Add the two expressions. 8.9x−5 and −6.8x+8
2 answers:
You might be interested in
Answer:
The expression to determine the total cost in dollars is .
Step-by-step explanation:
Given:
Service charge to make a photo book = $20
Cost per extra page = $0.75
Cost to ship the complete photo book = $5
We need to write expression to determine the total cost in dollars.
Solution:
Let the number of extra pages be denoted by 'x'.
Also Let the Total cost be denoted by 'y'.
Now we can say that;
Total cost will be equal to sum of Service charge to make a photo book and Cost per extra page multiplied by number of extra pages and Cost to ship the complete photo book.
framing in equation form we get;
Hence the expression to determine the total cost in dollars is .
Answer:
Step-by-step explanation:
Given that:-
The speed of the orion= 20,000 miles per hour
Time = 1 hour ( From source )
Thus,
Distance = Speed * Time = 20,000*1 miles = 20,000 miles
Thus, in 1 hour, the orion can travel 20,000 miles
Also,
93,000,000 miles = 1 astronomical unit
1 mile = 1/93,000,000 astronomical unit
20,000 miles = (1/93,000,000)*20,000 astronomical unit
<u>The orion can travel AU in one hour.</u>
Answer:
Step-by-step explanation:
Xét tam giác DAB có: P là trung điểm AD, M là trung điểm AB
=> MP là đường trung bình của tam giác DAB => MP//BD và MP=BD (1)
Xét tam giác DBC có: N là trung điểm DC, Q là trung điểm BC
=> QN là đường trung bình của tam giác DBC => QN//BD và QN=BD (2)
Từ (1) và (2) => vecto MP song song cùng chiều với vecto QN
và độ dài MP = độ dài QN = BD
=> vecto MP = vecto QN
Tương tự xét các tam giác DAC và tam giác ABC => vecto MQ = vecto PN