MATHEMATICS HIGH SCHOOL

Help me please it’s on spheres thankyou

Answers

Answer 1

Answer:

Answer:

452.3893421 cm^2

452.4 (to one decimal place)

Step-by-step explanation:

Radius (r) - 6cm

The surface area of sphere = 4pi r^2

therefore:

4 * pi * 6^2

4 * pi * 36

144 * pi

452.3893421 cm^2

452.4 (to one decimal place)

Answer 2

Answer:

Answer:

Surface area = 452,4

Step-by-step explanation:

radius = 6 cm

Surface area = 4πr²

Surface area = 4(3.1416)(6)²

Surface area = 12.5664 (36)

Surface area = 452, 3904

Surface area = 452,4

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How do i do this? i cant quite remember

Answers

Answer:

x=-1

y=3

Step-by-step explanation:

hope the answer will helpful to u

Your portfolio has provided you with returns of 8.6 percent, 14.2 percent, -3.7 percent, and 12.0 percent over the past four years, respectively. what is the geometric average return for this period?

Answers

First you have to add all four of your numbers, 8.6+14.2+ -3.7+ 12=31.1. Then you divide your answer by 4, the number of numbers you added, and you get your answer of 7.775.

The inequality of 8z+3-2z<51 is

Answers

8z - 2z < 48
6z < 48
z < 8

Pls help me with this question. Would appreciate step by step explanation.

Answers

Answer:

$\sf\nV_1=2^3\n\textsf{or, }V_1=2^3(1)\n\nV_2=2^3+4^3\n\textsf{or, }V_2=2^3+(2*2)^3=2^3+2^3.2^3\n\textsf{or, }V_2=2^3(1^3+2^3)$

$\sf\nV_3=2^3+4^3+6^3\n\textsf{or, }V_3=2^3.1^3+2^3.2^3+2^3.3^3\n\textsf{or, }V_3=2^3(1^3+2^3+3^3)$

$\sf\n\textsf{So the nth term will be given by: }\n\nV_n=2^3*(1)/(4)n^2(n+1)^2\n\n\textsf{or, }V_n=2n^2(n+1)^2$

A plane is flying due east in still air at 395 km/h. Suddenly, the plane is hit by wind blowing at 55 km/h toward the west. What is the resultant velocity of the plane?

Answers

The resultant velocity relative to the air is still 395 km/hr east.

The resultant velocity relative to the passengers is still zero.

The resultant velocity relative to the ground is (395 east) + (55 west) = 340 km/hr east.

the v towards the air is 395 kn/hr.
v towards passengers is 0.
so the v towards the ground is (395 kn/hr)east + (55km /hr)west = 340
hence solved
welcome :)

What is the surface area of the rectangular prism?200 in2

110 in2

220 in2

180 in