yay47

31.07.2020 • 

Mathematics

A prediction is ___. A) a plan to collect more data
B) something found on a line graph
C) a statement about what could happen
D) something that only applies to the independent variable

What inference could have been made before the space shuttle challenger disaster?

A.) Travel into space is safer using a single rocket
B.) It is impossible to predict when a disaster might strike
C.) Space shuttles are too dangerous to fly in any condition
D.) Many part called 0-rings would be damaged by the cold weather.

What is likely to happen if we can't control our experiment properly?

A.) Our hypothesis will have to be changed.
B.) We will need to do other experiments and collect more data
C.) Our hypothesis will be well-supported by the data we collect
D.) We will have to make more inferences instead of collecting data.

Ответ:

mikey200059

27.04.2020

Mathematics

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x=-6

y=-11

Step-by-step explanation:

x-y=-5

7x+3y=-75

x=5+y plug that in to the second equation

7(5+y)+3y=-75

35+7y+3y=-75

10y=-75-35

10y=-110

y=-11

plug y into first equation

x+11=5

x=5-11

x=-6

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