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max2010maxim [7]
3 years ago
9

How do I find the solution for this quadratic?

Mathematics
1 answer:
Ahat [919]3 years ago
3 0
Hello,
Please, see the attached file.
Thanks.

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The principal of a high school spent 1700 for X desk each and Y chairs at $25 each if he had bought half the number of desk in t
KatRina [158]

Answer:

25X + 25Y = 1700

25X + 100Y = 3200

Step-by-step explanation:

Given that the principal of a high school spent $1700 for X desk and Y chairs at $25 each. Then, the equation will be

25X + 25Y = 1700 ....... (1)

If he had bought half the number of desk in twice the number of chairs he would have spent 1600. That is

25(X/2) + 25(2Y) = 1600

25X/2 + 50Y = 1600

Find the LCM and cross multiply

25X + 100Y = 3200 ........(2)

6 0
3 years ago
A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen per
FromTheMoon [43]
Your two equations are at the top, in the box is what each variable represents. Below the box is total liters of the 15%, which is going to equal the total liters for 10% plus the total liters for 25%. Make your percentages into decimals. There’s a total of 30 liters so, x+y needs to equal 30. Isolate a variable, I chose y, you can do either or (isolating x would be more math). Y is going to equal 30-x, substitute that for the Y in the second equation, then you need to distribute 0.25 into 30-x. Then it’s simple math, subtract 7.50 from both sides, add like gets, divide both sides by -0.15, making x=20.

8 0
2 years ago
Community coffee company wants a new flavor of cajun coffee. how many pounds of coffee worth $7 a pound should be added to 14 po
olga_2 [115]
14x4=56
5x14=70
70-56=14
14/7=2
8 0
3 years ago
I'd like some help, thanks!​
Otrada [13]
It is likely D I am not positive
7 0
3 years ago
Read 2 more answers
Using the numbers 2,0,1,9 in order what exoression do you make to equal 6
alexgriva [62]

Answer: 9-(0+1+2)


Step-by-step explanation:

We have given the numbers = 2,0,1,9

We can use addition and subtraction operation to the given numbers such that the answer will be equals to 6.

We can add 2 ,0 and 1 and then subtract from 9 , we will get 6.

So the required expression can be

9-(0+1+2)\\=9-(3)\\=9-3\\=6

hence, the required expression can be 9-(0+1+2)



6 0
3 years ago
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