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4 years ago

INSERT PARENTHESES in

Mathematics

1 answer:

Nina [5.8K]4 years ago

6 0

First, let's see what the answer is when we follow this equation using PEMDAS.

5 + 4 x 2 + 6 - 2 x 2 - 1

5 + 8 + 6 - 4 - 1

Now, let's trying grouping 5 + 4 together, and solving it again.

(5 + 4) x 2 + 6 - 2 x 2 - 1

9 x 2 + 6 - 2 x 2 - 1

18 + 6 - 4 - 1

24 - 5

So, the parentheses go around 5 + 4 to get your answer!

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Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic re

mixer [17]

Answer: range= 26, variance= 80 and standard deviation= 8.94

Step-by-step explanation:

Range = highest - lowest

Range = 146 - 120

Range= 26

Let m be mean

M=mean=sum/n

Mean=(120+134+146+127+138+133) / 6

M=798/6

M=133

The standard deviation sample formula:

S.D = sqrt( Summation of |x-m|^2 / n-1)

Let start finding:

|x-m|^2

For 1st: |120-133|^2=169

For 2nd: |134-133|^2=1

For 3rd: |146-133|^2=169

For 4th: |127-133|^2=36

For 5th: |138-133|^2=25

For 6th: |133-133|^2=0

Summation of |x-m|^2 = 400

The standard deviation formula is :

S.D = sqrt( Summation of |x-m|^2 / n-1)

S.D= sqrt(400 / 5)

S.D=sqrt(80)

S.D= 8.94

Variance = (Summation of |x-m|^2 / n-1)

Variance= 400/5

Variance= 80

3 0

4 years ago

Read 2 more answers

What is the answer to <br>Given f(x) = 2x + 3 find f(x) = 27.<br>can anyone help?

Zigmanuir [339]

12 is the correct answer

6 0

3 years ago

Read 2 more answers

PLS HELP Given

horrorfan [7]

Step-by-step explanation:

ufxf7tdod8d7dixurdsurdux

5 0

3 years ago

Sue Has 44 Rib bones on display. there are 22 on the right side and 22 on the left on the right of its body on the right side 9/

Murljashka [212]

Answer:

18/44

Step-by-step explanation:

To turn 9/22 into something over 44, we need to figure out what to multiply it by.

44 / 22 = 2.

Multiply 9/22 by 2:

9/22 * 2 = 18/44

4 0

3 years ago

I really need help!! God bless you.

Nastasia [14]

Ok so 65 percent of 10,000 is 6500. This means that she has to get the other 3500 herself. Since she has a year to save divide 3500 by 12 for each month of the year which is equal to $291.67. Then simply round up to get your answer which is A. $292.

Hope this helped and good luck

3 0

4 years ago