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2 years ago

Examples of properties communative, associative, and identity?

Mathematics

2 answers:

Stella [2.4K]2 years ago

6 0

Commutative 3+4=4+3

Associative (1+2)+3= 1+(2+3)

Identity x+0=x

BlackZzzverrR [31]2 years ago

3 0

Answer:

Communative: 12 x 5= 5 x 12 Associative: (5) + 6 = (8) + 3 Identity: 5 x 1= 5

Step-by-step explanation:

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PLEASE HELP ME OUT ASAP! I WOULD REALLY APPRECIATE IT AND GOD BLESS

77julia77 [94]

To approximate the P(x<27) we need to find the z-score of the data, this will be given by:
z=(x-μ)/σ
where:
μ-mean
σ-standard deviation
x=27, μ=32, σ=4
z=(27-32)/4
z=-5/4
z=-1.25
thus
P(x<27)=P(z<-1.25)
=0.1056
=10.56%

Answer: 10.56%

5 0

3 years ago

Steph runs a vehicle body repair shop with one mechanic in Cleveland. Repair time for vehicles is exponentially distributed, wit

horsena [70]

Answer:

System utilization = 0.7 or 70%

Step-by-step explanation:

Given arrival rate of customer = 15 customer/Hour

Servie rate = $\dfrac{60}{2.8} customer/Hour$

Now, use the below formula to find the system utilization.

System utilization = $\dfrac{\text{ Arrival rate of customer }}{\text{ Servie rate}}$

System utilization = $\dfrac{15}{ \dfrac{60}{2.8}}$

System utilization = 0.7 or 70%

5 0

3 years ago

Can you help me with this??

siniylev [52]

8*8 - 4*4*pi*(1/2) = 64 - 8*pi

6 0

3 years ago

Please answer these 2 questions. I promise to mark as brainliest if you can solve with steps. Thank you.

neonofarm [45]

Answer:

see explanation

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{BC}{EF}$ = $\frac{AB}{DE}$ ( substitute in values )

$\frac{x-1}{18}$ = $\frac{4}{12}$ ( cross- multiply )

12(x - 1) = 72 ( divide both sides by 12 )

x - 1 = 6 ( add 1 to both sides )

x = 7

------------------------------------------------------------------------------

The parallel line segment SV is half of RW

that is x = 7.5

SV also divides the sides RT and WT in proportion, that is

$\frac{10}{3}$ = $\frac{8}{y}$ ( cross- multiply )

10y = 24 ( divide both sides by 10 )

y = 2.4

6 0

2 years ago

Evaluate the polynomial when a. x = 0 and b. X = - 1. x^2 - 8x - 7

jeka57 [31]

Answer:

(a) -7, (b) 2

Step-by-step explanation:

a) When x = 0,

=> x² - 8x - 7

=> (0)² - 8(0) - 7

=> 0 - 0 - 7

=> - 7

b) When x = -1,

=> x² - 8x - 7

=> (-1)² - 8(-1) - 7

=> 1 + 8 - 7

=> 9 - 7

=> 2

Hope it helps.

3 0

2 years ago