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kozerog [31]
3 years ago
8

WILL GIVE BRAINLIEST!!! TIMED!!! EASY!!! please help with number 2 asap

Mathematics
2 answers:
WITCHER [35]3 years ago
7 0

Answer:

g.

14

Step-by-step explanation:

the formula for circumference is 2 pi r so divide 20 in half and add 4 to that

OleMash [197]3 years ago
5 0

Answer:

I think the answer is C. 14 cm

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Debora [2.8K]
Omg if I had my TI calculator I could help you !!
7 0
3 years ago
Help me out pleaseeee
gladu [14]

4x - y = 5 --> 4x = y + 5

substitute

4x + 4y = -4

(y + 5) + 4y = -4

5y + 5 = -4

5y = -9

y = -1.8

solve x

4x = y + 5 = -1.8 + 5 = 3.2

x = 3.2/4 = 0.8

6 0
3 years ago
Let a = {1, 2, 3, 4, 5} b = {1, 3, 5} c = {4, 6}. find the cardinality of the given set. 33. n(a) 34. n(b) 35. n(a ⋃
bearhunter [10]

1) n(a) = 5


The cardinality of a set is the number of elements in that set. So, you simply need to count how many elements belong to the set, and the answer is 5


2) n(b) = 3


Simlarly, in this case you need to count how many elements belong to the set, the answer is 3


3) n(a ⋃ c) = 6


The union of two set is a set composed by all the elements belonging to either one of the sets, with no repetitions. So, since the first set contains all numbers from 1 to 5, the second set contains a 4, which however already belonged to the first set, but also a 6, which is added in the union. So, a ⋃ c = {1,2,3,4,5,6}, and thus n(a ⋃ c)=6.


4) n(a ⋂ c) = 1


The intersection of two sets is a set composed by the elements belonging to both sets. So, 1,2,3 and 5 don't belong to the intersection, because they belong to the first set alone, while 6 doesn't belong to the intersection because they don't belong to the first one. So, a ⋂ c = {4}, and thus n(a ⋃ c)=1.

4 0
3 years ago
Read 2 more answers
Will give brainliest if this math question is answered correctly
solniwko [45]

Answer:  37 fruit pies+42 fruit juices=79 total items

(a) 37*1.65= $61.05

    42*1.36= $57.12

(b) Mr Sanchez's class earned more money.

(c) Mr. Sanchez's class earned $3.93 more than Mr. Kelly's class

    $61.05-$57.12= $3.93


Step-by-step explanation:


6 0
3 years ago
If the volume is 400 in. cubed and height is 5 in. The width is 8 in. What is the length
makvit [3.9K]

Answer:

its 10 in

Step-by-step explanation:

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