Answer:
3
Explanation:
3+9=12
12÷3=4
4-2=2
2×4=8
The starting number was 3 which Alice thought of as a number, added 9, divided by 3, subtracted 2, and multiplied by 4 to give an answer of 8.
What is the number system?A number system is defined as a way to represent numbers on the number line using a set of symbols and approaches. These symbols, which are known as digits, are numbered 0 through 9.
Let the starting number would be x
As per the given question,
She did was 4[(x+9)/3 - 2] = 8 which is an equation that we can solve for x,
⇒ 4[(x+9)/3 - 2] = 8
⇒ [(x+9)/3 - 2] = 8/4
⇒ (x+9)/3 - 2 = 2
⇒ (x+9)/3 = 2 + 2
⇒ (x+9)/3 = 4
⇒ (x+9) = 12
⇒ x = 12 - 9
⇒ x = 3
Therefore, the starting number was 3.
Learn more about the number system here:
https://brainly.com/question/21751836
#SPJ2
What type of energy transfers could occur in Biosphere 2?
Answer:
Biosphere 2 is a 3.15-acre (12,700 m2) structure originally built to be an artificial, materially-closed ecological system in Oracle, Arizona (USA) by Space Biosphere Ventures, a joint venture whose principal officers were John P. Allen, inventor and Executive Director, and Margret Augustine, CEO.
Explanation:
What are primary reasons for being trained on cleaning, storage, and maintenance of tools and equipment?
O Work safer
O Save money on tools
O Work more efficiently
O All of the above
e
17. You can place frame-engaging lift adapters anywhere under the vehicle's body, frame, or suspension.
A) O True
B) False
<< Previous Page
Next Page >>
You can place frame-engaging lift adapters anywhere under the vehicle's body, frame, or suspension is a true statement.
What are frame engaging lift adapters?Frame engaging adapters are known to be a kind of tools that are often used for lifting vehicles for examples pickup trucks that are known to have frames.
Note that Frame form of engaging lift adapters is one that a person can put anywhere that is under the vehicle's underbody as there is no need to consult the vehicle manufacturer's manual.
Therefore, based on the above, one can say that a person can place frame-engaging lift adapters anywhere under the vehicle's body, frame, or suspension as a true statement.
Learn more about lift from
https://brainly.com/question/28367104
#SPJ1
A good scientific question
is specifically focused and tries to answer something unknown.
is generally focused and tries to answer a gap in knowledge.
always has a gap in knowledge.
always leads to a hypothesis.
Answer:
is generally focused and tries to answer a gap in knowledge
Explanation:
just took test review
A motor and pulley system is used to lift a 30 kg mass 20 m vertically in no more than 10 s. If the efficiency of the motor is 0.98, the minimum input power is ____ W.
The power input is obtained as 6000 W
What is the power input?
We know that the power is defined as the rate of doing work. The rate has to do with the timed rate thus if we divide the work done by the time taken to do the work, that is how we obtain the the power that is expended.
Now;
We have the work done as = 30 kg * 9.8 m/s^2 * 20 m = 5880 J
Energy expended = 5880 J/ 10 s = 588 W
We know that the efficiency is obtained from;
E = Power output/ Power input * 100/1
0.98 = 588 W/ Power input * 100/1
0.98 = 58800/Power input
Power input = 58800/0.98
Power input =6000 W
Learn more about power input:https://brainly.com/question/1091798
#SPJ1
is it necessary to check on the condition of your tools.
Answer:
yes because then you know wether or not to start prparing for your next tools that you need to get