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
valentina_108 [34]
3 years ago
13

in one day, annie traveled 5 times the sum if the number of hours brian traveled and 2. Together they traveled 20 hours. Find th

e number of hours eacg person traveled.
Mathematics
1 answer:
Alex17521 [72]3 years ago
8 0
\bf \textit{Annie travelled 5 times the hours of Brian}\\
\textit{the hours of both sum up to \underline{20}}
\\\\\\
\begin{cases}
b=\textit{hours Brian travelled}\\
a=\textit{hours Annie travelled}\\
----------\\
\boxed{a}=5b\\
a+b=\underline{20}
\end{cases}
\\\\\\
\boxed{5b}+b=20\implies 6b=20\implies b=\cfrac{20}{5}\implies b=4

how many hours Annie travelled?  Well, a = 5b.
You might be interested in
HEEEEEELLLLLLLPPPPP !!!!!!!!!​
ludmilkaskok [199]

Calculate the length of each path using the law of cosines:

AB = √(8^2 + 8^2 - 2*8*8*cos(36)

AB = 4.94 ft.

XY = √(8^2 + 8^2 - 2*8*8*cos(79)

XY = 10.18 ft.

ZY = √(8^2 + 8^2 - 2*8*8*cos(65)

ZY = 8.60 ft.

XY is longer than ZY and ZY is longer than AB

The first choice is correct.

5 0
4 years ago
Read 2 more answers
Steve cut a circular piece of mirror glass with the diameter of 20 cm in order to make a frame for it he needed to calculate the
Marianna [84]

Answer:

The circumference is 62.8 cm.

Step-by-step explanation:

To find the circumference, use 3.14 * 20 = 62.8

7 0
3 years ago
Find the lateral area of the cylinder.<br><br>Give your answer in the terms of pi.
Wewaii [24]
Hi there! 

The formula for the lateral area of a cylinder is LA = 2 x pi x r x h. (two times pi times radius times height) Using this formula, we can plug in the values and solve for the lateral area.

Plugging in the values: LA = 2 x pi x 7 x 9
Simplifying: LA = 2pi x 63
LA = 126pi yd^2

ANSWER:
The 4th option - 126pi yd^2

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
6 0
3 years ago
Sumalee won 40 super bouncy balls playing horseshoes at her schools game last night. Later, she gave two to each of her friends.
Lina20 [59]
Before jumping into doing this problem, it is important to look at all the information's that have been made available in the question. Based on those given conditions the answer to the problem can be easily deduced.
Let us assume the number of friends Sumalee has = x
Then
2x + 8 = 40
2x = 40 -8
2x = 32
x = 32/2
x = 16
So Sumalee has 16 friends. There are numerous ways to get to the answer that is required to be found. This is the easiest and the shortest method. Hope i helped you.
6 0
3 years ago
Read 2 more answers
Solve the following equations for x<br> x(14-x) = 33
Katarina [22]

ANSWER :

14x-x^2 = 33

Step-by-step explanation:

x(14-x) = 33

14x-(x)^2 = 33

7 0
3 years ago
Other questions:
  • What is the valye 62 ten and how do you figure
    14·2 answers
  • What is 310,763,136 in word form?
    7·2 answers
  • Mark has a board that is 12 feet long. He cuts the board into 8 peices that are the same length. How long is each peice
    15·1 answer
  • A builder buys 24.5 acres of land to develop a new community of homes and parks.
    5·1 answer
  • The world population in 2013 was about 7.125 billion. In 2003, it was about 6.357 billion. Which number represents the increase
    15·2 answers
  • Can I get some help :/
    7·1 answer
  • Solve for x. please help asap we have a test on these tomorrow and i have no idea what’s going on.
    14·2 answers
  • HELP ASAP 20 POINTS BRAINLIEST
    11·1 answer
  • In a recent election Corrine Brown received 13,852 more votes than Bill Randall. If the total number of votes was 119,056​, find
    11·1 answer
  • What is the period of the function F(x) = -4 sec(1/2x)?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!