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:
The interquartile range for December should be 21 minus 18 = 3.
Step-by-step explanation:
i just took the test
2b + 6
2(b+3)
if you distribute 2(b+3), you get 2b+6
No they are not the the same. 3/2 = 1.5 and 3/4 = .75
Answer:
QT = 16
Step-by-step explanation:
ΔQRS ~ ΔQRT
In similar triangles, corresponding angles are in same ratio.
Cross multiply,
QT * 25 = 20 * 20
