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garri49 [273]
3 years ago
13

Answer correcly / explain a lil. match them....

Mathematics
1 answer:
Vlada [557]3 years ago
6 0

Answer:

\displaystyle \boxed{66 \times 7}\:7(60 + 6)

\displaystyle \boxed{97 \times 4}\:4(100 - 3)

\displaystyle \boxed{8(4 + 2)}\:32 + 16 = 48

\displaystyle \boxed{5(9 - 6)}\:(5 \times 9) - (5 \times 6)

\displaystyle \boxed{3(4 + 7)}\:(3 \times 4) + (3 \times 7)

Step-by-step explanation:

According to the Order of Operations [GEMS\BOMDAS\PEMDAS etc.], you evaluate everything in parentheses first before preceding with your Division & Multiplication and Subtraction & Addition. When you do this, you will know exactly which expression corresponds with its Distributive Property expression.

I am joyous to assist you anytime.

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The mean finish time for a yearly amateur auto race was 186.32 minutes with a standard deviation of 0.305 minute. The winning​ c
uranmaximum [27]

Complete Question

The mean finish time for a yearly amateur auto race was 186.94 minutes with a standard deviation of 0.305 minute. The winning car, driven by Roger, finished in 185.85 minutes. The previous year's race had a mean finishing time of 110.7 with a standard deviation of 0.115 minute. The winning car that year, driven by Karen, finished in 110.48 minutes.

Find their respective z-scores.

 Who had the more convincing victory?

A. Roger​ had a more convincing victory because of a higher z-score.

B. Karen a more convincing victory because of a higher z-score.

C. Roger had a more convincing victory, because of a lower z-score.

D. Karen a more convincing victory because of a lower z-score.

Answer:

The correct option is  D

Step-by-step explanation:

From the question we are told that

  The mean of the current year  is  \mu_c =  186.32 \  minutes

   The standard deviation is  \sigma_c  =  0.305 \  minutes

   The time taken by  the winning car for the current year  is  x =  185.85 \ minutes

  The mean of the previous  year  is  \mu_p =  110.7 \  minutes

   The standard deviation the previous  year  is  \sigma_p  = 0.115  \  minutes

 The time taken by  the winning car for the previous year  is  y =   110.48 \ minutes    

Generally the z-score for current year is mathematically evaluated as

     z_c  =  \frac{x- \mu_c}{\sigma_c }

=>     z_c  =  \frac{ 185.85- 186.32}{0.305 }

=> z_c  = -1.536

Generally the z-score for previous year is mathematically evaluated as

     z_p  =  \frac{y- \mu_p}{\sigma_p }

=>     z_p  =  \frac{ 110.48-110.7}{0.115  }

=> z_p  = -1.913

From the value obtained we see that  z_p  <  z_c , Hence  Karen had a more convincing victory because of the lower z -score.

5 0
3 years ago
Yo i need help please no links i just need the correct answer to pass this
Black_prince [1.1K]
3.2 i believe!!! sorry if i’m late
6 0
3 years ago
Find five arithmetic means between-18 and 36
Aleksandr [31]
Are there any answer choices ?
3 0
3 years ago
Can some one help? I don't really understand this​
Alex Ar [27]

Answer:

4 pull ups and 32 push ups

Step-by-step explanation:


5 0
3 years ago
19.6 ÷ 63
MAXImum [283]

25.2 is the answer

19.6/7=2.8

2.8 x 9= 25.2

hope this helps

7 0
3 years ago
Read 2 more answers
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