For an instance, i stands for the money that you have, and b stands for the money that brother has.
An equation system based on the problem would be
i + b = 42 (equation 1)
i = 3b (equation 2)
Use substitution method to solve the problem
substitute 3b into i in the equation 1
i + b = 42
3b + b = 42
4b = 42
b = 42/4
b = 10.5
substitute the value of b into the equation 1
i = 3b
i = 3(10.5)
i = 31.5
You have $31.5 and your brother has $10.5
Answer: A' (5,9)
Step-by-step explanation:
1. You have that the translation is ⇒ and the coordinates of A is (-2,5). Then:
⇒
2. As you can see, -5 is 7 units below of the line of reflection , therefore, you can know the coordinates of A' as following:
3. Then, the coordinates of A' is (5,9)
answer:
<em>∠F = 74°</em>
explanation:
<u>( Find the value of x )</u>
<u></u>
<em>∠</em> E + <em>∠</em> F = 180°
9x - 38 + 2x + 42 = 180
11x + 4 = 180
11x = 176
x = 16
<u>( Find </u><u><em>∠</em></u><u> F using x )</u>
<em />
<em>∠ </em>F = 2x + 42
x = 16
<em>∠</em> F = 2(16) + 42
<em>∠ </em>F = 32 + 42
<em />
<em>∠F = 74°</em>
Answer:
40 years
Step-by-step explanation:
Hulian and Thomas together is 65 years
let us suppose hulian is X
now, so Thomas is x+15
so x+x+15=65
so 2x = 65-15
2x=50
x=25
Hulian is 25
and Thomas is 25+15=40