Joe practiced his trumpet 3/4 hour on Monday and 7/12 hour on Tuesday. How long did he practice altogether?

2 hours
1 1/3 hours
2 2/3 hours
5 1/3 hours

Answer:

12x³ - 7x² + 11x + 14

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

3x(4x² - 5x + 7) + 2(4x² - 5x + 7) ← distribute both parenthesis

= 12x³ - 15x² + 21x + 8x² - 10x + 14 ← collect like terms

= 12x³ - 7x² + 11x + 14

Answer: -9x + 24

Step-by-step explanation:

To do this, we need to multiply each term by -3

So -3(3x -8) turns into

-9x + 24

That’s the answer!

Answer: 1.05 ·10⁴ mosquitoes

Step-by-step explanation:

1,000mosquitoes/hour x 10.5hours =10,500 mosquitoes

Now you have to move decimal point as many space as needed left so that the number is less than ten.

10,500 ↪ 1.0500 because I moved decimal point 4 spaces, its 10⁴

Answer: 1.05 ·10⁴ mosquitoes

[tex]\textit{\textbf{Spymore}}[/tex]​​​​​​

Answer:

d=-8

Step-by-step explanation:

1) Use the Distributive property on the left side of the equation:

3d-24-5=9(d+2)+1

2) Use the Distributive property on the right side of the equation:

3d-24-5=9d+18+1

3) Combine alike terms:

3d-29=9d+19

4) add a 29 to both sides:

3d=9d+48

5) Subtract a 9d from both sides:

-6d=48

6) Divide both sides by -6:

d=-8

#3 is 40 degrees Clockwise.

Answer:

b = c(pq - a)

Step-by-step explanation:

All we need to do is isolate (solve for) the variable b

a + b/c = pq

Subtract a from both sides

b/c = pq - a

Multiply by c on both sides

b = c(pq - a)

Answer:

b = c(pq - a)

Step-by-step explanation:

Carl travelled 840 km by bus and 1060 km by airplane.

To solve this problem, we can use the formula:

Distance = Speed x Time

Let x be the distance travelled by bus. Since the distance travelled by airplane is 1900 km - x, we can set up the equation:

x/60 + (1900 - x)/100 = 7

Solving for x, we get x = 840 km. Therefore, Carl travelled 840 km by bus and 1060 km by airplane.

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Carl traveled 420 km by bus and 1480 km by airplane.

To solve this problem, we need to use the formula:

Distance = Speed x Time

We know that the total traveling time was 7 hours, and the distances traveled by bus and airplane add up to 1900 kilometers. Let's use the formula to find the distance traveled by bus:

Distance by bus = Speed by bus x Time by bus

Since we know the average speed by bus is 60 km/h, we can substitute into the equation:

Distance by bus = 60 km/h x Time by bus

By rearranging the equation, we can solve for Time by bus:

Time by bus = Distance by bus / Speed by bus

And since the total traveling time was 7 hours, we can substitute this value into the equation:

7 hours = Distance by bus / 60 km/h

Multiplying both sides of the equation by 60 km/h, we get:

7 hours x 60 km/h = Distance by bus

Distance by bus = 420 km

Now that we know the distance traveled by bus, we can find the distance traveled by airplane:

Distance traveled by airplane = Total distance - Distance by bus

Substituting the given values, we get:

Distance traveled by airplane = 1900 km - 420 km

Distance traveled by airplane = 1480 km

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Answer:

4

Step-by-step explanation:

First off, integers are Whole Numbers (1,2,3,4, etc), so we are rounding the answer to the nearest whole number.

The square root of lets just say 25 means you are finding a number that multiplied by itself will equal 25 (the answer is 5).

Now for 13, there is no perfect square, however the closest whole number that multiplied by itself to 13 is 4.

4*4= 16

3*3=9

5*5=25

As you can see above 4 is the closest number to 13.

Now, the ACTUAL value of the square root of 13 is 3.60555128, but we are rounding up to the nearest whole number which is 4 :)

The square root of 13 is approximately 3.6055, but to the nearest integer (whole number), it's 4.

The question asks for the square root of 13. First, it's important to understand what a square root is. In simple terms, the square root of a number is a value that, when multiplied by itself, gives the original number. So, if you take the square root of 16, for example, it's 4 because 4 multiplied by 4 equals to 16. Now, 13 is not a perfect square, so its square root is not a whole number. If you calculate the square root of 13, you'll get an answer somewhere around 3.6055. However, the question asks for the nearest integer. An integer is a whole number, so we're looking for the whole number closest to 3.6055. In this case, it's 4. So, the square root of 13, to the nearest integer, is 4.

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Answer:

26.307 miles per gallon

Step-by-step explanation:

Divide the miles traveled by the number of gallons used.

In this case, divide 342 by 13 to get the answer of 26.307 miles per gallon.

Answer:

Diego is 14 years old.

Sister is 19

Step-by-step explanation:

x = Diego's age

x + 24

2x-9 = 2

First to get rid of the fraction we multiply each side by 2

2(2x-9) = 2((x+24)/2)

4x-18 = x+24

The we isolate x

4x-18 = x+24

-x+18 -x+18

3x = 42 Now we divide each side 3

3 3

x = 14

So Diego is 14

Now we can solve for his sister. We can use one of the two equations from earlier to do this.

Plug 14 in for x and then solve for his sister

2(14)-9

28-9

19

His sister is 19

Answer:

Diego's age is 14 years.

His sister's age is 19 years.

Step-by-step explanation:

Let d represent Diego's age.

We have been given that Diego's sister is twice his age minus 9 years.

The age of Diego's sister would be [tex]2x-9[/tex].  

We are also told that she is also as old as half the sum of the ages of Diego and both of his 12-year-old twin brothers. We can represent this information in an equation as:          

[tex]2x-9=\frac{x+12+12}{2}[/tex]

Let us solve for x:

[tex]2x-9+9=\frac{x+24}{2}+9[/tex]

[tex]2x=\frac{x+24}{2}+\frac{2*9}{2}[/tex]

[tex]2x=\frac{x+24}{2}+\frac{18}{2}[/tex]

[tex]2x=\frac{x+24+18}{2}[/tex]

[tex]2x=\frac{x+42}{2}[/tex]

[tex]2*2x=\frac{x+42}{2}*2[/tex]

[tex]4x=x+42[/tex]

[tex]4x-x=x-x+42[/tex]

[tex]3x=42[/tex]

[tex]\frac{3x}{3}=\frac{42}{3}[/tex]

[tex]x=14[/tex]

Therefore, Diego's age is 14 years.

[tex]\text{His sister's age}=2x-9[/tex]

[tex]\text{His sister's age}=2(14)-9[/tex]

[tex]\text{His sister's age}=28-9[/tex]

[tex]\text{His sister's age}=19[/tex]

Therefore, his sister's age is 19 years.

Answer:

[tex]\sqrt{2}[/tex] ≈ 1.414

Step-by-step explanation:

Calculate the distance d using the distance firmula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 5, 0) and (x₂, y₂ ) = (- 4, 1)

d = [tex]\sqrt{(-4+5)^2+(1-0)^2}[/tex]

  = [tex]\sqrt{1^2+1^2}[/tex]

  = [tex]\sqrt{2}[/tex] ≈ 1.414 ( to 3 dec. places )

The two expressions should be [tex]-4 \div 2 + 8 = 6\ and\ (10 \times -3) \div -5 = 6[/tex].

Given that,

Based on the above information, the calculation is as follows:

[tex]-4 \div 2 + 8 = 6\[/tex]

6 = 6

And,

[tex](10 \times -3) \div -5 = 6[/tex]

6 = 6

Therefore we can conclude that the two expressions should be [tex]-4 \div 2 + 8 = 6\ and\ (10 \times -3) \div -5 = 6[/tex].

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Two expressions using the given numbers that equal 6 are: Expression 1: 10 - 2 - (-3) + (-5) and Expression 2: 10 - 2 + 8 - (-4) - 5. The calculations are done using the order of operations (PEMDAS).

The task is to create two mathematical expressions using the numbers -4, 10, 8, 2, -3, and -5, which result in 6. We can accomplish this by utilizing basic arithmetic operations such as addition, subtraction, multiplication, or division. The important thing is making sure all operations adhere to the Order of Operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction). Here are the two ways you could form expressions:

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Answer:

The answer is 36

Step-by-step explanation:

we know 42 students arrived after the dance started and 78 arrived in total. You have to subtract 42 from 78. how I remember this: part+part=whole whole-part=part

Answer:

The required solution is: [tex]x<\frac{23}{8}[/tex] or x<2.875 or [tex]\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\frac{23}{8}\right)\end{bmatrix}[/tex]

Step-by-step explanation:

Consider the provided inequity.

[tex]24x>18(4x-6)-30[/tex]

We need to solve the above inequity of x.

Open the parentheses.

[tex]24x>18\times 4x-18\times 6-30[/tex]

[tex]24x>72x-108-30[/tex]

[tex]24x>72x-138[/tex]

Subtract 72x from both sides.

[tex]24x-72x>72x-138-72x\\-48x>-138[/tex]

Multiply both sides by -1 and reverse the inequality.

[tex]\left(-48x\right)\left(-1\right)<\left(-138\right)\left(-1\right)[/tex]

[tex]48x<138[/tex]

Divide both side by 48.

[tex]x<\frac{23}{8}[/tex]

Hence, the required solution is: [tex]x<\frac{23}{8}[/tex] or x<2.875 or [tex]\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\frac{23}{8}\right)\end{bmatrix}[/tex]

Answer:

9/10

Step-by-step explanation:

You find the lowest common denominator which is 56 and then, you multiply each numerator by the opposite denominator (3 times 7 and 3 times 8) after that you should get 5 45/50 then you simplify it to get 9/10

The mean of the given data set, after removing the outlier, is 49.

To determine the mean of a data set, outliers (extremely high or low values) must first be identified and removed. Looking at the given data set: 42, 43, 46, 48, 57, 60, 96, 59, 38, 68, 29; the number 96 is an outlier as it is remarkably higher than the other values.

After removing the outlier, the rest of the data set becomes: 42, 43, 46, 48, 57, 60, 59, 38, 68, 29.

To find the mean (average), sum all these numbers and divide by the count of numbers. The total sum of these numbers is 490, and there are 10 numbers. Therefore, the mean is 49 (490 divided by 10).

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The mean of the data set after removing the outliers is c. 49

From the question, we have the following parameters that can be used in our computation:

The data set

Where, we have

42, 43, 46, 48, 57, 60, 96, 59, 38, 68, 29

The outlier in the data set is 96

If we remove them, we will have the following data set:

42, 43, 46, 48, 57, 60, 59, 38, 68 and 29

The mean of this data set is calculated as follows:

mean = (42 + 43 + 46 + 48 + 57 + 60 + 59 + 38 + 68 + 29) / 10 = 49

Hence, the mean without outliers is 49

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Final answer:

A terminating decimal has a finite number of decimal places, whereas a repeating decimal has one or more digits that repeat infinitely. Trailing zeros in a decimal number are significant when they come after a decimal point, affecting precision in arithmetic operations.

Explanation:

The difference between a terminating decimal and a repeating decimal lies in their decimal expansions. A terminating decimal has a finite number of decimal places; once you write out all the decimal places, the number ends. For example, 0.5 or 0.75 are terminating decimals because they stop after one or two decimal places, respectively. On the other hand, a repeating decimal has one or more digits that repeat infinitely. For instance, 0.333... (where the 3s go on forever) is a repeating decimal. The bar above the digit(s) indicates that it repeats indefinitely.

In the context of significant figures and rounding, trailing zeros in a decimal number are significant when a decimal point is present. This precision is important in arithmetic operations. When rounding off in addition or subtraction, the number of decimal places in the result should match the number in the expression with the fewest decimal places. The same concept of precision applies to multiplication and division, where the number of significant figures must align with the term having the least amount of them.

Answer:

See below.

Step-by-step explanation:

I can't see any example but what I would do is first multiply both sides by 3.

4m/3 = 8

4m/3 * 3 = 8 * 3

4m = 24.

The first operation in solving the equation 4m/3 = 8 is multiplying both sides of the equation by 3, which eliminates the fraction and isolates the variable 'm'. After further simplification, the solution to the equation is m = 6.

To solve the equation 4m/3 = 8, the first operation we need to perform is to isolate the variable on one side of the equation. We can do this by multiplying both sides of the equation by 3. This cancels out the fraction on the left side, allowing us to solve for 'm'.

In step by step:

So, "the solution to the equation is m = 6".

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The exact answer is 4√2 + 4

The decimal answer is 9.6568 ( round the answer as needed.)

See the attached picture:

Answer: 2.0 or 2

Step-by-step explanation:

How To Round: 1-4 round down. 5-10 round up.

I hope this helps you!

Answer: 2.0 or just 2

Step-by-step explanation: 3 is lower than 5 so you have to make it a zero

Answer:

all work is shown and pictured

Answer:

18 in

Step-by-step explanation:

A=1/2 bh

180 = (20* h)/2

180*2 = 20*h

(180*2)/20 = h

360/20 = h

18 in = h

Sadie’s family’s car is slightly more fuel efficient than Nanette’s family’s car.

Answer:

Sadie's car is more fuel efficient.

Step-by-step explanation:

Consider the provided information.

For comparison both quantity should be same. So convert miles per gallon into kilometers per liter.

Sadie tells her family's car is getting 42 miles per gallon.

To convert miles per gallon into liters per km use the formula:

1 miles per gallon = 0.425144 kilometers per liter

Multiply both the sides by 42.

1×42 miles per gallon = 0.425144×42 kilometers per liter

42 miles per gallon = 17.856 kilometers per liter

That means Sadie's car millage is 17.856 kilometer per liter.

Nanette tells Sadie that her family’s car uses 6 liters per 100 km.

6 Liters = 100 km

Divide both sides by 6.

1 Liters = 16.66..

That means Nanette's car millage is approximately 16.67 kilometer per liter.

Hence, Sadie's car is more fuel efficient.

Answer:

- 4(x + 3)(x - 2)

Step-by-step explanation:

Given

- 4x + 24 - 4x² ← rewrite in standard form, that is

- 4x² - 4x + 24 ← factor out - 4 from each term

= - 4(x² + x - 6) ← factorise the quadratic

Consider the factors of the constant term (- 6) which sum to give the coefficient of the x- term (+ 1)

The factors are + 3 and - 2, since

3 × - 2 = - 6 and 3 - 2 = + 1, hence

x² + x - 6 = (x + 3)(x - 2), and

4x² - 4x + 24 = - 4(x + 3)(x - 2)

Answer:84

Step-by-step explanation:

p = perentsis acccording to pemdas you have to multiply then 8x2  =16 +5=21

21 x4 = 84

Answer: c=11, m=28

Step-by-step explanation:

c= Chris's score

m= Mike's score

c+m=39                 we know from the equation that their scores

                              add up to 39, so this equation is a good starting

                              point.

c+2(c+3)=39          we also know that Mike's score is twice the sum of Chris's

                              score and 3 so we can substitute that in for his score.

                              now we can solve.

c+2c+6=39             distribute

3c+6=39                 combine like terms

   -6  -6                  

3c=33                     addition property of equality

÷3  ÷3          

c=11                         multiplication property of equality

Now that we know Chris's score, we simply substitute that number in in our simple equation for earlier to find Mike's score.

11+m=39                  substituted in 11 for c

-11     -11                  

m=28                       addition property of equality

There you go! Don't worry, I had a lot of trouble with these types of problems too. That's why I'm so good at them now Hope this helps!

Answer:

cylinder has greater volume

Answer:

Step-by-step

Answer:

if i see them it my be 5x6x7=76 6(*)665_+65x673 then add those toether then sub em 56-78-463=738

Step-by-step explanation:

Hello!

I do believe you meant to say:

"What is the difference between a ray and a line segment?"

The difference between a ray and a line segment is:

A ray has one endpoint and continues in one direction. a ray is infinite

A line segment has two endpoints. a line segment is finite

I hope this helps, and have a nice day!