2 years ago

Faind the value of 9z-2 when z=3

Mathematics

1 answer:

allsm [11]2 years ago

7 0

Answer: 25

9(3)-2

9(3)=27

27-2=25

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Solve 2X squared plus X equals 15

Karo-lina-s [1.5K]

Answer:

x=5

Step-by-step explanation:

2x+x= 3x

3x=15

15/3=5

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3 years ago

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If P(A)=.55, P(B)=.32 And P(AuB)=.70,

son4ous [18]

Answer:

A. 0.5313

B. 0.15

Step-by-step explanation:

Given:

$P(A)=0.55\\ \\P(B)=0.32\\ \\P(A\cup B)=0.70$

First , use formula

$P(A\cup B)=P(A)+P(B)-P(A\cap B)$

to find $P(A\cap B):$

$0.70=0.55+0.32-P(A\cap B)\\ \\P(A\cap B)=0.55+0.32-0.70=0.87-0.70=0.17$

A. Use formula

$P(A|B)=\dfrac{P(A\cap B)}{P(B)}\\ \\P(A|B)=\dfrac{0.17}{0.32}=\dfrac{17}{32}=0.53125\approx 0.5313$

B. Use formula

$P(A'|B)=P(B)-P(A\cap B)=0.32-0.17=0.15$

4 0

3 years ago

A bicycle store costs $4000 per month to operate. The store pays an average of $75 per bike. The average selling price of each

Montano1993 [528]

Answer:

50 you need to break even

Step-by-step explanation:

4000+75n= stores operating costs

155N=stores profit

155n=4000+75n

-75 -75

80n=4000

80/80 4000/80

N=50

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4 years ago

Write down an expression for the nth term of the following sequence, 7, 16, 25, 34, 43

Ilia_Sergeevich [38]

Answer:9n-2

Step-by-step explanation:

1st = 9*1-2= 7

2nd = 9*2-2= 16

3rd = 9*3-2= 25

4th = 9*4-2 = 34

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4 years ago

Anyone Help. I’ll give brainliest and ye.

babunello [35]

Answer:

Step-by-step explanation:

|-10|=10 so x will equal anything above the number 10. This means that the answer would be A and C since both numbers are more than 10.

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3 years ago

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