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4 years ago

Wich tool is used to measure the lengths of segments when preforming a formal geometric construction

Mathematics

1 answer:

Dmitrij [34]4 years ago

5 0

A ruler as that is the only option that can measure segments

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A bag has 5 blue marbles, 4 red marbles, and 3 green marbles. A student randomly picks a marble from the bag and then rolls a nu

mixer [17]

Answer:

A. 5/72

Step-by-step explanation:

5 + 4 + 3 = 12 marbles

5/12 - the probability that the student picks a blue marble.

1/6 - the probability that 4 is on the cube

The probability that the student picks a blue marble from the bag, and then rolls a 4

5/12 * 1/6 = 5/72

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3 years ago

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4/7 times a number minus 8.5 is no more than 11.5

mote1985 [20]

Good luck finding this answer 211

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3 years ago

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A chain lying on the ground is 10 m long and its mass is 70 kg. How much work (in J) is required to raise one end of the chain t

DerKrebs [107]

Answer:

$W= 34.3 \frac{kg}{s^2} (4^2-0^2)m^2 =548.8 \frac{kg m^2}{s^2} =548.8 J$

Step-by-step explanation:

Data Given: m = 70 kg , g = 9.8 ms^-2, h =10m.

For this case we can use the following formula:

$W = \int_{x_i}^{x_f} F(x) dx$

For this case we need to find an expression for the force in terms of the distance. And since on this case the total distance is 10 m long we can write the expression like this:

$F(x) = \frac{ma}{10m}= \frac{mg}{10m} x$

The only acceleration on this case is the gravity and if we replace the values given we got:

$\frac{70 kg *9.8 m/s^2}{10m} x=68.6 x\frac{kg}{s^2}$

Now we can find the required work with the following integral:

$W= 68.6 \frac{kg}{s^2} \int_{0}^4 x dx$

$W= 34.3 \frac{kg}{s^2} x^2 \Big|_0^4$

$W= 34.3 \frac{kg}{s^2} (4^2-0^2)m^2 =548.8 \frac{kg m^2}{s^2} =548.8 J$

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4 years ago

I NEED HELP ASAP 14 and 15 have the same choices WILL MARK BRAINLIST

Elodia [21]

Answer:

14. adjecent

15. vertical

Step-by-step explanation:

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3 years ago

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When measuring forecast error, which forecasting error expresses the forecast error as a percentage from the mean?

oee [108]

Mean Absolute Percent Error, MAPE

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3 years ago