Five classmates came to Dan’s birthday party.Thus is as many as the number of friends from his summer camp,and one third as many as the number of his relatives that were there.How many people were at Dan’s birthday party

8. -1.6, -7/8, 0.9, 6/5, 5/2

9. -16/3, -1.3, -2/3, 0.5, 5/9

He can download at most 16 songs to leave $13 for himself to spend.

Use the equation $25-$0.75(x)=$13

The commutative property is illustrated by option D, where adding sprite and orange juice to a punch mixture shows that the order in which the ingredients are mixed does not affect the final product.

The commutative property primarily relates to mathematical operations like addition and multiplication, where changing the order of the numbers does not change the result. For example, in addition, 4 + 5 is the same as 5 + 4. Applying this concept to the options provided, the pair that is an example of the commutative property is adding sprite and orange juice to a punch mixture (Option D). Whether you add sprite to the orange juice or orange juice to the sprite, the resulting punch mixture remains the same.

The answer is 90 I believe

Answer:

60 mph

Step-by-step explanation:

Let distance travelled by both the cars equal to d.

Also assume speed of Car A as x and speed of Car B as y

Then using distance formula,

d = 2x

Similarly for car B, d = 1.5 y

Also given that

speed of car B = speed of car A +15

y =x+15

Hence we have 2 x = 1.5 y  Or x =0.75 y

Substitute in y =x+15 :  y =0.75y+15

0.25y = 15

y = 15/0.25 = 60 mph

Speed of car B = 60 mph

Answer: Consider a power set [tex]\mathbb{R}[/tex] of real numbers.

The subsets of the power set are as follows:-

1. Natural number([tex]\mathbb{N}[/tex])={1,2,3,4,5,....}

2.Whole numbers[tex]\mathbb{W}[/tex]={0,1,2,3,4,......}

3.Integers([tex]\mathbb{I}[/tex])={.......-3,-2,-1,0,1,2,3,....}

4.Rational numbers([tex]\mathbb{Q}[/tex])=It contains all of the above subsets and fractions (where denominator ≠ 0) ,terminating and repeating decimals.

5.Irrational numbers=It contains numbers which cannot be expressed as the ratio of integers, and they are non-repeating, non-terminating decimals.

Solving this system of equations without a CAS: $4=a+c$, $5=d+ac+b$, $4=ad+bc$, $4=bd$ 2

Let $A,B,C,D$ be the vertices of a four sided polygon taken in anti clockwise. Given $|AB|=|BC|=3,|AD|=|CD|=4,|BD|=5$ , Find $|AC|$ 1

Find $ad - bc$ if $ac = 18$ and $bd = 50$ 2

y-intercept is when x = 0  or the b-value when in the form y = mx + b

-10x - [tex]\frac{1}{2}y[/tex] = 5

-10(0) - [tex]\frac{1}{2}y[/tex] = 5

      [tex]\frac{-1}{2}y[/tex] = 5

[tex]-2(\frac{-1}{2}y)[/tex] = -2(5)

 y = -10

Answer: (0, -10)

-10x - [tex]\frac{1}{2}y[/tex] = 5

+10x        +10x  

[tex]\frac{-1}{2}y[/tex] = 10x + 5

[tex]-2(\frac{-1}{2}y)[/tex] = -2(10x + 5)

y = -20x - 10

              b = -10

To cover costs and achieve a $90 profit, each collar should be sold for $175 divided by the number made.

To determine the selling price for each dog collar, we need to consider both the cost of materials and the desired profit.

1. **Calculate total cost**:

  - Cost of materials: $85

  - Desired profit: $90

  Total cost = Cost of materials + Desired profit

             = $85 + $90

             = $175

2. **Determine number of collars**:

  Since you anticipate selling all the collars, the total profit should cover the cost of materials and the desired profit.

3. **Calculate selling price per collar**:

  Divide the total cost by the number of collars to determine the selling price for each collar.

[tex]\[ \text{Selling price per collar} = \frac{\text{Total cost}}{\text{Number of collars}} \][/tex]

Substitute the values:

[tex]\[ \text{Selling price per collar} = \frac{\$175}{\text{Number of collars}} \][/tex]

Without knowing the exact number of collars, we can't determine the exact selling price per collar. However, if you know the number of collars you're making, you can use this formula to find the selling price for each collar.

Given expression: [tex]2\sqrt{3} *(\sqrt{2}+ \sqrt{3})[/tex].

We need to distribute and simplify.

We have 2√3 in front of paranthesis.

We need to distribute 2√3 over paranthesis.

2√3*(√2+√3) would give : 2√3 * √2 + 2√3 * √3.

We need to multiply radical numbers inside radicals and outside number by outside number.

On simplifying, we get

2√6 + 2 * 3 = 2√6 + 6.

Therefore, final answer is 6+2√6.

Answer:

6+2√6

Step-by-step explanation:

D on edg

formula= 2(3.14)r

2(3.14)4.5

2(14.13)

28.26

A flying disc is assumed to be in the shape of a circle. Since we know it is in the shape of a circle, we can use the formula for circumference of a circle.

The formula for circumference of a circle is d * pi, where d represents the diameter of the circle and pi is the representation of 3.14.

You can find the circumference of a circle by multiplying the diameter by pi, and since the question gives us the diameter of the flying disc we can substitute in 9 inches for the diameter to solve for the circumference.

diameter * pi

(9 inches) * ([tex]\pi[/tex]) = 28.2743...

The question wants the final answer to be rounded to the nearest tenth, so rounding 28.2743... to the nearest tenth would make it into 28.27.

The answer to this problem is the circumference of the disc is 28.27 inches.

answer is C 1410.01 mark as brainliest

The question asks how many hours each person worked, and how much they earned, or basically they're asking for the right two columns to be filled in. (Total hours = how many hours each person worked, and Total pay = how much they earned)

If we look at the table, we can see we're given information for each person, Sue, Bob, and Chris. We're given their rate per hour, and the numbers of hour they worked for each day.

The two things we are looking to calculate can correspond with a part of information we're given:

Find the total hours worked for each person:

We have now calculated the total hours for each person. You can therefore fill in the column of total hours, starting from the top, with 37.25 hours, then 32 hours, and finally 30.25 hours.

As I stated earlier, the only thing needed to do to find the total pay is to multiply the total hours my the rate per hour.

It is linear because both variables have an exponent of 1. (FYI: one of the exponents can be 0 and still be a linear equation).

2x + y = 8

-2x     -2x

      y = -2x + 8   ⇒ slope (m) = -2 and y-intercept (b) = 8

plot the y-intercept (0, 8). then plot the next point by counting the rise over run from the y-intercept. count 2 units down and 1 unit to the right = (1, 6).

Answer:

It is linear because both variables have an exponent of 1.

Step-by-step explanation:

If x = -6

Plug in -6 for x

f(x) = 3x + 4

f(-6) = 3(-6) + 4

Remember to follow PEMDAS. First, multiply

3 x -6 = -18

Finally, add

-18 + 4 = -14

f(-6) = -14

f(-6) = -14 is your answer

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~Rise Above the Ordinary, Senpai

Answer:

the answer is x = 9.6

Step-by-step explanation:

Answer:

the answer is

C - X=9.6

Step-by-step explanation:

The occupation staged by American Indians in 1969 was in order to to raise awareness about unfair treatment.

American Indians in 1969:

The reason they did this was to draw attention to the injustices they were subjected to and the unfair treatment of American Indian tribes by the U.S. government. This led to the federal government giving more land to them.

In conclusion, option C is correct.

Find out more about this Native American protests at https://brainly.com/question/1318181.

A costume designer has 36 bat buttons and 18 black cat buttons she must use to create costumes

To find  the largest number of costumes we take GCF

GCF gives the largest and greatest number of grouping

WE find GCF of 36 and 18

1, 2, 3, 6, 9, 18  are the factors of 18

 1, 2, 3, 4, 6, 9, 12, 18, 36 are the factors of 36

Greatest common factor GCF is 18

So , 18  is the largest number of costumes she can make.

43+39=82

hope this helps!

Answer:

43 + 39 = 82

Step-by-step explanation:

amount of mens shoes plus amount of womens shoes

Multiply the rows by the number of chairs 40×22= 880

Brenda is able to complete 2/3 of a friendship bracelet in one hour, based on the rate given in the question.

This question deals with rate and time, key concepts in Mathematics. Brenda can finish 1/3 of a bracelet in 1/2 hour, which means she completes 2/3 of a bracelet in one hour. Let me explain why.

We start with the given rate: 1/3 bracelets per 1/2 hour. To find out how many bracelets Brenda can complete in 1 hour, we simply multiply this rate by 2 (as 1 hour is equivalent to two 1/2 hours). Therefore, Brenda can complete (1/3 bracelet/1/2 hour) x 2 = 2/3 of a bracelet in one hour.

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The attempt to solve the provided system of equations by elimination encountered a misunderstanding in the manipulation of the equations. A straightforward correction highlighted the importance of accurately aligning coefficients before attempting to eliminate a variable, underscoring the necessity of precise calculations in solving such problems.

To solve the given system of equations by elimination, we start with the system:

Our goal is to eliminate one of the variables, either x or y. To do this efficiently, we aim to make the coefficients of either x or y the same or exact opposites. In this case, we can easily adjust the second equation to align the coefficients of y by multiplying the entire equation by a suitable number.

Multiply the first equation by 1 (effectively keeping it the same) and the second equation by 7/4 to align the y coefficients:

However, there seems to be a misunderstanding in the calculation or transcription of the equations provided. Instead, let's correct the approach based on the equations listed in the inquiry.

Looking at the original system provided:

We see an opportunity to simplify the first equation by dividing everything by -7:

Now, to proceed with elimination effectively, aligning coefficients or a straightforward substitution should be re-evaluated, given the error in initial steps noted. Let's correct it:

Notice the instructional error in application; hence, a direct solution via the provided method is not feasible without the correct system alignment or revised equations. When solving similar problems, getting coefficients to align through multiplication or division is key before adding or subtracting equations to eliminate a variable.

Elimination becomes difficult with inaccurate steps, so it's crucial to double-check each phase of your work.

Step-by-step explanation:

This is what I could do please

Answer:

B: 7 x 6 = 42 and the only reason that B is the answer is because a quotient is the word used for a answer when you multiply c:

Step-by-step explanation:

To convert pounds to ounces, you can use the conversion factor of 1 pound = 16 ounces. Therefore, 8.5 pounds of apples equates to 136 ounces. The correct answer is D: 136.

The subject of this question is mathematics. Specifically, it revolves around the concept of units conversion. To convert from pounds to ounces, we use the conversion factor that 1 pound is equivalent to 16 ounces.

Given in the question, the customer bought 8.5 pounds of apples. To find out how many ounces this translates to, we need to multiply 8.5 by 16.

The calculation is as follows:

8.5 pounds * 16 ounces/pound = 136 ounces  

So, the customer bought 136 ounces of apples. Therefore, the correct answer is D: 136.

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Is it   −26−(6)^2? If so

−26−(6)^2

= -26 - 36

= - 62

If   −26−(6)2 (means 6 times 2) then

= -26 - 12

= -38

its D or the 4th answer

x^2 + y^2 - 2x + 8y - 47 = 0

x^2 + y^2 - 2x + 8y = 47

(x^2 - 2x) + (y^2 + 8y) = 47

(x^2 - 2(1)x) + (y^2 + 2(4)y) = 47

(x^2 - 2(1)x + 1^2) + (y^2 + 2(4)y + 4^2) = 47 + 1^2 + 4^2

(x - 1)^2 + (y + 4)^2 = 64 = 8^2

r=8

you add and subtract

Some of the rules of adding and subtracting mixed numbers are:

1) Change the mixed numbers into improper fractions

2) Find common denominators. Remember that what you do to the denominator you also do to the numerator.

3) Subtract

4) Answer

hope this helps