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Vadim26 [7]
3 years ago
7

Use a system of equations to solve a problem involving distance, speed, and time.

Mathematics
1 answer:
Yuki888 [10]3 years ago
7 0

Answer:

Speed of boat in still water is 26km/hr

Step-by-step explanation:

Let the speed of boat in still water be x and speed of stream by y.

Speed at which it went upstream would be (x-y) and the speed at which it went downstream would be (x+y). According to question x+y=24 and x-y=28. x=26 and y=-2.

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The life in hours of a battery is known to be approximately normally distributed, with standard deviation σ = 1.25 hours. A rand
Papessa [141]

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  

6 0
3 years ago
Solve 2(x + 1) = 2x + 2.<br> All real numbers<br> No solution<br>0 <br>1
nadya68 [22]

Answer:

2(x+1)= 2x+2.

Step-by-step explanation:

Because, there is a on infront of x so you do 2x1=2 so 2x+2 because 2x1=2

8 0
3 years ago
Read 2 more answers
Pls answer<br><br> Y’all are awesome thx
Vilka [71]

Answer: 12a.) slope is 125, y-intercept is 50 (started at 50 ft)

12b.) f(3) = 425 feet

12c.) 3.6 hours

Step-by-step explanation:

12a.) The slope equation is y = mx+b, where m is the slope, and b is the y intercept.

12b.) to find f(3) you could either plug it into the equation given (125x+50) or pretend there is a vertical line at 3 on the x axis, and where it crosses the line given would be the answer.

12c.) He is climbing a 500 ft cliff, and according to the graph, it takes him 3.6 hours to do it. Another way to find this answer would be to find f(3.6), which is indeed 500 ft.

Hope this helps!

3 0
3 years ago
Can anybody please help me on this
Digiron [165]

Answer:

The length of AA' = √29 = 5.39

Step-by-step explanation:

* Lets revise how to find the length of a line joining between

 any two points in the coordinates system

- If point A is (x1 , y1) and point B is (x2 , y2)

- The length of AB segment √[(x2 - x1)² + (y2 - y1)²]

* Lets use this rule to solve the problem

∵ Point A is (0 , 0)

∵ Point A' = (5 , 2)

∵ (x2 - x1)² = (5 - 0)² = 5² = 25

∵ (y2 - y1)² = (2 - 0)² = 2² = 4

∴ The length of AA' = √(25 + 4) = √29 = 5.39

6 0
3 years ago
Is 8.27 rational or irrational?
BlackZzzverrR [31]

Answer:

Rational

Step-by-step explanation:

A terminating decimal is a rational number.

A repeating decimal is a irrational number.

Since 8.27 terminates, it is rational.

3 0
3 years ago
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