simple to figure out, with a bit of guess and check.
14 is really close to 15, but that's bigger, so let's try a smaller number that would work.
It has to be divisible by 2, because you've got a whole number that is 3 1/2 times the other number. (1/2 of a whole number means it's divisible by 2).
10 is divisible by 2,
10 ÷ 2 = 5
But, 10 x 3 = 30 which is much bigger than 14.
So, we've got to start with a smaller number.
Let's try something really small, like 4. We could try 2, but 2 x 3 = 6, which, even with 1/2 of 2, isn't nearly close to 14.
Now, 4 x 3 = 12
That's quite close to 14.
And 1/2 of 4 is 2.
All we do now is add 12 to 2 and see if it works.
12 + 2 = 14
14 = 14
This one works.
That means that Gina volunteered for 4 hours, because 3 1/2 x 4 = 14.
5 0
3 years ago
Read 2 more answers
At which angle will the hexagon rotate onto itself? 60° 90° 120° 180°
Irina18 [472]
The hexagon will rotate 60
4 0
3 years ago
Read 2 more answers
K/5+14=13<br> what is the answer and how you got the answer.
abruzzese [7]

Answer:

\frac{k}{5+14} = 13 : k = 247\\

Step-by-step explanation:

\frac{k}{5+14} = 13

Multiply both sides by 19:

\frac{19k}{5+14} = 13 * 19

Simplify:

k = 247

Hope I helped, if so may I get brainliest and a thanks?

Thank you, have a good day! =)

6 0
2 years ago
Helppppp this is timed
telo118 [61]

Answer: In order to convert Celsius to Fahrenheit, you will need to use this formula: F = 9/5C + 32. Therefore, you will need to solve for C or substitute values and solve in that manner. To find Fahrenheit temperature for -20 degrees Celsius, you can just plug it into the formula

Step-by-step explanation:

6 0
3 years ago
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