3 years ago

You have a piggy bank a total of 72 coins in dime and quarters . If the piggy bank contains 10.80 how many dime are in the piggy

bank

1 answer:

5 0

$\text{Make a system of equations:}\\\\72=d+q\\\\10.80=0.10d+0.25q\\\\\text{Solve for d:}\\\\-0.25(72=d+q)\\\\10.80=0.10d+0.25q\\\\-18=-0.25d-0.25q\\\\10.80=0.10d+0.25q\\\\-7.20=-0.15d\\\\\text{Divide by -0.15}\\\\48=d\\\\\boxed{\text{48 dimes}}$

You might be interested in

Find the surface area of the prism.

8_murik_8 [283]

Answer:

148^2

Step-by-step explanation:

2(lb+bh+lh) = 2(4*5+5*6+4*6)=148 in^2

6 0

3 years ago

Read 2 more answers

Please help!!!!!!!!!

kotykmax [81]

10+6+9+13+7= 45

and divide it by 5

the answer is 9

8 0

3 years ago

Read 2 more answers

Ron Prentice bought goods from Shelly Katz. On May 8, Shelly gave Ron a time extension on his bill by accepting a $3,000, 8%, 18

Bad White [126]

Answer:

vsfyvsy stop! me off do is ask if em is everything ok well if the if the if the yr

7 0

3 years ago

Drag and drop an answer to each box to correctly explain the derivation of the formula for the volume of a pyramid.

Vadim26 [7]

The volume of a pyramid is one-third the volume of a prism.

The formula for the volume of a pyramid is V = 1/3Bh

5 0

3 years ago

Read 2 more answers

Find the value of x to the nearest tenth

xz_007 [3.2K]

Answer:

9.0

Step-by-step explanation:

x = 7 / cos 39°

= 7 / 0.7771

= 9.0

4 0

3 years ago