A sphere has radius r unit. Find the following. (a) Circumference of great circle​

Answers

Answer 1

Answer:

2πr

Step-by-step explanation:

the Circumference of great circle =

2×π×r or 2πr


Related Questions

I need help! Please explain if you can!
I need to find the csc A, sec A, and cot A.

Answers

Step-by-step explanation:

the length of AB = √10²+7²=√149

so,

csc A = AB/BC = 149/ 7

sec A = AB/AC = 149/ 10

cot A = AC/BC = 10/7

colo
Irrational Numbers
Place each number in the correct location on the Venn diagram.
11. -
Real Numbers
Rational Numbers
12. - 100
Integers
13.
Whole Numbers
14. 125
G

Answers

-5/9 is rational, and its none of the other choices (integer, whole, irrational). So this value goes in the "rational" rectangle, and outside any other region.

The number [tex]-\sqrt{100}[/tex] turns into -10 after simplification. We see that this number is both rational and an integer. The best place for it is inside the "integer" circle. Note how this circle is entirely in the "rational" rectangle. We do not place it in the "whole number" circle because whole numbers are not negative.

The number [tex]\pi[/tex] is irrational since its decimal expansion goes on forever without any known pattern.

The number [tex]\sqrt{25}[/tex] simplifies to 5. This goes in the "whole number" circle.

Check out the diagram below.

If Greg can do a job in 6 hours, and pepper can do that same job in 5 hours, how long will it take to complete the job if they work together

Answers

5 hours and 30 minutes ya que ambos trabajaran la mitad del trabajo

Factor this polynomial completely.
x2 - 81

Answers

a is the correct answer!
81 is a negative, so the 9’s have to be a positive and a negative

hope this helps!
The first answer is right

Please help basic Geomerty question!

Answers

Answer:

Point B :(6, 7)

Step-by-step explanation:

Point B:(x, y)

1= - 4+x/2

2= - 4+x

x=6

7.5= 8+y/2

15= 8+y

y=7

x−8<−1 whats x

(this is for so it goes through: oogogogogogo boboboboboboboogoogbobgob)

Answers

add 8 to both sides

x - 8 + 8 < -1 + 8
x < 7

A car uses 8 litres of gasoline to travel 160 km. How much gasoline will the car use to travel 400 km?

Answers

Answer:

20 liters of gasoline

Step-by-step explanation:

Create a proportion where x is the amount of gasoline needed to travel 400 km:

[tex]\frac{8}{160}[/tex] = [tex]\frac{x}{400}[/tex]

Cross multiply and solve for x:

160x = 3200

x = 20

So, the car will use 20 liters of gasoline to travel 400 km.

Answer:

The car will use 20 liters of gas

Step-by-step explanation:

160KM/8L = 20KM per liter

400/20 = 20

7| x+ 3| = 42 solving absolute values

Answers

Answer:

x + 3 = -6  or  x + 3 = 6

Step-by-step explanation:


Determine what fraction of the square is shaded
Explain your reason

Answers

Answer:

is the picture moving or am I tripping

Step-by-step explanation:

I think 1/4

17. Negative numbers are closed under addition.
True or false

Answers

Answer:  True

===========================================================

Explanation:

Picking any two negative numbers, then adding them, will result in some other negative number. This is why the set of negative numbers is closed under addition.

Examples:

-2 + (-3) = -5

-10 + (-14) = -24

-7 + (-9) = -16

This is because when you add two negatives, you're adding their positive counterparts. Going to the first example above, we would say 2+3 = 5 and then just make everything negative. There's no way to add two negative numbers, and get a positive result (and we can't get 0 either).

You can think of it in terms of money and debt. The -2 represents being 2 dollars in debt. Then adding on 3 more dollars of debt leads ultimately to 5 dollars overall in debt.

On 1-38 I don’t understand B and C. Please help! And be as specific as possible

Answers

Answer:

b

Step-by-step explanation:

the middle number to find

hi how to solve this question n(n+1)2
; where n=9


Answers

Answer:180

Step-by-step explanation:

.

Answer:

2×9(9+1)

18(10)

.180.

there are 3 types of fruits in the basket.mango,banana and guava. 15 children likes mango,20 children likes banana,20 likes guava 3 children like mango and banana,5 children like mango and guava,10 children like banana and guava and 2 likes all the three fruits. How many children likes one fruit only?write your answer in the diagram below​

Answers

Step-by-step explanation:

25 students like mango

35 students like Banana

37 students like Guava

Help me outtttttttttt

Answers

Answer:

∠1 = 5 degrees

∠2 = 85 degrees

Step-by-step explanation:

if we add ∠1 and ∠2 that will be 90 degrees (as it is straight angle and its already given in the picture)

( x - 12) + 5x = 90

6x -12 = 90

6x = 90 + 12

6x = 102

x = 102/6

x = 17

Put 17 in both the angles instead of x

∠1 = ( x-12)

    = ( 17 - 12)

    = 5

∠2 = 5x

     = 5 (17)

      = 85

now you can even Cross-check

5 + 85

= 90 degrees

Cross-checked

If n(U)= 50, n(A)= 30, n(B) = 20 and n(AUB)= 45, find i) n(A) ii) n(B) ii) Express in Venn diagram​

Answers

hope it will help and plz ignore that circles .

1. What is the length of AD?
(1 point)
D
А A
B
+
++
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5
.
6 7
8 9 10
017
015
07
01

Answers

Answer:

15

Step-by-step explanation:

you can add the absolute value of -7 with 8 so it's 15

The length of AD on the number line is,

⇒ AD = 15

What is mean by Number line?

Number line is a horizontal line where numbers are marked at equal intervals one after another form smaller to greater.

We have to given that;

Number line is shown in figure.

And, The point A is at - 7 on number line.

The point D is at 8 on number line.

Hence, We get;

The length of AD on the number line is,

⇒ AD = | - 7 - 8 |

⇒ AD = | - 15 |

⇒ AD = 15

Therefore, The length of AD on the number line is,

⇒ AD = 15 units

Learn more about the number line visit:

brainly.com/question/28223520

#SPJ7

I need help with this one

Answers

Factors always multiply each other.

The only option that multiplies something is (y^3 + 3)
So the answer is B.

An airplane is coming in for a landing and the pilot knows she is 5473 m above the ground and she also knows that Angle of depression from the plane to the landing strip is 58º. How far is the plane from the landing strip?

Answers

Answer:

3420 m

Step-by-step explanation:

when we say distance, we mean ground distance, right ? not air distance.

so, essentially, the angle from the straight line the plane could be going at that moment down to the touch down point on the landing strip is 58 degrees.

that means the angle of elevation (between the line to the touch down point and the height "line" of the airplane) is 90-58 = 32 degrees

the height of the airplane (= distance from ground) is 5473 m.

now, we also know that the angle between height and the ground connection to the touch down point is 90 degrees (as height is always meshed straight up/down).

so, we know even the third angle (at the touch down point between ground and the line to the airplane)

= 180 - 90 - 32 = 58 degrees.

if we imagine now a circle being drawn with the touch down point being center and going through the right- angle corner point on the ground right under the airplane, we see that the ground distance from that corner to the landing strip is the radius of that circle.

therefore, the height is tan() × r of the angle at the touch down point.

5473 = tan(58) × r

r = 5473 / tan(58) = 3420 m

Help!!!!
B=
P=
H=
LA=
SA=
V=

Answers

Answer:

Given a cube with the side of 7 in

Base area:

B = a² = 7² = 49 in²

Perimeter:

P = 4a = 4*7 = 28 in

Height:

H = a = 7 in

Lateral area:

LA = 4a² = 4*49 = 196 in²

Surface area:

SA = 6a² = 6*49 = 294 in²

Volume:

V = a³ = 7³ = 343 in³
Side=a=7inArea of base:-

[tex]\\ \sf\longmapsto a^2=7^2=49in^2[/tex]

Perimeter :-

[tex]\\ \sf\longmapsto 4a=4(7)=28in[/tex]

Height:-

As its a cube height=side=7in

Lateral surface area :-

[tex]\\ \sf\longmapsto 4a^2=4(7^2)=4(49)=196in^2[/tex]

Total Surface Area:-

[tex]\\ \sf\longmapsto 6a^2=6(7^2)=6(49)=294in^2[/tex]

Volume:-

[tex]\\ \sf\longmapsto a^3=7^3=343in^3[/tex]

Grace and her dad are planning to attend the state fair. An adult ticket is $15.00. The price of an adult ticket is one half the price of a student ticket plus $8.00. Write an equation to determine how much Grace will pay for a student ticket.

one halfx + 8 = 15
one halfx − 8 = 15
one halfx + 15 = 8
one halfx − 15 = 8

Answers

Answer:

Option 1 is the correct equation.

Step-by-step explanation:

x = price of the student ticket.

One half price of x + $8 = adult ticket price ($15)

Answer:

The correct answer is A

Because taking the student ticket to be x

one half of x + 8 =15

Two balls are drawn in turn without replacement from a box containing three green and two white balls.Find the probability of drawing
a)two green balls
b)two white balls
c)two balls of the same colour
d)two balls of different colours

Answers

Answer:

A. 2/5

B.2/5

C. 3/5

D. 5/5=1

hey please help i’ll give brain

Answers

Answer:

7

Step-by-step explanation:

Using the commutative property of addition

a+b = b+a

6+7=7+6

He’s right it’s 7



Have a nice day

Sonia finished the 200-meter dash in 26.12 seconds. Gladys finished the 200-meter dash 1.08 seconds
faster than Sonia. How long did it take Gladys to run the 200-meter dash?
O 25.04 seconds
O 26.20 seconds
O 27.04 seconds
O 27.20 seconds

Answers

Answer:

25.04

Step-by-step explanation:

26.12-1.08

=25.04

Answer:

25.04

Step-by-step explanation:

For this problem we have to use subtraction

If Sonya finished the dash is 26.12 seconds and Gladys finished it 1.08 seconds faster, we have so subtract 26.12 by 1.08 to get her time

So we get 25.04

Hope this helps! :D

In triangle ABC, m ZA = 47°, m ZB = 62°. m ZC =
a. 81°
b. 61°
C. 71
d. 51°

Answers

Answer:

m ZC = 71 degrees. Option C.

Step-by-step explanation:

Triangles always measure a total of 180 degrees.

47 + 62 + c = 180

109 + c = 180

c = 71

Answer:

71°

Step-by-step explanation:

The total angles in a triangle should equal 180°

a + b + c = 180

47 + 62 + c = 180

109 + c = 180

180 - 109 = 71

c = 71°

Hope this helped!

-2/3 + 5/6 = __________

Answers

Answer:

0.16 recurring

hope this helps!

Answer:

1\6

Step-by-step explanation:

[tex]\frac{-2}{3}+\frac{5}{6}=\frac{-4+5}{6}=\frac{1}{6}[/tex]

plzz solve the question ​

Answers

Answer:

a.8x^2+18x+9

8x^2+(9+2)x+9

8x^2+2x+9x+9

2x(4x+1)+9(x+1)

(2X+9)+(4x+1)+(x+1)

pls answer my question ​

Answers

Hello!

In this question, you are finding the square root of 100-84.

The first thing you should do is do whatever is inside the square root sign. So, do 100-84:

100-84= 16

Now, you can take the square root of that number. Taking the square root means which number, when multiplied by itself, equal the number under the square root sign? In this case, the answer is 4!

This is because 4 multiplied by itself ( 4 times 4) is 16!

Answer: 4

I hope this helped! Comment if you have questions!

Answer:

have a great day

god is great

the horizontal position of a point

Answers

Ansienidq

scsunacu

Step-by-step explanation:

24)
12
21
X
84
91
28

Answers

Answer:

13

Step-by-step explanation:

12×7 = 84,

so the scale ratio is 1/7

now 91×1/7

= 91/7

= 13

Need help with this math question. Will give brainliest

Answers

Answer:

I think it should be 360 (C)

Answer:

c)360

Step-by-step explanation:

x−0.8x=72

0.2x=72

x= 72/0.2

answer=360

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