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Crank
2 years ago
15

Selena has $10 in her bank account and adds $10 of her allowance each month. Cooper has $100 in his account and spends $20 per m

onth on playing cards. How many months will it take for Selena and Cooper to have the same amount in their accounts? How much money will they each have at that time?
Solve using tables

Solve using graphs

Solve using substitution

Solve using elimination


I need this problem answered in every way listed, but if you only say one way that would help me so much!


Also please provide a step by step explanation or something like that if you can.


Thank you in advance :)
Mathematics
2 answers:
maxonik [38]2 years ago
7 0

Answer:

They will never have the same amount.

Step-by-step explanation:

Unless you use a number as a point "." then they will never have the same number. Sorry if this doesn't help you

jeka57 [31]2 years ago
3 0
Selina and cooper with both have $40 in their bake account at the same time in month 3 with Selina adding $10 each month and Copper taking $20 away each month.
STEP-BY-STEP
Month 1. Selina- adds $10= $20
Month 1. Cooper- takes $20= $80
Month 2. Selina - adds 10=$30
Month 2. Cooper- takes $20= $60
Month 3. Selina- adds $10= $40
Month 3. Cooper-takes $20= $40
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QUESTION 10
adelina 88 [10]

Answer:

Step-by-step explanation:

A = L * W

A = 22

L = 2x + 1

W = 3x + 1

now we sub

22 = (2x + 1)(3x + 1)

22 = 6x^2 + 2x + 3x + 1

22 = 6x^2 + 5x + 1

6x^2 + 5x + 1 - 22 = 0

6x^2 + 5x - 21 = 0 <======part A

(3x + 7)(2x - 3) = 0

3x + 7 = 0          2x - 3 = 0

3x = -7               2x = 3

x = -7/3              x = 3/2

I believe that x = -7/3 is an extraneous solution because when u plug it into ur length and width u get a negative number....and I dont think the sides of ur rectangle have negative values, however, it does work in ur equation and it equals 22 when multiplied...so I am not 100% sure

length = 2x + 1.......2(3/2) + 1........3 + 1 = 4

width = 3x + 1......3(3/2) + 1......9/2 + 1......9/2 + 2/2 = 11/2 (or 5.5) meters <===

6 0
3 years ago
Describe how to convert 2 liters per hour to milliliters per second. First convert liters to milliliters by multiplying by . The
aleksandrvk [35]
<span>First convert liters to milliliters by multiplying by 1000 mL/L . Then convert hours to seconds by dividing by 3600 seconds/hr. </span>

&#10;\frac{2 L}{1Hr}  * \frac{1000mL}{1L} *  \frac{1Hr}{3600sec} = \frac{5mL }{9sec}
7 0
2 years ago
Can Someone Please Help Me With This, Thanks! :)
Murrr4er [49]

Answer:

405

Step-by-step explanation:

So he built 5/9 of the wall, than added the extra 180 bricks to finish the wall.

so 5/9 + 180 = 9/9

so 180 = 4/9 Because 5/9 + 4/9 = 9/9

So to figure out how many bricks are in the wall we want to know what 1/9 of bricks equals and to work this out we need to divide 180 by 4

which equals 45.

Now we know that 1/9 = 45

so now to figure out what 9/9 is just multiply 45 by 9 which equals 405

7 0
1 year ago
Read 2 more answers
Change the equation of the circle x^2+14x+y^2-10y=14x 2 + 14 x + y 2 − 10 y = 14 into center-radius form of a circle.
jonny [76]

Answer:

The answer to your question is      (x + 7)² + (y - 5)² = 88

Step-by-step explanation:

Equation

                     x²  +  14x  +  y²  - 10y   =  14

Complete perfect trinomial squares

                     x² + 14x + (7)² + y² - 10y + (5)² = 14 + (7)² + (5)²

Simplify

                     x² + 14x + (7)² + y² - 10y + (5)² = 14 + 49 + 25

                     x² + 14x + (7)² + y² - 10y + (5)² = 88

Factor

                     (x + 7)² + (y - 5)² = 88   This is the equation in the form

                     center-radius

7 0
3 years ago
A play was attended by 984 persons. 75% of them were adults how many adults attend
Ierofanga [76]

Answer:

738

Step-by-step explanation:

984 ÷ 100 = 9.84

9.84 × 75 = 738

75/100

5 0
3 years ago
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