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Tresset [83]
3 years ago
15

A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, how much pressure does the block exert on the tableto

p?
Mathematics
2 answers:
VashaNatasha [74]3 years ago
4 0

Answer:

Step-by-step explanation:

122.5 pa

Delicious77 [7]3 years ago
3 0
Pressure<span> is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. We calculate the pressure applied to the system above by the expression:

P = F / A

where F = mg

P = mg / A
P = (7.5 x 9.8) / 0.6
P = 122.5 Pa</span>
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Which decimal number is equal to 2/3? <br><br><br> 0.6<br><br> 0.66<br><br> 0.6.......<br><br> 0.67
Roman55 [17]
2/3 = .66
Hope this helps!!
4 0
3 years ago
Read 2 more answers
When Ximena commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 38 minutes and a
irga5000 [103]

Answer:

The interval that represents the middle 68% of her commute times is between 33.5 and 42.5 minutes.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 38 minutes, standard deviation of 4.5 minutes.

Determine the interval that represents the middle 68% of her commute times.

Within 1 standard deviation of the mean. So

38 - 4.5 = 33.5 minutes

38 + 4.5 = 42.5 minutes.

The interval that represents the middle 68% of her commute times is between 33.5 and 42.5 minutes.

6 0
2 years ago
Jamie wants to purchase some books and plans for the library period the plants each cost $14 and each book cost $9.
neonofarm [45]

Answer:

38 ≥ 14p + 9b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A rocket is launched from the top of a 99-foot cliff with an initial velocity of 122 ft/s.
Harman [31]
Remember that c is the initial height. Since we the rocket is in a 99-foot cliff, c=99. Also, we know that the velocity of the rocket is 122 ft/s; therefore v=122
Lets replace the values into the the vertical motion formula to get:
0=-16 t^{2} +122t+99
Notice that the rocket hits the ground at the bottom of the cliff, which means that the final height is 99-foot bellow its original position; therefore, our final height will be h=-99
Lets replace this into our equation to get:
-99=-16 t^{2} +122t+99
-16 t^{2} +122+198=0

Now we can apply the quadratic formula t= \frac{-b+or- \sqrt{ b^{2} -4ac} }{2a} where a=-16, b=122, and c=198
t= \frac{-122+or- \sqrt{ 122^{2}-(4)(-16)(198) } }{(2)(-16)}
t= \frac{-122+ \sqrt{27556} }{-32} or t= \frac{-122- \sqrt{27556} }{-32}
t= \frac{-122+166}{-32} or t= \frac{-122-166}{-32}
t= \frac{-11}{8} or t=9

Since the time can't be negative, we can conclude that the rocket hits the ground after 9 seconds.
5 0
3 years ago
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PLS HELP ASAP<br> is this aa,sas,ss, or neither
bagirrra123 [75]

Answer:

SAS

Step-by-step explanation:

the right angles are congruent

the pairs of sides are proportional

7 0
3 years ago
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