1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
viva [34]
2 years ago
13

B. Solve

Social Studies
1 answer:
Anton [14]2 years ago
7 0

Answer:

45 km/hr

Explanation:

total distance = 90

Increased speed = x+15

90/x - 90/x+15=1/2

90(1/x - 1/x+15)=1/2

90(x+15-x/x^2+15x)=1/2

equation is:

x^2+15x-2700=0

x^2+60x-45x-2700=0

x(x+60)-45(x+60)=0

(x+60)(x-45)=0

x= -60, x=45

reject the negative value = -60

usual speed=45 km/ hr

You might be interested in
Joe is in charge of an FBI field office. Joe's office has been monitoring an organized crime family in his jurisdiction. The cri
iragen [17]

Answer:

FBI

Explanation:

3 0
3 years ago
How does the government corporations differ from other corporations in the United States
zhuklara [117]
Government corporations are intended to carry out business activities for the betterment of the citizens of the nations. These cooperations are set up by the congress of men and unlike all other public businesses they have board of directors and a general manager.
7 0
3 years ago
Really need help with this social studies question
joja [24]

Answer: nigeria

Explanation:

5 0
3 years ago
Read 2 more answers
Help me plz answer the question!<br><br> Look at pic!
Shalnov [3]
WW2 I believe/think. That would be my answer.
4 0
3 years ago
Read 2 more answers
An example of a behavior by a researcher that would be considered unethical is _____
oksano4ka [1.4K]
One of the example would be C<span>hanging the data to support the hypothesis.
Changing data to support the hypothesis woulld definitely make the studies turn into wrong direction every course of the way.
If the study is being done for mass consumption (such as development of new drugs) , this type of behavior could could cause a lot of health risks to many people (even death)</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Jamal is a new york city firefighter/paraamedic. people who know him say
    12·1 answer
  • Question 2 of 20
    8·2 answers
  • Oscar Lewis was the first to suggest that the poor develop a way of life with fundamentally different values and goals because t
    6·1 answer
  • What additional evidence does the experiment with the "tip covered by cap" group tell you?
    11·1 answer
  • Describe opportunities for someone wishing to be an active citizen at the local level.
    8·2 answers
  • Select the correct answer.
    9·2 answers
  • Maria has a six-year-old son who attends school near their house. She has terrible thoughts that he will be abducted while at sc
    5·1 answer
  • Who is similar to Giacomo Puccini now in modern-days? And what are their similarities?​
    5·1 answer
  • What are external forces that influence our actions and lives?
    12·1 answer
  • Because effectively dealing with hr issues are at the heart of being a good manager, many employers now delegate many traditiona
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!