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malfutka [58]
3 years ago
14

Translate in to Algebraic equation. I had some money and I gave away $20 the first day, gained 3 times my original amount on the

second day, and noticed that I now have $80.
Mathematics
1 answer:
prohojiy [21]3 years ago
5 0
Let x represent the amount of money you originally had. The algebraic expression would be: x-20+3×=80.
If you want to solve the equation, it would be: 4x=100, and x=100÷4, which equals 25. So your original money was $25.
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Given r=3 and a center of (3,5)? Find the equation of the circle in standard and general form.
alukav5142 [94]

9514 1404 393

Answer:

  • (x -3)^2 +(y -5)^2 = 9
  • x^2 +y^2 -6x -10y +25 = 0

Step-by-step explanation:

The standard form equation for a circle of radius r and center (h, k) is ...

  (x -h)^2 +(y -k)^2 = r^2

For radius 3 and center (3, 5), this is ...

  (x -3)^2 +(y -5)^2 = 9 . . . . standard form equation

Expanding this and subtracting the constant on the right gives ...

  x^2 -6x +9 +y^2 -10y +25 -9 = 0

  x^2 +y^2 -6x -10y +25 = 0 . . . . general form equation

8 0
2 years ago
YA
True [87]

Answer:

I don't understand the question, please be more descriptive

7 0
2 years ago
Read 2 more answers
Hey can you please help me posted picture of question
enyata [817]
If the total area of a dartboard 30 000 mm² and the area of the target is 700 mm²
 The probability of obtaining a target can be written as:
 P = 700 mm² / 30 000 mm²
 P = 0.0233
 P = 2.3%
 Therefore the correct answer is option B.
 This, assuming the shooter has no experience and rolls the dart randomly within the dartboard area.
4 0
3 years ago
Maxine can swim 240 meters in 4 minutes. What is Maxine's unit rate?
BabaBlast [244]
Answer: A) 18.2 minutes
B) 4.5 minutes.
Step-by-step explanation:
A) Maxine can mow one lawn in 24 minutes, so the rate of work is:
1/24 of the lawn per minute.
Sammie can mow one lanw in 36 minutes, so the rate of work is:
1/36 of the lawn per minute.
The amount of the lawn that each has left to lawn by the minute x is:
Maxine = 1 -(1/24)*x
Sammie = 1 - (1/36)*x
we want to find the value of x such that:
2*(1 - (1/24)*x) = 1 - *(1/36)*x
which means that the amount that Sammie has left is two times the amount that Maxine has left to mow.
2 - (1/12)*x = 1 - (1/36)*x
2 - 1 = (1/12 - 1/36)*x
1/0.055 = x = 18.2
by the minute 18.2
B) Similar to before, here the rates are:
For Maxine, R = 1/6
For Sammie, R = 1/9
The amount they have left to mow by minute x is:
Maxine = 1 - (1/6)*x
Sammie = 1 - (1/9)*x
We want to solve, similar to before.
2( 1 - (1/6)*x) = 1 - (1/9)*x
2 - (1/3)*x = 1 - (1/9)*x
2 - 1 = (1/3 - 1/9)*x
1 = (2/9)*x
1*9/2 = x = 4.5
So here the solution is 4.5 minutes. Hope this helps
5 0
2 years ago
Jessie set up a lemonade stand for three days. on saturday she sold 10 2/3 gallons of lemonade. on Sunday, she sold 3 1/3 gollan
alina1380 [7]
11 1/3 gallons of lemonade

hope this helped :)
4 0
3 years ago
Read 2 more answers
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