MATHEMATICS HIGH SCHOOL

What part of the circumference is an arc whose measure is 30°?a.1/12
b.1/10
c.1/8
d.1/6

Answers

Answer 1
Answer: Circumference of a circle:
C = 2 r π;
Length of an arc:
L = r π α / 180°
L = r π · 30° / 180° = r π /6
r π /6   :   2 r π = 1/6 : 2 = 1/12
Answer: A ) 1/12 

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I need help with 1+1 First answer gets Brainliest(Please explain how you got the answer)

Answers

Answer:

2

Step-by-step explanation:

Solve i=prt if i=105, p=700 & r=0.05

Answers

assuming you're trying to find t, first you would plug in the numbers given to get 105=(700)(.05)t
next, you multiply p and r to get 105=35t
after that, you divide the 105 by 35 to get the final answer of t=3

Multiply (3x – 5y)(2x + 3y)

Answers

Answer:

6x² - xy - 15y²

Step-by-step explanation:

To multiply these two binomials together, we can use FOIL. FOIL stands for:

First: Multiply the first terms of the binomials together.

Outer: Multiply the first term of the first binomial by the second term of the second binomial.

Inner: Multiply the second term of the first binomial by the first term of the second binomial.

Last: Multiply the second (last) terms of the two binomials together.

(3x - 5y)(2x + 3y) = (3x)(2x) + (3x)(3y) + (-5y)(2x) + (-5y)(3y)

= 6x² + 9xy - 10xy - 15y²

= 6x² - xy - 15y²

I hope you find my answer helpful.

"2.3 U is the set of cities in a country.A is the set of cities that have a zoo.
B is the set of cities that have a symphony.
Describe A ∩ B′ in words."

Answers

A ∩ B is the subset of cities that have both a zoo and a symphony

Final answer:

'A ∩ B′' in a set theory context represents the set of cities that have a zoo and do not have a symphony.

Explanation:

In the field of mathematics, particularly in set theory, the notation A ∩ B′ refers to the intersection of two sets. The 'A' represents the set of cities with a zoo, and 'B' is the set of cities with a symphony. The symbol '∩' stands for intersection and 'B′' stands for the complement of B, or in other words, cities that do not have a symphony.

Therefore, A ∩ B′ represents the set of cities that have a zoo and do not have a symphony. This would be the common elements of these two particular sets - cities with a zoo (set A) and cities without a symphony (complement of set B).

Learn more about Set Theory here:

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What percent of 17 is 20.4

Answers

If you would like to know what percent of 17 is 20.4, you can calculate this using the following steps:

x% of 17 is 20.4
x% * 17 = 20.4
x/100 * 17 = 20.4
x = 20.4 * 100 / 17
x = 120%

Result: 120% of 17 is 20.4.

20.4 is 120 percent (120%) of 17.

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to compute a percentage of a number, we should divide it by its whole and then multiply it by 100. The proportion therefore refers to a component per hundred.

So, in order to find the percent of a number we need to multiply it by the percent value and then divide it by hundred. That means if we need to find the x% of a number, we should multiply the number with x/100.

So,

17 × x/100 = 20.4

17x = 20.4 ×100

17x = 2040

Therefore,

x = 2040/17

x = 120

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PLEASE HELP GIVING BRAINLIEST I NEED THIS ANSWER TO GRADUATE

Answers

Answer:

area = 2.28

Step-by-step explanation:

area of triangle is 1/2*b*h

area = (1/2)*3.8*1.2

area = 2.28

Answer:

2.28

Step-by-step explanation:

Area of triangle =(base*height)/2

And base=1.2 cm

Height=38 mm ( change it to cm as they need the answer in square cm) which is 3.8 cm

So (1.2*3.8)/2=2.28
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