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Answer:
Then, Jane had twice as much money as her sister. How much money did their parents give each of them?
Let x = amt given to them
Solve this equation for x
7 + x = 2(2 + x) Jane had $7 and her sister had $2.
Their parents gave them each equal amount of money
Equation 1) 10x + 2y = 30
Equation 2) 4x + y = 4
Multiply all of equation 2 by 2.
2) 2(4x + y = 4)
2) 8x + 2y = 8
1) 10x + 2y = 30
Subtract equations from each other.
-2x = -22
Divide both sides by -2.
x = -22/-2
x = 11
B) x = 11
~Hope I helped!~
Answer:
90 inches by 110 inches
Step-by-step explanation:
Answer: Zane claims that 85% of his contacts have a phone number with a local area code. He has 225 contacts in his phone. He makes 5 samples by randomly choosing 20 contacts and records whether the number has a local area code or non-local area code in the table. Is Zane's claim supported by the data?
Step-by-step explanation:
