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Rama09 [41]
3 years ago
8

Plzs help up till 13 please!

Mathematics
1 answer:
svetoff [14.1K]3 years ago
5 0
15
 1.5
.15
.015
5
.5
1.5
2.5
6.5
1.5
.15
.25
.35
when finding the midpoint its the number equally between the two numbers
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TIME REMAINING
alekssr [168]

The solution of the equations is (-2, -1)

<h3>System of equation:</h3>

2x - 3y = -1

11x  - 9y = -13

Using elimination method let multiply the first equation by -3.

Therefore,

-6x + 9y = 3

11x - 9y = -13

5x = -10

x = -10 / 5

x = -2

let's find y as follows;

2(-2) - 3y = -1

-4 - 3y = -1

-3y = -1 + 4

-3y = 3

y = 3 / -3

y = -1

learn more on system of equation here: brainly.com/question/1451150

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Answer:

40+45

Step-by-step explanation:

17x5 is 85

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2 years ago
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A certain candle is designed to last nine hours. However, depending on the wind, air bubbles in the wax, the quality of the wax,
Ierofanga [76]

Answer:

Step-by-step explanation:

a) P(X > 6) = (9.5-6)/(9.5-5.5) = 3.5/4 = 0.875

b) P(X < 7) = (7-5.5)/(9.5-5.5) = 1.5/4 = 0.375

c) E(X) = (9.5+5.5)/2 = 7.5

Standard deviation = (9.5-5.5)/sqrt(12) =4/3.46 = 1.154

P= 1.156*2/(9.5-5.5) = 2.308/4 = 0.577

d) P(X > t) = 0.25

 (9.5-t) /(9.5-5.5) = 0.3

9.5-t = 1.2

t = 9.5-1.2 = 8.3

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3 years ago
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Aleksandr [31]

Answer:

1

Step-by-step explanation:

.75-.25 is .5

1/2 is equal to .5 so .5 +.5 is 1

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54 because i got that a b and dc equal 6 and ad and bc equal 9 
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