80+70=150
270/150=1.8 hours before the two trains are 270 miles apart
☺☺☺☺
Answer:
9 7/8
Step-by-step explanation:
solution by separating parts:
1) rewrite equation with parts separated
= 6 +1/4 + 3 + 5/8
2) solve whole number parts
6 + 3 = 9
3) solve fraction parts
1/4 + 5/8 = ?
- find the LCD of 1/4 and 5/8 and rewrite to solve
LCD = 8
2/8 + 5/8 = 7/8
combining the whole and fraction parts:
9 + 7/8 = 9 7/8
Answer:
603
Step-by-step explanation:
The rate of change is found by
rate of change = f(b) -f(a)
------------
b-a
We need to find the rate of change for the interval 7,9 and 4,6
We know b= 9 and a = 7
f(9) -f(7)
------------
9-7
3878-1852
----------------
9-7
2026
-------
2
1013
We know b= 6 and a = 4
f(6) -f(4)
------------
6-4
1178-358
---------------
6-4
820
------
2
410
It asks how much greater, that means subtraction
1013-410
603
Answer:
1) Given, 2) Inverse property of addition, 3) Commutative property/Identity property of addition, 4) Inverse property of multiplication, 5) Identity property of multiplication/Result.
Step-by-step explanation:
In this exercise we present what real number properties are used in each step of the given procedure with its respective explanations:
1) ![37\cdot 2\cdot \left[(-5)+5+\frac{1}{2} \right]](https://tex.z-dn.net/?f=37%5Ccdot%202%5Ccdot%20%5Cleft%5B%28-5%29%2B5%2B%5Cfrac%7B1%7D%7B2%7D%20%5Cright%5D)
<em>Given</em>
2) 
<em>Inverse property of addition</em>
The inverse property of addition states that:
, 
3) 
<em>Commutative property/Identity property of addition</em>
The commutative property of real numbers states that:
, 
The identity property of addition of real numbers states that:
, 
4) 
<em>Inverse property of multiplication. </em>
The inverse property of real numbers states that:
, 
5) 
<em>Identity property of multiplication/Result.</em>
The identity property of multiplication of real numbers states that:
, 
The price of the hot dogs is $1.50 and $1 for soft drinks.
$9(6 hot dogs)+$4(4 soft drinks)=$13
$4.50(3 hot dogs)+$4(4 soft drinks)=$8.50
