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
gogolik [260]
3 years ago
14

A boat traveled 225 miles each way downstream and back. The trip downstream took 9 hours. The trip back took 15 hours. What is t

he speed of the boat in still water? What is the speed of the current?
Mathematics
1 answer:
Karolina [17]3 years ago
5 0

Answer:

Boat = 20 mph

Current = 5 mph

Step-by-step explanation:

If b is the speed of the boat, and c is the speed of the current, then:

b + c = 225 / 9 = 25

b − c = 225 / 15 = 15

Solve the system of equations with elimination.

2b = 40

b = 20

Plug back into either equation to find the speed of the current.

c = 5

You might be interested in
alex and Juana went on a 50 mile canoe trip with their class. on the first day they traveled 21 miles. what percent of the total
Solnce55 [7]
To work out percentage, divide what they've done (21) by the total distance (50), then multiply it by 100 to get the percentage
(21/50)*100 = 42%
3 0
3 years ago
ITS VERY IMPORTANT PLEASE SOLVE THIS​
kvv77 [185]

Answer:

I'm  \: assuming  \: you \:  meant \:  "group." \:  Draw  \: your \:  3 \:  circles  \: for \:  apples,  \: bananas, \:  and  \: cherries \:  with \:  overlap  \: of  \: all \:  three \:  with  \: each \:  other  \: and  \: make \:  sure \:  there \:  is  \: overlap  \: between  \: each \:  two  \: circles  \: as  \: well.  \:  Note \:  your  \: total = 38 + 42 + 14 = 94 \:  (necessary  \: to \:  calculate  \: the \:  probability) \:  is \:  greater \:  than \:  the  \: 80 \:  people \:  surveyed. \:  Unfortunately,  \: I  \: cannot \:  draw \:  it \:  here \:  for \:  you. \:  There  \: does  \: appear \:  to \:  be \:  a \:  problem \:  with \:  the \:  total \:  number  \: of  \: those \:  who \:  like \:  cherries,  \: as  \: well. \:  It  \: can't \:  be  \: 14  \: with \:  the \:  overlap \:  with  \: other \:  fruit \:  likes, \:  so \:  check \:  the \:  number  \: again. \:   Even  \: if  \: I \:  were  \: to \:  assume \:  the \:  6 \:  that  \: like \:  all  \: 3 \:  fruits \:  included \: , for  \: example, \:  those  \: that \:  like \:  apples \:  and \:  bananas \:  (meaning \:  those \:  that  \: strictly  \: like  \: apples  \: and \:  bananas  \: = 20 - 6 = 14),  \: my  \: total  \: using \:  this  \: approach \:  would  \: be  \: 64,  \: not  \: 80. \: After  \: verifying  \: the  \: question,  \: to \:  find  \: those \:  that \:  simply  \: like \:  one  \: fruit,  \: subtract \:  the  \: numbers \:  that  \: overlap  \: from  \: the  \: total  \: (using  \: your  \: original  \: data,  \: you  \: should  \: get  \: 6  \: people  \: like  \: only  \: apples,  \: and  \: 6 \:  like \:  only  \: bananas).  \: So \:  the  \: probability  \: of  \: those  \: who  \: like  \: either \:  apples \:  or  \: bananas  \: would  \: be  \: 6 + 6 / 94 (or 12 / 94) if  \: the \:  numbers  \: were  \: correct \:  for  \: the  \: cherry \:  fans.

7 0
3 years ago
1. What is the slope of the line represented by<br> tha sanation 3y = 4x - 12?**
BabaBlast [244]

Answer:

4/3

Step-by-step explanation:

3y=4x-12

divide by 3 to isolate y

y=4/3x-4

slope is 4/3

4 0
3 years ago
A number is totally even if all its digits are even. For instance, the numbers 2022 is totally even. How many four-digit totally
dem82 [27]

Answer:

The units digit of our number should be and can be any of 0, 2, 4, 6  (four opportunities).

The tens  digit of our number should be and can be any of 0, 2, 4, 6  (four opportunities).

The hundreds digit of our number should be and can be any of 0, 2, 4, 6, 8  (five opportunities).

The thousands digit of our number should be and can be any of 2, 4, 6  (three opportunities).

So, there are 4*4*5*3 = 16*15 = 240  such 4-digits totally even numbers, satisfying the condition.     ANSWER

Step-by-step explanation:

3 0
3 years ago
Simplify (3x² + 2y² - 5x + y) + (2x² - 2xy - 2y² - 5x + 3y).
prohojiy [21]

The simplified form for (3x² + 2y² - 5x + y) + (2x² - 2xy - 2y² -5x + 3y) is (5x² + 0y² - 10x + 4y - 2xy).

<h3>A quadratic equation is what?</h3>

At least one squared term must be present because a quadratic is a second-degree polynomial equation. It is also known as quadratic equations. The answers to the issue are the values of the x that satisfy the quadratic equation. These solutions are called the roots or zeros of the quadratic equations. The solutions to the given equation are any polynomial's roots. A polynomial equation with a maximum degree of two is known as a quadratic equation, or simply quadratics.

<h3>How is an equation made simpler?</h3>

The equation can be made simpler by adding up all of the coefficients for the specified correspondent term through constructive addition or subtraction of terms, as suggested in the question.

Given, the equation is (3x² + 2y² - 5x + y) + (2x² - 2xy - 2y² -5x + 3y)
Removing brackets and the adding we get,
3x² + 2x² + 2y² - 2y² + (- 5x) + (- 5x) + y + 3y + (- 2xy) = (5x² + 0y² - 10x + 4y - 2xy)

To learn more about quadratic equations, tap on the link below:
brainly.com/question/1214333

#SPJ10

7 0
2 years ago
Other questions:
  • What’s the correct answer
    14·2 answers
  • Someone please help me it's worth 35 points
    7·1 answer
  • A cafeteria used 5 gallon of milk in preparing lunch. How many 1-quart containers of milk did the cafeteria use?​
    11·2 answers
  • How does statement reason work? Follow up question, how do I know which reason fits which statement? Another question, how do I
    14·1 answer
  • Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they
    12·1 answer
  • Start by looking at the first graph on the left and from the left down to the right Which graph is a plot of this set of coordin
    7·1 answer
  • Use the graphing calculator to graph the parent function.
    7·2 answers
  • Sofie makes and sells scarves. Her profit depends on what price she charges for a scarf.
    13·1 answer
  • PLEASE HELP ME ASAP?!?(2questions) 60POINTS+BRAINLIEST
    8·1 answer
  • What is the value for X.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!