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AURORKA [14]
3 years ago
7

Store A: $25 for a 45 minute lesson Store B: $30 for a 1 hour lesson Store C: $45 for a 1.5 hour lesson Store D: $80 for three 1

hour lessons Julie wants to purchase swim lessons for her son. There are four different stores that offer swim lessons. Based on the lowest cost per minute, which store has the BEST deal? A) Store A B) Store B C) Store C D) Store D
Mathematics
2 answers:
Vlada [557]3 years ago
8 0

Answer:

I believe its store d. Store B  30 x 3 is 90 too much money. Store C 45 x 3= well lazy but still more and 25 is less but less hours so your answer is D.


Vikentia [17]3 years ago
6 0

Answer: Store C by far, less money more time.


Step-by-step explanation:


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jarptica [38.1K]

Answer:

3 gallons

Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

100\%=100/100=1

20\%=20/100=0.20

60\%=60/100=0.60

we know that

(1)(x)+(0.20)(3)=(0.60)(x+3)

solve for x

x+0.60=0.60x+1.80

x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in  order to get a 60% acid solution

7 0
3 years ago
X^2-8x+10=-4 quadratic equation written in standard form
ASHA 777 [7]
Rewriting the formula in standard form would be x^2-8x+14=0
3 0
3 years ago
Tiffon makes 35% commission on the websites that he sells to businesses. If he sells $3,500 worth of websites, what is his commi
Bogdan [553]

Answer:

1225

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Find S18 for geometric series given a5=-6 and a2= -48
Ganezh [65]

an = a1r^(n-1)

a5 = a1 r^(5-1)

-6 =a1 r^4


a2 = a1 r^(2-1)

-48 = a1 r


divide

-6 =a1 r^4

----------------    yields   1/8 = r^3      take the cube root  or each side

-48 = a1 r                     1/2 = r


an = a1r^(n-1)

an = a1 (1/2)^ (n-1)

-48 = a1 (1/2) ^1

divide by 1/2

-96 = a1


an = -96 (1/2)^ (n-1)


the sum

Sn = a1[(r^n - 1/(r - 1)]

S18 = -96 [( (1/2) ^17 -1/ (1/2 -1)]

       =-96 [ (1/2) ^ 17 -1 /-1/2]

      = 192 * [-131071/131072]

 approximately -192

     

       

     

3 0
3 years ago
A building has 4 offices. There are 4 people in each of the offices. Each person has 4 chairs. How many chairs are in the buildi
vfiekz [6]
You'd just have to cube the 4 
4x4x4=64
3 0
3 years ago
Read 2 more answers
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