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
kakasveta [241]
3 years ago
10

Prove z + z + z + z = 4z. Replace each step with the correct equivalent expression based on the given property or operation. Dra

g the correct tiles to show the steps in order. z + z + z + z = Step 1 (Multiplicative Identity Property) = Step 2 (Distributive Property) = Step 3 (Addition) = Step 4 (Commutative Property of Multiplication) z • 4 1 + (z • z • z • z) 4z z • 0 + z • 0 + z • 0 + z • 0 z • 1 + z • 1 + z • 1 + z • 1 z • (1 + 1 + 1 + 1) ↓ ↓ ↓
Mathematics
1 answer:
Olenka [21]3 years ago
4 0

Answer:

Step 1: z*1+z*1+z*1+z*1=

Step 2: z(1+1+1+1)=

Step 3: z*4=

Step 4: z*4 = 4z

Step-by-step explanation:

Given

z+z+z+z = 4z

Required

Match the steps with equivalent properties

Step 1: Multiplicative Identity Property

This states that:

x = 1 * x

So, the expression becomes:

z*1+z*1+z*1+z*1=

Step 2: Distributive Property

This states that:

ab + bc = b(a+c)

So, the expression becomes

z*1+z*1+z*1+z*1=

z(1+1+1+1)=

Step 3: Addition

Here, we simply add the expressions in the bracket

z(1+1+1+1)=

z(4) =

z*4=

Step 4: Commutative Property of Multiplication

This states that:

ab=ba

So, we have:

z*4=

z*4 = 4*z

z*4 = 4z

You might be interested in
What are the solutions of the equation x^4 + 95x^2 - 500= 0? Use factoring to solve
Artist 52 [7]
1) given x^4 + 95x^2 - 500

2) split in two factors with common factor term x^2: (x^2 + )(x^2 - )

3) find two numbers that add up 95 and their product is - 500:

=> 100*(-5) = - 500 and 100 - 5 = 95

=> (x^2 + 100)(x^2 - 5)

4) factor x^2 - 5 = (x + √5) (x - √5)

5) write the prime factors: (x^2 + 100) (x + √5) (x -√5)

6) find the solutions:

x^2 + 100 = 0 => not possible

x + √5 = 0 => x = - √5

x - √5 = 0 => x = √5


Answer: x = √5 and x = - √5
4 0
3 years ago
-9 · (-8) =<br> O 72<br> 00<br> o<br> 00<br> O-72
Masja [62]

Answer:

72

Step-by-step explanation:

Hope it helps

6 0
3 years ago
Breyers is a major producer of ice cream and would like to test if the average American consumes more than 17 ounces of ice crea
asambeis [7]

Answer:

The conclusion for this hypothesis test would be that the average American consumes less than or equal to 17 ounces of ice cream per month.

Step-by-step explanation:

We are given that Breyers is a major producer of ice cream and would like to test if the average American consumes more than 17 ounces of ice cream per month.

A random sample of 25 Americans was found to consume an average of 19 ounces of ice cream last month. The standard deviation for this sample was 5 ounces.

<u><em>Let </em></u>\mu<u><em> = average ounces of ice cream consumed by American per month</em></u>

So, Null Hypothesis, H_0 : \mu \leq 17 ounces     {means that the average American consumes less than or equal to 17 ounces of ice cream per month}

Alternate Hypothesis, H_A : \mu > 17 ounces    {means that the average American consumes more than 17 ounces of ice cream per month}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about population standard deviation;

                                 T.S.  = \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample average = 19 ounces

             s = sample standard deviation = 5 ounces

             n = sample of Americans = 25

So, <u><em>test statistics</em></u>  =  \frac{19-17}{\frac{5}{\sqrt{25} } }  ~ t_2_4

                               =  2

The value of the test statistics is 2.

<em>Now at 0.025 significance level, the </em><u><em>t table gives critical value of 2.06 at 24 degree of freedom for right-tailed test</em></u><em>. Since our test statistics is less than the critical values of t, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to </em><u><em>which we fail to reject our null hypothesis</em></u><em>.</em>

Therefore, we conclude that the the average American consumes less than or equal to 17 ounces of ice cream per month.

8 0
4 years ago
3) You have a giant, giant hot tub. The hot tub just so happens to be a perfect cylinder. You cannot fill it
Nikitich [7]

Answer:

Probably 8!

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Karla’s starting salary was $32,000. She gets a 5% raise every year. Does this situation model a linear function?
r-ruslan [8.4K]

Answer:

I believe it does

Step-by-step explanation:

32000 times .05

5 0
3 years ago
Other questions:
  • The length of a photograph is 1 cm less than twice the width. The area is 91cm^2. Find the width and length.
    13·1 answer
  • Which of the following lists is in order from smallest to largest?
    6·2 answers
  • MN and KL are parallel. If JM=9, MK=45, and LN=40, what is NJ?
    9·1 answer
  • In the following figure lines j and k are parallel and are cut by transversal t<br><br> Thanks
    14·1 answer
  • The triangles shown below must be congruent. True or false
    13·2 answers
  • Solving equations 10z+3z+5=2(z-3)
    15·1 answer
  • A bag contains one green ball, one yellow ball, one red ball, and one blue ball. Jerome picks a ball from the bag, replaces it,
    7·1 answer
  • Are these lines perpendicular, parallel, or neither? <br> 5x+3y=3 and 3x+5y=-25
    15·2 answers
  • Solve the following equation for y. -19x +2y = 7​
    9·2 answers
  • y 5 1.055x, where x is the sales price in dollars and y is the price including sales tax, in dollars.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!