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xxMikexx [17]
3 years ago
13

Today each cookie costs 0.75 less than the normal price. Right now if you buy 7 of them it will only cost you 2.80.

Mathematics
1 answer:
Fiesta28 [93]3 years ago
5 0

Answer:

7 ( x - 0.75 ) = 2.80

Step-by-step explanation:

7 ( x - 0.75 ) = 2.80

7x - 5.25 = 2.80

7x = 2.80 + 5.25

x = 8.05/7

x = 1.15

------------------------------

1.15 - 0.75 = 0.4

(0.4)*7 = 2.8

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Shawna found coins worth $4.32. One- fourth of the found coins are pennies and one- sixth are quarters. The number of nickels fo
eduard

Answer:

8 quarters

12 nickels

12 pennies

16 dimes

Step-by-step explanation:

The trick is to ASSUME the dimes.

Start by thinking about the three explicit premises and the one implicit premise.

1) Quarters = 1/6 of total coins

2) Nickels = 1.5 the number of quarters

3) Pennies = 1/4 of total coins

Also, ASSUME an unknown number of dimes to fill in the gap.

48 Total Coins = $4.32

⅙ of 48 = 8 8 quarters = $2.00

1.5 x 8 = 12 12 nickels = $0.60

¼ of 48 = 12 12 pennies = $0.12

Add those coins = $2.72

Take the known total and minus this sum.

$4.32 - $2.72 = $1.60

16 dimes = $1.60

Thus, you have the following:

8 quarters (⅙ of total coins)   $2.00

12 nickels (1.5 the number of quarters) $0.60

12 pennies (¼ the number of total coins) $0.12    

+ 16 dimes     $1.60

Total Coins 48      $4.32

8 0
3 years ago
What must be added to 70 so it will divide exactly into five groups of 16
natulia [17]

Answer:

10

Step-by-step explanation:

x+70=16(5)\\\\x+70=80\\\\x=10

Therefore, the number is 10

5 0
2 years ago
Bethany s making trail mix with 3 cups of raisins for every 2 cups of peanuts
DaniilM [7]

Answer:

4 cups of raisins

3 cups of dates

6 cups of peanuts

and 2 cups of cashews

ratio cashews to raisins= 2:4

                                      = 1:2

ratio dates to peanuts= 3:6

                                   = 1:2

5 0
3 years ago
5) A qué % anual se prestó un capital de 1700 soles que en 1 año y 3 meses ha producido 255 soles de interés?
patriot [66]

Answer:

12%

Step-by-step explanation:

Interés simple = Principal × Tasa × Tiempo

Tasa = Interés simple / Principal × Tiempo

Principal = 1700 soles

Tiempo = 1 año y 3 meses

12 meses = 1 año

3 meses = 3/12 = 1/4 = 0.25

Tiempo = 1.25 años

Tasa = 255 /1700 × 1.25

= 0.12

= 0.12 × 100

= 12%

7 0
3 years ago
Find the unknown angle measures.<br> А<br> с<br> 730<br> B<br> mZA-<br> m2-0<br> O
Ksju [112]

Answer:

angle a is 73 and angle c is 180-(73+73)=34

6 0
3 years ago
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