The following equation is an example of which property?
-9.97 + (4.68 + 13.08)= (-9.97 + 4.68) + (13.08)
O Commutative Property of Addition
O Commutative Property of Multiplication
O Associative Property of Addition
O Associative Property of Multiplication

Answers

Answer 1

The algebra property used on -9.97 + (4.68 + 13.08)= (-9.97 + 4.68) + (13.08) is; Associative property of addition.

How to identify the Algebraic Property?

We are given the number expression;

-9.97 + (4.68 + 13.08) = (-9.97 + 4.68) + (13.08)

There are different algebraic properties such as Associative Property, Commutative Property, distributive property, e.t.c

Now, Associative property of addition states that changing the grouping of addends does not change the sum.

For example, (4 + 5) + 6 = 4 + (5 + 6)

Similarly; (7 + 8) + 9= 7 + (8 + 9)

Looking at our question, we see that the only thing that was changed is the grouping of addends and it did not change the sum. This, we conclude that algebra property used is Associative property of addition.

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Related Questions

Using your answer(s) for question 3, were there any extraneous answers, and how did you check?

Question 3 was:
(Solve |2(x-5)|+11=17​)
The answer is x = 8 and x = 2

Answers

Answer:

x = 8 and x = 2 are both valid solutions.

There are no extraneous answers.

Step-by-step explanation:

Given absolute value function:

[tex]|2(x-5)|+11=17[/tex]

To solve an equation containing an absolute value, isolate the absolute value on one side of the equation:

[tex]\implies |2(x-5)|+11=17[/tex]

[tex]\implies |2(x-5)|+11-11=17-11[/tex]

[tex]\implies |2(x-5)|=6[/tex]

Set the contents of the absolute value equal to both the positive and negative value of the number on the other side of the equation, then solve both equations.

Equation 1 (positive)

[tex]\implies 2(x-5)=6[/tex]

[tex]\implies \dfrac{2(x-5)}{2}=\dfrac{6}{2}[/tex]

[tex]\implies x-5=3[/tex]

[tex]\implies x-5+5=3+5[/tex]

[tex]\implies x=8[/tex]

Equation 2 (negative)

[tex]\implies 2(x-5)=-6[/tex]

[tex]\implies \dfrac{2(x-5)}{2}=\dfrac{-6}{2}[/tex]

[tex]\implies x-5=-3[/tex]

[tex]\implies x-5+5=-3+5[/tex]

[tex]\implies x=2[/tex]

Therefore, the solutions are x = 8 and x = 2.

Check if the solutions are valid by substituting them into the original equation:

[tex]\begin{aligned}x=8 \implies |2(8-5)|+11 & =17\\|2(3)|+11 & =17\\|6|+11 & =17\\6+11 & =17\\ 17 & = 17\end{aligned}[/tex]

[tex]\begin{aligned}x=2 \implies |2(2-5)|+11 & =17\\|2(-3)|+11 & =17\\|-6|+11 & =17\\6+11 & =17\\ 17 & = 17\end{aligned}[/tex]

Therefore, both solutions are valid and there are no extraneous answers.

Note:  An extraneous solution is a solution that is produced by solving the problem, but is not a valid solution to the problem.

62+41+(2)+(4) what is the answer to this

Answers

Answer:

109.

Step-by-step explanation:

62+41+(2)+(4)       we can remove the brackets:

= 62 + 41 + 2 + 4

= 109.

Which inequality is represented by the number line?

Answers

The inequality represented by the given number line is; -4 ≥ x ≥ 5

How to Interpret Inequality Number Line?

From the given number line we can find the inequality. Some of the rules are that;

For a shaded circle pointing to the left means less than or equal to (≤)

For a shaded circle pointing to the right means greater than or equal to (≥).

For an unshaded circle pointing to the left means less than (<)

For a shaded circle pointing to the right means greater than (>)

Thus, applying the above to the inequality line gives;

-4 ≥ x ≥ 5

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**HELP*
-5 - 2

6 - (-5)

Answers

The solutions of the expression are;

a. - 5 - 2 = -7

b. 6 - (-5) = 11

What is Addition?

A process of combining two or more numbers are called Addition.

The given expression are;

a. -5 - 2

b. 6 - (-5)

Now, Solve the expression as;

-5 - 2 = - 7

And, 6 - (-5) = 6 + 5 = 11

So, The solutions of the expression are;

- 5 - 2 = -7

6 - (-5) = 11

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The area of a room is 32m^2 . What is the area of the room in mm^2?​

Answers

Answer:

Steps below.

Step-by-step explanation:

Unit Conversion is definitely needed in this question. Therefote, we will do some conversions first.

[tex]1m = 1000 mm \\ 1 {m}^{2} = {(1000)}^{2} {mm}^{2} \\ 1 {m}^{2} = 1000000 {mm}^{2} [/tex]

Now we can use the above converted unit to solve for the question.

[tex]32 {m}^{2} = 32 \times 1000000 \\ = 32000000 {mm}^{2} [/tex]

Accrotime is a company that manufactures quartzcrystal watches. Accrotime researchers have shown that the watches have an average life of 28 months before certain electronic componentsdeteriorate, causing the watch to become unreliable. The standard deviation of watch lifetimes is 5 months, and the distribution of lifetimes is normal.






if Acro time does not want to make refunds for more than 12% of the watches it makes how long should the guarantee period be to the nearest month

if acro time guarantees a full refund on any defective watch for two years after purchase what percentage of total production should the company expect to replace ​

Answers

The guarantee period of the electronic components by Accrotime manufactures is 38 months.

What is defined as the normal distribution?A normal distribution is a data set arrangement in which the majority of values cluster inside the middle of the range and the remainder trimmed off symmetrically toward any extreme.It happens whenever a normal random variable does have a mean of zero and a standard deviation of one.

mean = μ = 24 months

standard deviation = σ = 5 months

2 years = 24 months

a) P(x < 24)

= P[(x - μ ) / σ < (24 - 28) / 5]

= P[(x - μ ) / σ < -0.8

= P(z < -0.8 )

Using z table,

= 0.212

Percentage = 21.2%

b) Use standard normal table,

Refund percentage = 12%

P(Z > z) = 12%

= 1 - P(Z < z) = 0.12

= P(Z < z) = 1 - 0.12

= P(Z < z ) = 0.88

= P(Z < 0.174 ) = 0.94  

z = 0.174

Using z-score formula,

x = z ×σ  + μ

x = 1.74 × 5 + 28

x = 36.7

The guarantee period = 38 month

Thus, the guarantee period of the electronic components by Accrotime manufactures is 38 months.

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Easy points !! WILL GIVE BRAINLIST TO BEST ANSWER A
VIEW PHOTO

Answers

Answer:

6

Step-by-step explanation:

Terms are what is separated by addition and subtraction.

Write and solve a logarithmic equation.

Answers

The value of logarithmic equation log₂ (x+3) + lox₂ (3) = log₂(27) which is taken as an example is x = 6.

How to solve a logarithmic equation?

Step 1: Isolate a logarithmic expression (with the same base) on both sides of the equation using exponentiation rules.

Step 2: equalize the arguments.

Step 3: Solve the resultant equation.

Step 4: Verify your responses.

Let us consider an example -

log₂ (x+3) + lox₂ (3) = log₂(27)

using logₐ(m.n) = logₐ(m) + logₐ(n)

log₂(3(x+3)) = log₂(27)

log₂(3x + 9) = log₂(27)

3x+9 = 27

x = 27 - 9 / 3

x = 6

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plsss helppppp i rlly need this

Answers

The answer is 0.0000068 m

This is because when you have a 10 to the negative exponent, move the decimal place of 6.8 to the left 6 times.

Hope this helps!!!

Henry has a total of 39 cards to play a game.
Every player must get 8 cards.
How many players can play this game?

Answers

Answer:  4 players can play and still have 8 cards each.

39÷8=4.875

Answer:

4 people

Step-by-step explanation:

39 cards / 8 cards = 4.87500

each person must have 8 cards, so only 4 people can play

What is the equation of a line perpendicular to y=1/4x-3 that passes through point (-2,4)?

Answers

Step-by-step explanation:

To find a line perpendicular to one another and passing through the point we take the slope of the original line and apply its reciprocal in point slope form.

Reciprocal of [tex]\frac{1}{4}[/tex] is [tex]\frac{-4}{1}=-4[/tex]

Now plug the slope into point-slope form with the known x and y values:

[tex]x-(-2)=-4(y-4)\\x+2=-4(y-4)\\x+2=-4y+16\\x+2+4y=16\\4y=16-x-2\\y=4-\frac{x}{4}-\frac{2}{4}\\y=3.5-\frac{x}{4}[/tex]

Ian has a loyalty card good for a discount at his local grocery store. The item he wants
to buy is priced at $34, before discount and tax. After the discount, and before tax,
the price is $30.60. Find the percent discount.

Answers

Ian got a discount of 3.4 and percent discount is 10% after buying the items he wants in the local grocery store

How to find the percent discount

Given data

price before tax and discount = $34

price after discount = $30.60

solving for discount

$34  -  $30.60 =  $3.4

percent discount

= 3.4 / 34 * 100 / 1

= 0.1 * 100

= 10%

Therefore we can say that Ian got a discount of 3.4 and percent discount is 10% after buying the items he wants in the local grocery store

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from a window 35 meters high, the angle of depression to the top of a nearby streetlight is 55.. the angle of depression to the base of the streelight is 57.8. how tall is the streelight/?

Answers

The height of the street light is approx. 3.5m.

Angle of depression is defined as the angle formed between the horizontal line and the line of sight when the observer looks down .

In the given question  

let h be the height of the street light

let d be the distance from the base of building to the street light .

form the figure given below.

In ΔADE

[tex]tan(57.8)=\frac{AD}{DE}[/tex]

Substituting the value of AD and DE from the figure

[tex]tan (57.8)=\frac{35}{d} \\ \\ d=\frac{35}{tan(57.8)} \\ \\ d=\frac{35}{1.5879}[/tex]....substituting the value of tan (57.8)

d=22.04 m      ...(i)

In ΔABC

[tex]tan(55)=\frac{AB}{BC}[/tex]

Substituting the value of AB and BC from the figure

since AD=AB+BD

35=AB+h

AB=35-h

[tex]tan (55)=\frac{35-h}{d}[/tex]

Substituting the value of d from (i)

[tex]tan (55)=\frac{35-h}{22.04}\\ \\ 35-h=tan(55)*22.04\\ \\ 35-h=1.428*22.04[/tex]( substituting the value of tan(55)  )

[tex]35-h=31.47[/tex]

[tex]h=35-31.47\\h=3.53\\[/tex]

h≅3.5

Therefore , the height of the streetlight is approx. 3.5m  .

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Help me pls with this question I will give you points,

Answers

Answer:

64

Step-by-step explanation:

Angles DBF and EBF form a linear pair, so:

[tex]5x+6+3x-2=180 \\ \\ 8x+4=180 \\ \\ 8x=176 \\ \\ x=22 \\ \\ \implies m\angle DBF=116^{\circ}[/tex]

Similarly, because angles DBF and DBC form a linear pair, the answer is 64°.

Simplify y to the negative eighth power over x to the negative fifth power.

pls pls help!!

Answers

Answer:

[tex] \dfrac{x^{5}}{y^{8}} [/tex]

Step-by-step explanation:

[tex] \dfrac{y^{-8}}{x^{-5}} = [/tex]

[tex] = \dfrac{x^{5}}{y^{8}} [/tex]

The expression is simplified to give y⁻⁸x⁵

How to simply the index forms

First, it is important to note that index forms are described as mathematical forms that are used to represent numbers of variables that are too large or that are too small in more convenient forms.

These index forms are also known as scientific notations or standard forms

From the information given, we have that;

y to the negative eighth power over x to the negative fifth power

This is represented as;

y⁻⁸/x⁻⁵

Since the forms are not of the same bases, we cannot add the exponents

y⁻⁸x⁵

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Sep 14, 8:22:40 AM
A bakery sold 26 vanilla cupcakes in a day, which was 13% of the total number of
cupcakes sold that day. How many total cupcakes did the bakery sell that day?

Answers

The total number of cupcakes sold by the bakery on that day were 200.

Here, we are given that a bakery sold 26 vanilla cupcakes in a day.

This was 13% of the total number of cupcakes sold that day.

Let the total number of cupcakes sold that day be x

Then 13% of x is given to be 26. Mathematically this can be represented as-

(13/100)x = 26

solving the equation to find the value of x, we get-

x = 26 × 100/ 13

x = 26/13 × 100

x = 2 × 100

x = 200

Thus, the total number of cupcakes sold by the bakery on that day were 200.

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• For software that really has a virus, the test says "Yes" 97% of the time
• For software that is really virus-free, the test says "Yes" 2% of the time ("false
positive")
If 1% of all software has a virus and the virus test for a randomly selected software says
"Yes", what are the chances that the software really has a virus?

Answers

There is 0.329 probability or chance that the software really has a virus.

The calculation will be based on Bayes' theorem which relates the probability and statistics, as is mentioned in the given question. The values provided are True positive = 97%, False positive = 2% and Prevalence = 1%.

Probability = (True positive × user) ÷ (True positive × user) + (false positive × non user)

Keep the values in formula to find the probability

Probability = (0.97 × 0.01) ÷ (0.97 × 0.01) + (0.02 × 0.99)

Probability = 0.0097 ÷ (0.0097 + 0.0198)

Probability = 0.0097 ÷ 0.0295

Probability = 0.329

Thus, there is 0.329 chance that the software really has a virus.

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What is the measure of the missing angle? show your work.

Answers

The measure of the missing angle is 112°.

Sum of Interior Angle

When you need to find some interior angle of polygons, you can apply the  formula for the sum of interior angle. This formula relate the number of sides of the polygon with the sum of interior angle. The formula is presented below.

S = (n – 2 )*180º, where:

S= sum of interior angles

n= number of sides of the given polygon

The given figure shows:

a polygon with 5 sides ;the angles of polygon are: 105°,118°,75°, 130° and x°.

Applying the formula, S = (n – 2 )*180º, you find:

S=(5-2) * 180

S=3*180

S=540°

Now  that you know the sum of the interior angles for the given polygon, thus:

x+105+118+75+130=540

x+428=540

x=540-428

x=112°

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Please help! I will mark brainliest! :)

Answers

Answer:

The measure of angle 3 is 30 (C).

Step-by-step explanation:

m<1, m<2, and m<3 have a sum of 180        Linear Pair Postulate

So 2x + 3x - 20 + x - 4 = 180

6x - 24 = 180

6x = 204

x = 34

Then you substitute and get 34 - 4 for angle 3 which = 4

Hope this helps!

b. For what interval(s) is the function negative

Answers

Answer:

The negative regions of a function are those intervals where the function is below the x-axis. It is where the y-values are negative (not zero).

Step-by-step explanation:

The negative regions of a function are those intervals where the function is below the x-axis. It is where the y-values are negative (not zero).

How is graphing a two-variable inequality similar to graphing a one-variable inequality on the number line? HURRY PLEASE

Answers

Answer: “The graph of an inequality in two variables is the set of points that represents all solutions to the inequality. A linear inequality divides the coordinate plane into two halves by a boundary line where one half represents the solutions of the inequality. The boundary line is dashed for > and < and solid for ≤ and ≥.”


      - https://www.mathplanet.com

Step-by-step explanation:

||
Evaluating a formula
Use the equation below to find T, if w=72, m=8, and a = 2.
T=w-ma

Answers

Answer: its 56

Step-by-step explanation:

plug #'s in

t=72-8x2

t=56

S
R
Q
Name the vertex of the angle.

Answers

The vertex (the common end point for the two rays) in the angle SRQ is the point R as it is in the middle and common.

The angle is SRQ with sides SR and RQ. The common point is R.

A vertex of an angle is the endpoint where two line or rays come together. The vertex of an angle is the point where two rays begin or meet, where two line segments join or meet, where two lines intersect (cross), or any appropriate combination of rays, segments and lines that result in two straight "sides" meeting at one place.

Here two sides are SR and RQ the end point to both the sides is common which is R. So the vertex to the angle SRQ is R.

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For her birthday, Carrie has asked her family to donate money to the World Nature Fund. Five of her family members donated $15 each to the cause. Carrie also emptied $21.27 from her piggy bank and donated it all. How much has Carrie and her family donated in all? Video​

Answers

Answer: $96.27

Step-by-step explanation: 15x5=75, 75+21.27=96.27

Answer: $96.27

Step-by-step explanation:

If five of Carries' family members donated $15 we would have 15x5.

15+15+15+15+15=$75.

Carrie, herself, donated $21.27.

$75+$21.27

75+21=96

Add the .27 to 96.

Answer= $96.27 in total

what is the domain and range of this ?? HELP PLS

Answers

Domain:3,6,26
Range:5,23
The domain is all of your x-values and the range is all of your y-values.

help please

Which expression is equivalent to −3(b − 7)?

−3b − 21
−3b + 21
−3b − 7
3b + 7

Answers

-3b+21 is the correct answer like my comment if I’m right

Answer:

- 3b + 21

Step-by-step explanation:

- 3(b - 7) ← multiply each term in the parenthesis by - 3

= - 3b + 21

i need help really quick..

Answers

Answer: i feel like all of them but dont go by my word

Step-by-step explanation:

SOMEONE PLEASE HELP ME

Answers

Answer:

A) "If q, then p."

B) "If not p, then (not) q."

C) "If (not) q, then not p."

x less than or equal to 25

Answers

Answer:

[tex]x\leq 25[/tex]

Step-by-step explanation:

Since x can equal anything 25 and lower, here are some of the possibilities x can be.

x = 25, 24, 23, 22, 21, 20, etc.

X could also be a decimal and doesn't have to be an integer.

x = 24.7, -20.4, 24 5/7

So to put these numbers in one equation, we can use the [tex]\leq[/tex] symbol.

Therefore, [tex]x\leq 25[/tex].

Hope this helped! Have a great day!

If José's present age is 3 n, how old will he be in 5 years?

Answers

Answer:

3n+5

Step-by-step explanation:

you don’t know the official age, all you know is that his age is 3 times whatever number

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