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
rusak2 [61]
2 years ago
13

A boat's speed in still water is 4 km/h. The boat cruises from A to B along a river flowing at an average speed of x km/h in the

direction A to B. If the distance AB is 5 km and the boat takes 2 hours more on its return journey, determine x. Hence, find the total time taken for the whole journey.​
Mathematics
1 answer:
nlexa [21]2 years ago
6 0

Answer:

Answer: The speed of the boat in still water or 'b' = 10 km/h. The speed of the current or the river = 4 km/h. Therefore the speed of the boat when going upstream = b – r = 10 – 4 = 6 km/hr.

You might be interested in
BUILDING A horse farm is developing a new indoor arena in a rectangular building. They want the width of the building to be 3y f
MakcuM [25]

Answer:

3y(4y+9)=12y^2+27y......

6 0
2 years ago
You received a bill for $82.53. You prepaid on a budget plan for $110.00/ mth. How much was
Yakvenalex [24]

<em>Answer:192.53</em>

<em>Step-by-step explanation:</em>

<em>        You just Add:</em>

$82.53+$110.00=192.53

Your answer is: 192.53

8 0
3 years ago
Can someone please help me on this question <br> I will give brainliest
xz_007 [3.2K]

Answer:

A) 3 in

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Geometry</u>

  • Surface Area of a Sphere: SA = 4πr²
  • Diameter: d = 2r

Step-by-step explanation:

<u>Step 1: Define</u>

SA = 23 in²

<u>Step 2: Find </u><em><u>r</u></em>

  1. Substitute [SAS]:                    23 in² = 4πr²
  2. Isolate <em>r </em>term:                         23 in²/(4π) = r²
  3. Isolate <em>r</em>:                                  √[23 in²/(4π)] = r
  4. Rewrite:                                   r = √[23 in²/(4π)]
  5. Evaluate:                                 r = 1.35288 in

<u>Step 3: Find </u><em><u>d</u></em>

  1. Substitute [D]:                    d = 2(1.35288 in)
  2. Multiply:                              d = 2.70576 in
  3. Round:                                d ≈ 3 in
4 0
3 years ago
The distance between the two points (4,1) and (9,1) is​
Rzqust [24]

Answer:

5 units. Since they have the same y coordinate the x coordinate determines the distance from each other. In the case 9-4=5.

6 0
3 years ago
Please answer the WHOLE question and explain!
exis [7]

The total weight of candies is unknown. Let x = the total weight of candies.

"One student ate 3/20 of all candies and another 1.2 lb":

The first student ate (3/20)x plus 1.2 lb which is 0.15x + 1.2.

"The second student ate 3/5 of the candies and the remaining 0.3 lb."

The second student ate (3/5)x and 0.3 lb which is 0.6x + 0.3.

Altogether the 2 students ate 0.15x + 1.2 + 0.6x + 0.3.

That was all the amount of candies, so that sum equals x.

0.15x + 1.2 + 0.6x + 0.3 = x

Now we solve the equation for x to find what the total amount of candies was.

0.75x + 1.5 = x

-0.25x = -1.5

x = 6

The total amount of candies was 6 lb.

The first student ate 0.15x + 1.2 = 0.15(6) + 1.2 = 0.9 + 1.2 = 2.1, or 2.1 lb of candies.

The second student ate 0.6x + 0.3 = 0.6(6) + 0.3 = 3.6 + 0.3 = 3.9, or 3.9 lb of candies.

Answer: The first student ate 2.1 lb of candies, and the second student ate 3.9 lb of candies.

7 0
3 years ago
Other questions:
  • What is 7/8 times 3/4
    9·2 answers
  • Find the area of the figure to the nearest tenth.
    15·1 answer
  • In a statistics class of 13 sophomores, 12 juniors, and 8 seniors, 5 of whom are male sophomores, 6 of whom are female juniors,
    15·1 answer
  • What is the average of 80 and 31?
    13·1 answer
  • I need help with Algebra 2​
    12·1 answer
  • Arrange the absolute value expressions in increasing order of their values. |-90| |-43| |47| |-55| |-88| |38| |-18|
    5·1 answer
  • 14. Max wants to buy some shorts that are
    14·1 answer
  • 60 feet per second to kilometer per hour
    10·2 answers
  • Which ratio is greater? 4:3 or 7:9. (Show necessary steps and calculations for your answer)
    10·2 answers
  • Jamie is ordering buses for the school trip. There are 218 students at Park Avenue who are going on the trip. Each bus can hold
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!