Ask
your own question, for FREE!
Mathematics
20 Online
OpenStudy (littlediva12459):
Year Invention 1807 Steamboat 1825 Photography 1837 Telegraph 1846 Sewing machine 1869 Hydroelectric power 1876 Telephone 1879 Light bulb 1888 Rabies vaccine 1890 Diesel engine 1897 Airplane In Mr. Tarkiainen’s history class, each student chooses two of the topics listed in the chart above for their papers. How many different pairs can Juliana choose?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (littlediva12459):
@VladthePro
OpenStudy (littlediva12459):
A. 45 B. 30 C. 90 D. 10
OpenStudy (littlediva12459):
B.?
OpenStudy (vladthepro):
Not quite. I would say A.
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Bounty:
guys I'm losing all my motivation for school work how can I motivate myself to stop being lazy because even while I'm being on my work it still piles up and
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
Bounty:
guys I'm losing all my motivation for school work how can I motivate myself to stop being lazy because even while I'm being on my work it still piles up and
11 hours ago
2 Replies
1 Medal
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
1 day ago
8 Replies
0 Medals
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
13 hours ago
1 Reply
0 Medals
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
1 day ago
2 Replies
0 Medals
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
2 days ago
5 Replies
0 Medals
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
3 days ago
4 Replies
0 Medals
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
4 days ago
6 Replies
2 Medals