Answer:
Option A
A B C D
Step-by-step explanation:
Line of symmetry means that line which cut anything into two two halves.
It could horizontal, vertical and diagonal.
A - vertical line of symmetry
B - horizontal line of symmetry
C - horizontal line of symmetry
D - horizontal line of symmetry
And it is an example of Spherical symmetry:
If the organism is cut through its centre, the resulting parts look the same.
Although the equation didn't come out right, yes when two number are covered in parenthesis it means to multiply them
E.g. (2)(2) or (1/2)(1/2)
Answer:
6
Step-by-step explanation:
There are 2 triangular bases, so there are 6 vertices.
One company wants $10 per 3.5 hours, so they want 10 / 3.5 ≈ 2,86 dollars per hour (after rounding to the closest hundreths).
Second company wants $1.25 per half an hour, so they want 2 * 1,25 = 2,50 dollars per hour.
The unit rate is 2,86:2,50
Answer:
Hulian's age is 7.
Thomas's age is 22.
Step-by-step explanation:
Let Hulian = h
Let Thomas = t
Set the system of equation:
h = t - 15
h + t = 29
Plug in t - 15 for h in the second equation:
(t - 15) + t = 29
Simplify. Combine like terms:
2t - 15 = 29
Isolate the variable, t. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 15 to both sides:
2t - 15 (+15) = 29 (+15)
2t = 44
Divide 2 from both sides:
(2t)/2 = (44)2
t = 44/2
t = 22
Plug in 22 for t in one of the equations:
h = t - 15
h = 22 - 15
h = 7
Hulian's age is 7.
Thomas's age is 22.
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