1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
eduard
3 years ago
13

Select the number property that will justify the step in the following expression.

Mathematics
1 answer:
umka2103 [35]3 years ago
5 0
Positions of 2, 5, 17 are not changed - so its not commutative property 

You might be interested in
The heights of women aged 20 to 29 are approximately Normal with mean 64 inches and standard deviation 2.7 inches. Men the same
masha68 [24]

Answer: The z-scores for a woman 6 feet tall is 2.96 and the z-scores for a a man 5'10" tall is 0.25.

Step-by-step explanation:

Let x and y area the random variable that represents the heights of women and men.

Given : The heights of women aged 20 to 29 are approximately Normal with mean 64 inches and standard deviation 2.7 inches.

i.e. \mu_1 = 64   \sigma_1=2.7

Since , z=\dfrac{x-\mu}{\sigma}

Then, z-score corresponds to  a woman 6 feet tall (i.e. x=72 inches).

[∵  1 foot = 12 inches , 6 feet = 6(12)=72 inches]

z=\dfrac{72-64}{2.7}=2.96296296\approx2.96

Men the same age have mean height 69.3 inches with standard deviation 2.8 inches.

i.e. \mu_2 = 69.3   \sigma_2=2.8

Then, z-score corresponds to a man 5'10" tall (i.e. y =70 inches).

[∵  1 foot = 12 inches , 5 feet 10 inches= 5(12)+10=70 inches]

z=\dfrac{70-69.3}{2.8}=0.25

∴ The z-scores for a woman 6 feet tall is 2.96 and the z-scores for a a man 5'10" tall is 0.25.

6 0
3 years ago
Line r and m are parallel. Find the value of x.
vladimir2022 [97]

Answer:

Answer:

10x-3=7x+45 corresponding angle

10x-7x=45+3

3x=48

x=48/3=16

value of x is 16.

8 0
2 years ago
How do I answer this​
andreev551 [17]

Answer:

The 4 interior angles in the square are each 90 degrees. The four angles formed by the intersection of the 2 diagonal lines are each 90 degrees. The rest of the angles <PQT, <RQT, etc. Are all 45 degrees.

4 0
2 years ago
Read 2 more answers
Please show work! Please and thank you!
My name is Ann [436]
Question 5(A)
Answer:51
Explanation
Step 1:evaluate the power
Step2:add the numbers
Step 3:calculate the square root
Step4:reduce the fraction with 4
Step5:calculate the sum or the difference and ur final answer is 51

Question 5(B)
Answer:9/2
Explanation:
Step 1:calculate the difference
Step 2:evaluate the power
Step 3:subtract the numbers
Step 4:calculate the sum
And ur final answer is 9/2

Question 6:(A)
Answer:x=36/11
Explanation:
Step 1:distribute 4 through the parentheses
Step 2:move variable to the left hand side and change its sign
Step 3:move constant to the right hand side and Change it’s sign
Step 4:collect like items
Step 5:add the numbers
Step 6:divide both sides of the equation by 11
And ur final answer is x=36/11

Question 6(B)
Answer:x=192
Explanation:
Step 1:multiply both sides of the equation by 3
Step 2:move the constant to the right hand side and change its sign
Step 3:add the numbers
And ur final answer is x=192

Question 7
Answer B($60)
Explanation:the shape is rectangular and it is 12 feet long and the other is 5 feet wide it’s like finding the area of it so u basically need to multiply 12 by 5 and ur answer is 60

Here is the answers and the explanations step by step I hope it helps
Have a great day and stay safe

6 0
3 years ago
There are 8 ounces in 1 cup and 2 cups in 1 pint. Mrs. Tores picked 5 pints of blueberries
vlabodo [156]

Answer:

80 oz

Step-by-step explanation:

5 pints is 10 cups. 8 oz in a cup. Multiply 10(8) and you get 80 oz

5 0
2 years ago
Other questions:
  • A glass vase weighs 0.61 lb. How much does a similarly shaped vase made of the same glass weigh if each dimension is 2 times as
    14·1 answer
  • In a company, 70% of the workers are women. If 1620 men work for the company, how many workers are there in all?
    15·1 answer
  • 4x squared plus 6x plus 9=0
    6·1 answer
  • Expand and simplify (x - 2)(- 1)
    15·1 answer
  • — 3х - 6 +(-1)<br> Helpp <br> Can anybody help me?
    7·1 answer
  • The cost for the company to ship the boxes varies indirectly with the number of boxes being shipped. If 25 boxes are shipped at
    11·1 answer
  • Find the Error. Judith states that -|14| = 14 because the absolute value can never be negative. Find her mistake and correct it.
    13·1 answer
  • HELLPPPP MEEEEEEEE
    6·1 answer
  • Select the correct answer.
    8·1 answer
  • CAN SOMEONE HELP ME PLEASE
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!