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
pshichka [43]
3 years ago
6

The distance between two piers on a river is 45 miles. It takes a motorboat, moving downriver, 2 hr 15 min to complete the journ

ey. How much time does it take the same boat to go back upstream if the current flows at 2.5 mph?
Mathematics
1 answer:
ahrayia [7]3 years ago
3 0

Answer: 3 hours

Step-by-step explanation: we can make a variable for our answer(x)

Now, we need to find the speed of the boat without the current (y)

we can make this equation: d/t = s: 45/(y + 2.5) = 2 1/4

hence: y = 17.5

now we can substitute in the current's speed: y -2.5

17.5 - 2.5 is 15

now we can solve for x

45/15 = 3

hence, we get 3 hours as our answer

You might be interested in
Help needed ASAP!!!!!!!
alekssr [168]

Answer: 4 is 110 degrees  and 3 and 1 is 70 degrees.

Step-by-step explanation: 4 is equal to 2 so 4 is 110 degrees 4

110 x 2 = 220  360 - 220 = 140/2 = 70 so 3 and 1 = 70 degrees

8 0
3 years ago
Read 2 more answers
Define product. give an example of two whole number factors with a product of 9
Kryger [21]

Answer:

Product is the answer of two numbers that are multiplied together.

3 x 3=9

Step-by-step explanation:

8 0
3 years ago
Hellp me on number 3 pls
Y_Kistochka [10]

Answer:

a. +150, b. -15 yards, c. -75 feet, d. +35 degrees, e. -$24.75

Step-by-step explanation:

You are just evaluating the (-) and (+) symbol based off the term being used. If they are gaining something its a (+) if its a loss in any way shape or form it is a (-)

4 0
3 years ago
Read 2 more answers
Graph the ellipse with equation x squared divided by nine plus y squared divided by sixteen = 1
gladu [14]
X²/9 + y²/16 = 1

The general for mula of an ellipse is:

(x-h)²/a²  + (y-k)²/b² = 1. Since h = k = 0, this ellipse
x²/9 + y²/16 = 1
passes by the center O. (Note that a = 3 and b = 4)

Moreover sin b>a  so the majore axis is (on the y-axis) and a the minor axis (on the x-axis) [Its shape is as a vertical egg].

On a system of perpendicular axis that intercept in O., take on the x-axis 2 points A & B with respective coordinate A(3.0) and B(-3,0)
On the y-axis your report A'(0,+4) and B'(0,-4). So you have the vertex of the ellipse, then it's easy to draw it

6 0
4 years ago
Read 2 more answers
The sum of a number x and 5 equals 14.
Fudgin [204]
Sum means addition so the equation is x+5=14

To get the answer, just do 14-5 and the answer is 9
4 0
3 years ago
Other questions:
  • The axis of symmetry of the graph of y = -(x+4)2 -6 is<br><br> = 6<br> x = -4<br> x = -6<br> x = 4
    7·1 answer
  • Mr Walton ordered 12 pizzas,for the art class celebration one fourth of the pizza had only mushrooms. how many of the pizza has
    5·2 answers
  • Question part points submissions used find an equation of the plane. the plane that passes through the point (−2, 1, 3) and cont
    12·1 answer
  • What is the scale factor from polygon A to polygon B
    10·1 answer
  • How many times larger ? Is 1.815x10^3 and 4.975x10^12??????
    13·2 answers
  • Find the fraction that is equivalent to 21%
    15·2 answers
  • What points are on the graph of g(x)=(1/5)^x
    8·1 answer
  • Of a triangle
    10·1 answer
  • a onion is 0.6 pounds and the cost of that onion is $0.48 what is independent and dependent variables
    10·1 answer
  • A certain map scale in which 1/2 inch on the map represents an actual distance of 10 miles. A distance of x miles is represented
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!