Given a * b=ba−ba+ab, find (2*3)×(3*2).

Answer:

$2.50

Step-by-step explanation:

Let's set up a proportion using the following setup.

price / pens = price / pens

We know that it costs $4.00 for 8 pens.

$4.00 / 8 pens = price / pens

We don't know how much it costs for 5 pens. Therefore, we can say it costs $x for 5 pens.

$4.00 / 8 pens = $x / 5 pens

4/8=x/5

We want to solve for x (the cost for 5 pens). Therefore, we must get x by itself on one side of the equation. x is being divided by 5. The inverse of division is multiplication, so multiply both sides of the equation by 5.

5*(4/8)=(x/5)*5

5*(4/8)=x

5*0.5=x

2.5=x

x= $2.50

Ivan should pay $2.50 for 5 pens.

Answer:

4.00

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer

12.5 percent was bad, 87.5 were good

Step-by-step explanation:

set up this percentage solver\(\frac{1}{8} *\frac{x}{100}\)

then cross multiply

\(8x=100\)

divide by eight

12.5 were bad

so 87.5 were good

Answer:

Option #4

Step-by-step explanation:

Expand option #4

=-3(1-2x)

=-3 -2x*-3

=-3+6x which is what your original equation was.

Answer: 4 blocks

Step-by-step explanation: if the block is 1/5 ft long on each side, the volume is 1/5³

That is 1/5 ×1/5× 1/5

So its volume is 1/125 cubic ft.

It takes 4 to fill 4/125 cu.ft.

5

add all the numbers then divide by 4

20/4 = 5

Answer:

5 bracelets

Step-by-step explanation:

First, we can add the total amount of bracelets together.

4+8+3+5=20

There are 20 bracelets in all. The question asks how many bracelets each girl would get if they were distributed evenly. So, we have to find ow many girls there are.

1) Rayann

2) Jennifer

3) June

4) Tammy

To get the actual answer, we have to divide 20 bracelets by 4 girls.

20/4=5

Each girl should get 5 bracelets if the bracelets are evenly distributed.

I hope this helps!!!!!!!! Good luck on your assignment and have an amazing day :3

Answer: 4 miles are equal to 7040

Step-by-step explanation:

As we know that the ratio can be simplified and the answer can be obtained,

according to the question 5 miles are equal to 8800.

so, here we arrange the ratio in its format as follows

Step 1:

              Miles: Yards

                      5:  8800

Step 2: here we bring the ratio to its simplest form by dividing by 5 on both sides, that is:

5/5=1

8800/5= 1760

Now we get:

                         Miles: Yards

                                 1: 1760

Step 3: now as we need to find the answer for 4 miles we need to multiply with 4 on both sides, that is:

                         Miles: Yards

                                4: 7040

from here we get the answer as 4 milesequalso 7040 yards.

Read more about Velocity,

https://brainly.com/question/2328454

Answer:

81

Step-by-step explanation:

(30)(34)

=1(34)

=(1)(81)

=81

Answer:

To solve the equation -(x + 3) = 2(x - 3) for x, we can follow these steps:

Step 1: Distribute the negative sign on the left side of the equation:

-(x + 3) = 2(x - 3)

=> -x - 3 = 2(x - 3) (using the distributive property)

Step 2: Expand the right side of the equation:

-x - 3 = 2x - 6

Step 3: Add x to both sides of the equation to isolate the x term on one side:

-x + x - 3 = 2x + x - 6

=> -3 = 3x - 6

Step 4: Add 6 to both sides of the equation:

-3 + 6 = 3x - 6 + 6

=> 3 = 3x

Step 5: Divide both sides of the equation by 3 to solve for x:

3/3 = 3x/3

=> 1 = x

So, the correct value of x that makes the equation true is B. 1.

PLEASE MARK BRAILYISTT :D

Answer:

B, one

Step-by-step explanation:

In order to solve this, you can solve the equation. First, you can use the distributive property to get -x-3=2x-6. If you make the variables on one side and the constants on the other, you will get -3x-3=-6. This can further simplify to -3x=-6. Divide both sides by -3 to get that x=1. Then, the correct answer is B.

Answer:

Q1: D

Q2: D

Q3: B

Step-by-step explanation:

Q1: It says it in the question.

Q2: He asked the ones in his science class so they would obviously prefer science, but that is not true for the rest of the students.

Q3: It is random because the first 3 people were chosen regardless of who they were, and it is still a valid sample even if the study is short.

Answer: 430-432 Im assuming it’s counting by two

Step-by-step explanation: i think it is that

Answer:

n = 5

Step-by-step explanation:

1) Use power rule: \((x^a)^b=x^{ab}\).

\(z^{2n}=z^{10}\)

2) Cancel the base of z on both sides.

2n = 10

3)  Divide both sides by 2.

\(n=\frac{10}{2}\)

4) Simplify \(\frac{10}{2}\) to 5.

n = 5

Answer:

25

Step-by-step explanation:

a2  +  b2  =  c2

(7²)  +  (24²)  = c2

c2=25

Answer:

I think the answer is 4. if my math is correct

9² or 9^2

Because the base is the same on the top and the bottom which is "9", you would either add or subtract the top and bottom exponent based on the arithmetic symbol used.

Because the arithmetic symbol division sign is used, you subtract the top exponent by the bottom giving you the answer nine to the power of two.

Answer:

The correct answer is \(9^2\)

Step-by-step explanation:

9 is the base and 7-5=2. so n=2.

Answer:

-9x+3=0

-9x= -3

x= -3/-9

x=1/3

hope it helps you

Explanation: It’s basically like if you had a number x and you want to get it’s reciprocal then you make it into 1/x (You can also put it as x^-1). That’s also the same as saying that you’re going to divide 1 by the number. Raising any quantity of number to the power of -1 is the same as getting its reciprocal. Another way to say of solving to get a numbers reciprocal is the same as multiplicative inverse then it’d be like x/y to y/x (That is taking the reciprocal of a fraction). In the end, taking a reciprocal fraction wise is just switching the numerator and denominator.

I hope this was a good explanation..

Answer: A

Step-by-step explanation:

median: 7+7=14

14/2=7✅

mode: 7 shows up the most (twice)

Answer:

(To simplify the answers, I will refer to the first sentence of the question as part A and the second sentence as part B.)

Question 17

Part A: the square root is between 6 and 7

Part B: the square root is 6.5

Question 18

Part A: the square root is between 9 and 10

Part B: the square root is 9.4

(Extra: the answer in simplified radical form is 2√22)

Question 19

Part A: the square root is between 7 and 8

Part B: the square root is 7.9

(Extra: the answer in simplified radical form is 3√7)

Question 20

Part A: the square root is between 8 and 9

Part B: the square root is 8.7

(Extra: the answer in simplified radical form is 5√3)

Question 21

Part A: the square root is between 5 and 6

Part B: the square root is 5.5

Question 22

Part A: the square root is between 9 and 10.

Part B: the square root is 9.8

Step-by-step explanation:

First of all, it says you can use a calculator! If you do not know how to, let me know in the comments and I can try to help you out! Read the explanation to understand how to do this.

Question 17

Using a calculator, you get 6.48074069… for your decimal.

Rounding it to the nearest tenth, your answer would be 6.5

Now, to find the two consecutive whole numbers the square root is between…

However, there is another way to do this. Remember that 7x7=49. We know that 49 is greater than 42, so let’s see try out a number smaller than 7! 6x6=36. 42 is between 36 and 49, so the square root is between 6 and 7.

Another way to do this is… we know that the decimal is about 6.5, which is between 6 and 7, since those are the two whole numbers before and after that decimal!

Question 18

Using a calculator, you get 9.380833151… for your decimal.

This rounds to 9.4

The whole numbers surrounding this decimal are 9 and 10.

You can also do this by knowing that 9x9, or 9^2, is 81 and 10x10, or 10^2, is 100, and those are the numbers surround 88.

In non-decimal form (simplified radical), your answer can be 2√22.

Question 19

Using a calculator, you get 7.93725393… for your decimal.

This rounds to 7.9

The whole numbers surrounding this decimal are 7 and 8.

You can also do this by knowing that 7x7, or 7^2, is 49 and 8x8, or 8^2, is 64, and those are the numbers surround 63.

In non-decimal form (simplified radical), your answer can be 3√7.

Question 20

Using a calculator, you get 8.66025403… for your decimal.

This rounds to 8.7

The whole numbers surrounding this decimal are 8 and 9.

You can also do this by knowing that 8x8, or 8^2, is 64 and 9x9, or 9^2, is 81, and those are the numbers surround 75.

In non-decimal form (simplified radical), your answer can be 5√3.

Question 21

Using a calculator, you get 5.47722557… for your decimal.

This rounds to 5.5

The whole numbers surrounding this decimal are 5 and 6.

You can also do this by knowing that 5x5, or 5^2, is 25 and 6x6, or 6^2, is 36, and those are the numbers surround 30.

Question 22

Using a calculator, you get 9.84885780… for your decimal.

This rounds to 9.8

The whole numbers surrounding this decimal are 9 and 10.

You can also do this by knowing that 9x9, or 9^2, is 81 and 10x10, or 10^2, is 100, and those are the numbers surround 97.

Note: the symbol "^" means that the number following that symbol is an exponent. So 2^2 is 2 squared, \(2^2\), or 2 to the power of 2.

Hope that helps! <3

Disclaimer: I am not responsible for anything you get incorrect, as I only have the context and information you provide, and I give my response based on my knowledge supported with credible information from experts and online professional articles.

Answer:

-9

Step-by-step explanation:

To answer this question, you have to know how to translate what is asked in words into equation form.

The word difference means subtractions. For example, the difference of 8 and 3 is 5. In equation form, this means " 8 - 3 = 5 "

To say "twice a number" means to have a number twice, which is multiplication. Since we don't know what the number is, we will call it x.

So to put the proposed question in equation form, we would say "2x - 3 = -21"

Now that we've got the equation, we can now solve for x. To do this, we group the like terms first. In this case it's -3 and -21. The easiest method would be to move the -3 to the other side of the equals sign, but in order to do this we have to change the sign of the -3. So your equation now looks like this

2x = -21 + 3

At this point, we add -21 and positive 3, which equals -18, so now we have

2x = -18

Now, in order to get x by itself, we need to look at the main operation on the left side of the equation. The main operation is multiplication because "2x" really means "2 multiplied by x". So in order to get x by itself, we need to move 2 over to the other side of the equation. Since division is the opposite of multiplication, we divide both sides by 2. If we divide the left side by 2, we are left with x by itself because 2 divided by 2 =1, meaning we have 1x, or simply put, just "x".

However on the other side of the equation, we divide that as well by 2. So -18 divided by 2 is -9

The answer is x = -9

Answer:

2 miles

Step-by-step explanation:

Step-by-step explanation:

I hope it's helpful for you..

Answer:

4/30

Step-by-step explanation:

So first of all you want to convert both fractions so that they have a common denominator (30)

-1/6= -5/30

3/10=9/30

Next, you want to picture a number line in your head. Now picture -5/30 on the number line, and move 9/30 steps. Bringing you to 4/30.

How I did that:

9-5 (negative amount)=4 (amount you have after getting rid of the 5 steps that took you to 0)

Answer: 420

Step-by-step explanation:

The function for the points are  y = -15x - 5

From the information given, we have that;

The points are;

(1/3,0) (-2 3/4,0) and (0,-5)

Using the point-slope form of a linear equation, we have;

y - y₁ = m(x - x₁)

Such that;

Using (1/3, 0) and (0, -5), we have that the slope is;

m = (0 - (-5))/0 -1/3)

expand the bracket

= 5 / (-1/3)

= -15

Now, take any of the given points and substitute the values

Using (1/3, 0), we get;

y - 0 = -15(x - 1/3).

y = -15x - 5.

Learn more about functions at: https://brainly.com/question/25638609

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The function for the points solved by  (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)

We have given the points:

(1/3,0) (-2 3/4,0) and (0,-5)

Using the formula of linear equation

\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)                                                          

Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)

that is 1/3 = \(a\), 0 = \(a_{1}\) and

0 = \(b\), -5 = \(b_{1}\)

\(x\) refers to the slope of line (take any variable)

Now for finding the value of \(x\),

\(x=a-a_{1}/b-b_{1}\)

inserting the values,

\(x=[0-[-5]]/[0-1/3]\\x= -15\)

Substitute the value of \(x\) in the equation

\(a-0=-15[b-1/3]\)

By simplifying the equation, we get

\(a=-15b-5\)

To know more about functions and points:

https://brainly.com/question/30721594