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3 years ago

The free fall acceleration of an object under the influence of earths gravity 9.81. What is it’s value in I’m/min^2

1 answer:

4 0

Answer:It means that the speed of a free falling object (an object only under the influence of gravitational force) increase at the rate of 9.8m/sec per second.

So the object will be traveling at 9.8m/sec just after 1st second is passed.

It would be traveling at 9.8m/s +9.8m/s =19.6m/s just after 2nd second.

It would be traveling at 19.6m/s + 9.8/s=29.4 m/s just after 3rd second,and so on .

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Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

weqwewe [10]

Answer:

8(15-m)

Step-by-step explanation:

By looking at the options, we can understand that the right one is 8(15-m), since we need to multiply the time by the number of question.

Also, we can check that result by arranging an equations usint the total time.

55 = 3m - 8(15-m)

55 = 3m - 120 + 8m

55 = 11m - 120

55 + 120 = 11m

175 = 11m

m = 175/11 = 15.91

55 = 3*15.91 - 8(15-15.91) = 47.73 - 120 + 127.28 = 55.01 ≈ 55

6 0

3 years ago

Which equation best describes the relationship between Marla's total pay , p and the number of hours she works , h?

goldfiish [28.3K]

Answer:

Step-by-step explanation:

7 0

2 years ago

In a triangle, one of the angle measures 70°

Tanya [424]

Answer:

the two angles are 55° each

Step-by-step explanation:

Let the two equal angles be y each

Therefore,

70° + y + y = 180°

Collect like terms

2y = 180 — 70

2y = 110

Divide both side by the coefficient of y i.e 2

y = 110/2

y = 55°

Therefore, the two angles are 55° each

4 0

3 years ago

Which of the following values is the solution of x/32=8?<br> a 24<br> b 40<br> c 256<br> d 4

Oduvanchick [21]

Answer:

c) 256

Step-by-step explanation:

https://www.tiger-algebra.com/drill/x/32=8/ This link shows you how it’s done, it’s not some random link, i used the website all the time

4 0

3 years ago

The security system in a house has two units that set off an alarm when motion is detected. Neither one is entirely reliable, bu

Mariulka [41]

Answer:

Probability that detector B goes off is '0.615'

Step-by-step explanation:

Given that:

1) Probability that detector A goes off and detector B does not go off is 0.25.

2)Probability that detector A does not go off is 0.35.

3)Probability that detector A goes off is (1-0.35)=0.65

Assuming that

Probability that detector B goes off is 'p' Hence the probability that detector B does not goes off is (1-p)

Thus the probability that detector A goes off and detector B does not go off is product of the individual probabilities

$P(E)=0.65\times (1-p)\\\\0.65\times (1-p)=0.25\\\\0.65-0.65p=0.25\\\\0.65-0.25=0.65p\\\\\therefore p=\frac{0.40}{0.65}=0.615$

Probability that detector B goes off is '0.615'

5 0

3 years ago