28 + 29 + 42 = 28 + 42 + 29 = 99
Commutative property: a + b = b + a
A similarity transformation is one or more rigid transformations (reflection, rotation, translation) followed by a dilation. When a figure is transformed by a similarity transformation, an image is created that is similar to the original figure.
Answer:
Một cm3 của khối kim loại đó cân nặng số gam là:
22,4:3,2=7(g)
Một khối kim loại cùng chất có thể tích là 4,5cm3 cân nặng số gam là:
7x4,5=31,5(g)
Step-by-step explanation:
75x + 90(15-x)=88(15)
75x+1350-90x = 1320
-15x + 1350 = 1320
-15x= -30
x=2
the amount of 75 octane is 2 gallons
the amount of 90 octane is 13 gallons
Hope this helps.
Answer:
A value, or values, we can put in place of a variable (such as x) that makes the equation true.
Example: x + 2 = 7
When we put 5 in place of x we get: 5 + 2 = 7
5 + 2 = 7 is true, so x = 5 is a solution
