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maw [93]
3 years ago
15

Solve algebraically, the system of equations, please and thank you!

Mathematics
1 answer:
Masja [62]3 years ago
6 0

Answer:

So x should equal 1/2, and y should equal -1.

Hope this helps :)

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Would the following situation be better represented by a linear function or an exponential function:
anastassius [24]

Answer:

Exponential function

Step-by-step explanation:

It is better if the situation on ground is represented by an exponential equation.

This is because, since we have the number of teams reducing by exactly half at every playoff round, this means that we have a base of 2 which can be raised to a negative power since we are talking about a decrease.

We can then place the number of rounds as an adjoining power to what the two is raised and this easily will get us the number of teams which is eventually decreased at every point of the playoffs

4 0
3 years ago
Membership at a local gym increased from 500 members to 800 members in one year. What was the percent of increase?
Tomtit [17]

Answer: 60%

Step-by-step explanation:

(300/500)*100

3 0
4 years ago
The annual interest on a $14,000 investment exceeds the interest earned on a $7000 investment by $595 . The $14,000 is invested
Stella [2.4K]

Answer:

x= 8.00 Interest rate on $14000

y= 7.50 Interest rate on $7000

Step-by-step explanation:

Let interest rate of $14000 be x%

and Interest rate for $7000 be y %

According to the first condition

14000 * x% - 7000 * y% = 595

multiply by 100

14000x-7000y = 59500

/700

20x-10y=85.................(1)

II condition

x%=y%+0.5%

x=y+0.5

x-y=0.5..................................(2)

solve (1) & (2)

20 x -10 y = 85 .............1

Total value

1 x -1 y = 0.50 .............2

Eliminate y

multiply (1)by 1

Multiply (2) by -10

20.00 x -10.00 y = 85.00

-10.00 x + 10.00 y = -5.00

Add the two equations

10.00 x = 80.00

/ 10.00

x = 8.00

plug value of x in (1)

20.00 x -10.00 y = 85.00

160.00 -10.00 y = 85.00

-10.00 y = 85.00 -160.00

-10.00 y = -75.00

y = 7.50

x= 8.00 Interest rate on $14000

y= 7.50 Interest rate on $7000

7 0
4 years ago
Can someone help me on this question? Thank you
Sveta_85 [38]
I'm not 100% sure but this is how i worked it out
1/3 x 114/1 = 38
114 - 38 = 76 hydrogen
Hope this helps
6 0
3 years ago
200% of d is 11 what is D
olga nikolaevna [1]

If 200 percent is 11 then 100 is 11/2 which is exactly 5.5.

3 0
3 years ago
Read 2 more answers
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