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horsena [70]
3 years ago
15

What are Numbers? Why do we need them?​

Mathematics
1 answer:
il63 [147K]3 years ago
3 0
A number is a mathematical object used to count, measure, and label
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Ten times the sum of half a number x and 8 is 12.
Diano4ka-milaya [45]

BREAKDOWN

10 times: 10 ×

The sum of: ( ) + ( )

which would be : 10 × ( ) + ( )

half a number: 10 × ( X/2 ) + ( )

and 8: 10 × ( X/2 ) + ( 8 )

is 12 : 10 × ( X/2 + 8 ) = 12

xxxxxxxxxxxxxxxxxxx

SIMPLIFICATION

Multiply ten: 10 X (X/2 + 8) = 12

which equals to: 5x + 80 = 12

bring the like terms together: 5x = 80 - 12

Equals: 5x = 78

Find out X:. x = 78/5

FINAL ANSWER:. X = 15.9

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6 0
3 years ago
It took Ruby 23 minutes to make meatballs and 29 minutes to make tomato sauce. How much time did it take Ruby to make meatballs
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Answer:

52 minutes unless she was multi-tasking then it took her 29 mins to do all

Step-by-step explanation:

52 minutes

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3 years ago
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An arc subtends an angle of 72 degree at the circumference of a circle of radius 5 cm. calculate the length of the arc in terms
Irina-Kira [14]

Hope you understand the solution. Call my attention if you need any help

4 0
3 years ago
Thanks for helping, I appreciate it!
timofeeve [1]
14. 5
15. 2
16. -10
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Given P(A) = 0.8, P(B) = 0.51 and P(ANB) = 0.468, find the value of
masha68 [24]

Answer:

Step-by-step explanation:

P(BA)=P(B)+P(A)-P(AnB)

= 0.51+0.8-0.468

=1.31-0.468

=0.842

P(BA) = 0.842

7 0
3 years ago
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