1 Expand
1.4t-0.4t+1.24=5.8

2 Simplify 1.4t-0.4t+1.241.4t−0.4t+1.24 to t+1.24t+1.24
t+1.24=5.8

3 Subtract 1.241.24 from both sides
t=5.8−1.24

4 Simplify 5.8-1.245.8−1.24 to 4.564.56
t=4.56

7 0

3 years ago

Select the correct expanded form for each expression. 155 = . (0.17)3 = .

Nana76 [90]

FIRST ONE b SECOND d

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A coin bank contains only quarters and dimes. The total value of the coins in the bank is $8.80. If the dimes were quarters and

masha68 [24]

Answer:

18 dimes

Step-by-step explanation:

Let the number of dimes be d and quarters be q

The value is $8.80 = 880¢, so:

10d + 25q = 880 ⇒ 2d + 5q = 176

If the dimes were quarters and the quarters were dimes, the coins' total value would be $7.30 or 730¢

25d + 10q = 730 ⇒ 5d + 2q = 146

Now we have 2 equations. Solving the system by elimination, subtract 5 times the second equation from twice the first equation:

2(2d + 5q) - 5(5d + 2q) = 2(176) - 5(146)
4d - 25d = -378
-21d = -378
d = -378/-21
d = 18

8 0

3 years ago