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3 years ago

Could I please have some workings out with the answer

Mathematics

1 answer:

rusak2 [61]3 years ago

4 0

Assuming that the units of speed are also in minutes, for instance km/min or m/minute. Then you would not need to convert time into another unit. As for multiplying the bases of 10, remember that 10 = 10^1. So it would be 10^8+1 = 10^9. So the result would be 24 • 10^9 but in proper scientific notation it would be 2.4 • 10^10.

Yet, I believe you are working with the speed of light and thus you would need to convert 8 minutes into seconds which would be 8 • 60 = 480 seconds. Then do the following operation:

480 = 4.80 X 10^2

(4.80 X 10^2 seconds)(3.00 X 10^8 metres/second)

Simply multiply the whole numbers, and the bases of 10, and put in proper scientific notation.

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What is the difference in the area of a circle with diameter 4m and a circle with diameter 6m?

nordsb [41]

Answer:

The difference between the area of the two circles is 15.7m

Step-by-step explanation:

I swear these be helping me with the CIEs coming up in May xD

Okay so the formula for a circle is $\pi r^2$

The diameter is the double of the radius so

Cirlce A has a diameter of 4m so a radius of 2m

$\pi 2^{2}$

$\pi4$

$12.57m$

Circle B has a diameter of 6m so a radius of 3m

$\pi 3^2$

$\pi 9$

$28.27m$

To find the difference subtract 12.57 from 28.27

$28.27-12.57\\=15.7$

The difference between the area of the two circles is 15.7m

Hope this helps, if you still need help just comment :)

5 0

3 years ago

The main tank at an aquarium is a cylinder with a diameter of 203 ft and a height of 25 ft. Find the volume of the tank to the n

emmasim [6.3K]

In order to find the volume of the tank, you just need to use this formula :

V = π r^2 h

r = 101.5 ft (half the diameter)
h = 25 ft

V = π (101.5)^2 x 25

= 809462.5 ft^3

hope this helps

5 0

4 years ago

My average grade on

Sergeeva-Olga [200]

Answer:

86%

Step-by-step explanation:

88 times 5 = 440

78 + 86 + 96 + 94 = 354

440 - 354 = 86

3 0

3 years ago

The outside radius of a truck tire is 11 inches. Approximately how far will the truck have traveled after 3 rotations of the the

ANTONII [103]

Answer:

The distance = 207.3 inches

Step-by-step explanation:

∵ The distance = number of revolution × circumference

∵ The radius of the circle = 11 inches

∴ The circumference = 2 × π × r = 2 × π × 11 = 22π inches

∵ Number of revolution = 3

∴ The distance = 3 × 22π = 66π = 207.3 inches

4 0

4 years ago

is 1 < or> then -4, is -5 < or> -2, is -3 <or> 2, is -1<or>-4, is 5< or>0, is-2<or>3

yuradex [85]

1>-4
-5<-2
-3<2
-1>-4
5>0
-2<3

8 0

3 years ago