Ineed on this problem because its hard the prolbem is 4 divde by 82.4

0.0485

Step-by-step explanation:

Shift the decimal points of both 4 and 82.4 to the right by 1 decimal place.

(This is needed to convert 82.4 to 824, since long division must divide by a whole number.)

\frac{40}{824}

824

40

2 Set up the long division.

824|40

3 Calculate 4000 ÷ 824, which is 4 with a remainder of 704.

. 4

824|40.

32.96

7.04

4 Bring down 0, so that 7040 is large enough to be divided by 824.

. 4

824|40.

32.96

7.040

5 Calculate 7040 ÷ 824, which is 8 with a remainder of 448.

. 48

824|40.

32.96

7.040

6.592

448

6 Bring down 0, so that 4480 is large enough to be divided by 824.

. 48

824|40.

32.96

7.040

6.592

4480

7 Calculate 4480 ÷ 824, which is 5 with a remainder of 360.

. 485

824|40.

32.96

7.040

6.592

4480

4120

360

8 Therefore, 4 ÷ 82.4 ≈ 0.0485.

0.0485

Hope this helps ;)

i assume that by 5 you mean 5 gallons.

(20)(0.25) = 15

removing 15 gallons reduces the tank from 20 to 5.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0