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
Westkost [7]
2 years ago
6

Two groups went hiking, leaving at the same time and arriving back at the same time. While one group moved away at the speed 6 m

ph and then moved back at the speed 4 mph, the other group moved all the way with the same speed. What was the speed of this second group, if both groups covered the same total distance, 24 miles?
Mathematics
1 answer:
Evgesh-ka [11]2 years ago
5 0

Step-by-step explanation:

d = the distance in one direction.

the time t1 it took group 1 was

t1 = d/6 + d/4

and t2 for group 2 moving with speed2 all the way

t2 = (d+d)/speed2

we know

2d = 24 miles

d = 12 miles

t1 = t2

so,

12/6 + 12/4 = 24/speed2

2 + 3 = 24/speed2

5 = 24/ speed2

5×speed2 = 24

speed2 = 24/5 = 4.8 mph

the second group moved with 4.8 mph.

You might be interested in
What is the formula to find the area of a triangle
lorasvet [3.4K]

Answer:

A= 1/2bh

Step-by-step explanation:

(how its supposed to be said: Area= one half base times height)

:)

3 0
3 years ago
Read 2 more answers
What is the degree of the function f(x)=x⁴-5x+8+x²?​
DENIUS [597]

First put it in decreasing power according to x.

x^4-5x+8+x^2

=x^4+x^2-5x+8

Now this question is asking what is the highest degree of x you see in this function.

4 of course.

Therefore the answer to his question is degree of 4.

Done!

7 0
3 years ago
Which equation(s) have x = –3 as the solution? log3(2x + 15) = 2 log5(8x + 9) = 2 log4(–20x + 4) = 3 logx81 = 4
baherus [9]

Answer:

log_3(2x+15)=2  and log_4(-20x+4)=3

Step-by-step explanation:

Plug it in and see!

log_3(2x+15)=2\\log_3(2(-3)+15)=2\\log_3(-6+15)=2\\log_3(9)=2\\\text{ This is a true equation because } 3^2=9\\\\\\log_5(8(-3)+9)=2\\log_5(-24+9)=2\\log_5(-15)=2\\\\\text{ Not true because you cannot do log of a negative number }\\\\log_4(-20(-3)+4)=3\\log_4(64)=3\\\text{ this is true because } 4^3=64\\\\\\log_x (81)=4\\log_{-3}(81)=4\\\text{ the base cannot be negative }\\\\\\\\\text{ There is only two options here} \\\\log_3(2x+15)=2 \text{ and } log_4(-20x+4)=3

6 0
3 years ago
Read 2 more answers
OD) A tree is 30 feet tall and casts a shadow that is 25 feet long. At the same time, a man
RUDIKE [14]

Answer:

6ft

Step-by-step explanation:

7 0
3 years ago
James deposits $400 in a bank account for three years. He will earn 2.5% compound interest per annum. How much will be in his ba
IceJOKER [234]

Answer:

i think its $1000 after 3 year

4 0
3 years ago
Other questions:
  • What is 45% of $360
    5·2 answers
  • Differentiation. questions 1 and 2
    9·1 answer
  • I need help on #11 :)
    12·1 answer
  • A retailer purchased a set of four plates at a cost of $45.00 and plans to sell them for $75.00. What is the percent of markup b
    9·2 answers
  • Which of the following inequalities are correct?
    6·1 answer
  • Help me solve these 4 plssss ASAP
    5·1 answer
  • Try to solve this if you can​
    5·2 answers
  • HELP I WILL GIVE BRAINLIEST<br> The first picture with a bunch of numbers is the data set
    6·1 answer
  • How is this excerpt important to the poem as a whole?
    13·1 answer
  • How can I solve this linear equation x+y=7 3x+y=15​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!