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Kryger [21]
2 years ago
15

3. Aşağıda verilen çıkarma işleminde bazı rakamların yerine semboller kullanılmıştır.

Mathematics
1 answer:
babymother [125]2 years ago
5 0

Answer:

thr answers are A and D of the question

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Point W is located at (-10, 22). If point Wis reflected across the y-axis, what an
Marta_Voda [28]

Answer:

(-10,-22)

Step-by-step explanation:

It is the (x, y)->(x, -y) rule for reflection on yaxis

4 0
3 years ago
The velocity of the current in a river is C = 0.6i + 0.8j km/hr. A boat moves relative to the water with velocity v=7i km/hr. a.
AnnyKZ [126]

Answer:

  a. 7.64 km/h

  b. 6.0°

  c. see below

Step-by-step explanation:

a) The total velocity of the boat is ...

  7i +(0.6i +0.8j) = 7.6i +0.8j

The magnitude of this velocity is the speed of the boat, relative to land. That is given by the Pythagorean theorem.

  |7.6i +0.8j| = √(7.6² +0.8²) = √58.4 ≈ 7.642 . . . . km/h

__

b) The angle of the total velocity with respect to the "i" direction (the direction of vector v) is ...

  α = arctan(0.8/7.6) ≈ 6.009°

__

c) The boat is headed in a direction 6° different from its velocity relative to the water. That may need to be accounted for if the boat is traveling any significant distance.

5 0
3 years ago
How do you convert units within a measurement system
Crazy boy [7]
You have to know how the value of one unit corresponds to the value of the other unit. For example you have to know that there are 100 cm in 1 m or 1000 m in 1 km. It's easy in metric measurement system because it's all about multiplying/dividing by 10 or its multiplications. But in American/English system you just have to learn the values.

For example:

1 km = 1000 m = 10000 dm = 100000 cm = 1000000 mm

But:

1 mile = 1760 yards = 5280 feet = 63360 inches
5 0
3 years ago
Choose the best answers to complete the statements below.
morpeh [17]

<u>Answer:</u>

245 days per year ; 1715 hours per year

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

Every emplyoee  works 5 days per week , 49 weeks per year. So,

Every employee works,

5 \times 49 days  = 245 days per year .

Every employee works  7 hours per day,

so, every employee works  7 \times 245 hours

                                           =  1715 hours per year .

                                     

5 0
3 years ago
Elena runs for 28 seconds and finishes at 250 seconds what is her velocity please explain
ExtremeBDS [4]

Answer:

The velocity is 8.93 meters/second.

Step-by-step explanation:

It is given that  Elena runs for 28 seconds and finishes at 250 meters.

Here the displacement is 250 meters and the time is 28 seconds.

We know that  V=\dfrac{\text{Displacement}}{\text{Time}}

Substitute displacement = 250 and time = 28 in above formula.

V=\dfrac{250}{28}

V\approx 8.93 meters/second

Hence, the velocity is 8.93 meters/second.

5 0
3 years ago
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