2 years ago

The radius of a circle is 7 kilometres. What is the length of a 90° arc?

Mathematics

1 answer:

malfutka [58]2 years ago

8 0

Answer:

Step-by-step explanation:

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Christina's ice cream parlor sold 60 vanilla cones on the first day of summer. If the goal is to increase the number of vanilla

nlexa [21]

Answer:

formula: 60x4(to the power of 20)

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3 years ago

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is picking out some movies to rent, and he has narrowed down his selections to 5 documentaries, 7 comedies, 4 mysteries, and 5 h

pogonyaev

Answer: 91

Step-by-step explanation:

Given : The number of documentaries = 5

The number of comedies = 7

The number of mysteries = 4

The number of horror films =5

The total number of movies other than comedy = 14

Now, the number of possible combinations of 9 movies can he rent if he wants all 7 comedies is given by :-

$^7C_7\times^{14}C_2\\\\\dfrac{7!}{7!(7-7)!}\times\dfrac{14!}{2!(14-2)!}\\\\=(1)\times\dfrac{14\times13}{2}\\\\=91$

Therefore, the number of possible combinations of 9 movies can he rent if he wants all 7 comedies is 91 .

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3 years ago

Hich rule about the sign of the quotient of positive and negative decimals is correct?

MrRissso [65]

B is the right answer

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3 years ago

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Bart wants to deposit his piggy bank savings into a savings account. If he deposits $325. 76, how many whole years will it take,

vladimir1956 [14]

Answer:

Step-by-step explanation:

Compounding interest :

Future value of money = Present value * (1+ r)^N

r - interest rate

n - number of period

In our example, Present value = 325.76, FV = 400, r = 2%, and we need to find N

by solving that we can find it that N is equal to 10.3675

Simple interest :

400 - 325.76 = 74.26$ we need to increase

325.76*2% = 6.5152$ each year

74.26 / 6.5152 = 11.3949

as a whole year = 12years

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2 years ago

What are the next three terms in these 2 sequences?<br><br> 1. 3, 8, 23, 68<br><br> 2. 2, 6, 18

Karolina [17]

1:
3*3=8 ;
8*3=23
23*3=68
68*3=204
1.3,8,23,68,204 ...

2.
2*3=6
6*3=18
18*3=54
2, 6,18,54

multiply all on 3)

3 0

3 years ago