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DaniilM [7]
3 years ago
10

How many seconds are in a hour

Mathematics
2 answers:
alexandr1967 [171]3 years ago
8 0
60  seconds in a min 60 mins in a hours
60x60
3600
LUCKY_DIMON [66]3 years ago
3 0
There is 60 seconds in a minute and 60 minutes in an hour. 60*60 = 3600 seconds
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Inequalities? the product of 11 and a number is less than 53 i'm confused on how to write it out
nordsb [41]
Ok, so we know that the product of means something added, and we are given that eleven and a number are less than 53. So the equation is 11+X<53.
3 0
3 years ago
A sector of a circle has a central angle of 45 . Find the area of the sector if the radius of the circle is 15 cm.
prohojiy [21]

Answer:

A = 28.125 * pi cm^2

A = 88.357  cm^2


Step-by-step explanation:

Area of a sector is 1/2 r^2 theta  where theta is in radians

convert 45 degrees to radians

theta = 45 * pi/180 = pi/4

A = 1/2 * 15^2 * pi/4

A =1/2 * 225 * pi/4

A = 28.125 * pi cm^2

A = 88.357  cm^2


6 0
3 years ago
Will mark brainliest if correct (surface area question)
I am Lyosha [343]

Answer:

535

Step-by-step explanation:

8 x 7 = 56

15 x 17 = 255 .  255 / 2 = 127.5

15 x 17 = 255 .  255 / 2 = 127.5

15 x 7 = 105

17 x 7 = 119

119 + 105 + 127.5 + 127.5 + 56 = 535

6 0
2 years ago
Rocco is doing an internship with a local carpenter. He is making $11.50 per hour.
SSSSS [86.1K]

Answer:

1. 76.5 days     2. $57.69 per day

Step-by-step explanation:

4 0
3 years ago
Find the difference:
VLD [36.1K]

Answer: The difference cannot be found because the indices of the radicals are not the same.

Step-by-step explanation:

To find the difference you need to subtract the radicals. But it is important ot remember the following: To make the subtraction of radicals, the indices and the radicand must be the same.

In this case you have these radicals:

\sqrt[ {8ab}^{3} ]{{ac}^{2} }- \sqrt[ {14ab}^{3}]{{ac}^{2} }

You can observe that the radicands are the same, but their indices are not the same.

Therefore, since the indices are different you cannot subtract these radicals.

6 0
3 years ago
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