標題:
math (show steps), thank you! {quick!}
發問:
1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a?2. Jenny's father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now?3. The amount donated by Mr Lee each month is... 顯示更多 1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a? 2. Jenny's father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now? 3. The amount donated by Mr Lee each month is $1/4(I - 8000), where I stands for his monthly income. If Mr Lee donated $500 in July, find his income in that month.
最佳解答:
1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a? a+1+a+2=33 2a+3=33 a=15 2. Jenny's father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now? let Jenny now is x years old Five years later Jenny now is x+5 years old, his father is 40 years old At that time, Jenny father will be 4 times as old as Jenny then 4(x+5)=40 x=5 Jenny now is 5 years old 3. The amount donated by Mr Lee each month is $1/4(I - 8000), where I stands for his monthly income. If Mr Lee donated $500 in July, find his income in that month. 1/4(I - 8000)=500 I - 8000=2000 I=10000 his income in that month is 10000
其他解答:
math (show steps), thank you! {quick!}
發問:
1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a?2. Jenny's father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now?3. The amount donated by Mr Lee each month is... 顯示更多 1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a? 2. Jenny's father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now? 3. The amount donated by Mr Lee each month is $1/4(I - 8000), where I stands for his monthly income. If Mr Lee donated $500 in July, find his income in that month.
最佳解答:
1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a? a+1+a+2=33 2a+3=33 a=15 2. Jenny's father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now? let Jenny now is x years old Five years later Jenny now is x+5 years old, his father is 40 years old At that time, Jenny father will be 4 times as old as Jenny then 4(x+5)=40 x=5 Jenny now is 5 years old 3. The amount donated by Mr Lee each month is $1/4(I - 8000), where I stands for his monthly income. If Mr Lee donated $500 in July, find his income in that month. 1/4(I - 8000)=500 I - 8000=2000 I=10000 his income in that month is 10000
其他解答:
此文章來自奇摩知識+如有不便請留言告知
1.)(a+1)+(a+2)=33 a+1+a+2)=33 2a+3=33 2a=30 a=15 唔知你no2.ask what....我諗ans is 5 唔知你no3.ask what.....sor~|||||1. the cost of a book is $(a+1) and that of a pen is $(a+2). If the total cost of the book and the pen is $33, what is the value of a? (a+1)+(a+2)=33 2a+3=33 2a=30 a=15 2. Jenny’s father is now 35 years old. Five years later, he will be 4 times as old as Jenny then. how old is Jenny now? let Jenny is x years old now 35+5=4(x+5) x+5=10 x=5 so Jenny is 5 years old now. 3. The amount donated by Mr Lee each month is $1/4(I - 8000), where I stands for his monthly income. If Mr Lee donated $500 in July, find his income in that month. 1/4(I-8000)=500 I-8000=2000 I=10000 so his income of this month is $10,000|||||1. ( a+1 ) + ( a + 2 ) = 33 2a + 3 = 33 a = 15 2. Let Jenny x year old now 4 ( x+ 5 )= 35 + 5 4x + 20 = 40 x= 5 Jenny is 5 years old 3. 1/4 I - 2000 = 500 I = 2500 * 4 I =10000
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