round to the place value of the underlined digit 12,387 and 2 is underlined

Final answer:

To find the missing term in the proportion 72:24 = 15:__, you divide 72 by 24 to find the common ratio, which is 3. Then, you set 15/x = 3 and solve for x, giving you the missing term 5, making the proportion 72:24 = 15:5.

Explanation:

To find the missing term in the proportional relationship 72:24 = 15:__, we can set up a proportion where both ratios are equal. We know that 72 divided by 24 equals 3, so the missing term, which we'll call x, needs to satisfy the equation 15/x = 3.

By cross-multiplying, we get:

15 * 1 = 3 * x

15 = 3x

x = 15 / 3

x = 5

Therefore, the missing term is 5, and the proportion correctly reads 72:24 = 15:5.

Your answer is C. Y= -4x-12

First, model it out in an equation, and lets say x is the amount carrie walked

x+2x+3x=15

Then, combine like terms

6x=15

then divide

2.5

So now we have carries walk speed, then we go by the question, multiply 3 by 2.5 for amy, and 2 by 2.5 for marcus

carrie walked 2.5 miles

marcus walked 5 miles

amy  walked 7.5

To find out how many miles Amy, Marcus, and Carrie each walked, algebra is used. Carrie walked 2.5 miles, Marcus walked twice as much (5 miles), and Amy walked three times as much as Carrie (7.5 miles), totaling 15 miles.

The student is asking how many miles Amy, Marcus, and Carrie each walked if together they walked a total of 15 miles in the Wilbur School Walkathon, with Marcus walking twice as far as Carrie, and Amy walking three times as far as Carrie. To solve this problem, we can use algebra. Let's denote the number of miles Carrie walked as c. According to the problem, Marcus walked twice as far as Carrie, so Marcus walked 2c miles. Amy walked three times as far as Carrie, therefore Amy walked 3c miles.

Total distance walked by all three together is 15 miles.

Carrie walked c miles.

Marcus walked 2c miles.

Amy walked 3c miles.

The sum of their distances is equal to the total distance, so we can write the equation c + 2c + 3c = 15. When we add up the left side, we get 6c = 15. To find out how many miles Carrie walked, we divide both sides of the equation by 6, resulting in c = 15 / 6, which simplifies to c = 2.5. Carrie walked 2.5 miles.

Since Marcus walked twice as much, Marcus walked 5 miles (2 times 2.5). And since Amy walked three times as much as Carrie, Amy walked 7.5 miles (3 times 2.5).

The correct way to write the number 3.405 in expanded form is 3×1 + 4×1/10 + 5×1/1,000.

The weight of Darrin's phone is given as 3.405 ounces. You are asked to write this decimal number in expanded form. The concept of expanded form is a way to break down numbers to show how each digit in a number has a value based on its position or place. In the case of 3.405, the 3 is in the ones place, the 4 is in the tenths place, and the 5 is in the thousandths place. As such, when we expand the number, we multiply each digit by the place it represents: 3×1 + 4×1/10 + 5×1/1,000 , option A is the correct one for representing the number 3.405 in expanded form.

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If it's $2.70 now, the cost would be $4.45 in 1995.

To find the 1995 cost of a movie ticket that was $2.70 in 1980, divide the 1995 CPI by the 1980 CPI and multiply by the 1980 price. The calculation yields a cost of approximately $4.99 for a movie ticket in 1995.

To calculate the cost of a movie ticket in 1995 using the Consumer Price Index (CPI) from 1980 to 1995, we can use the formula to adjust prices based on inflation:

Let's assume the cost of a movie ticket in 1980 was $2.70. The CPI for 1980 is 82.4, and for 1995 it is 152.4. We calculate the ratio as 152.4 / 82.4 = 1.8495.

Multiplying the 1980 ticket price by this ratio gives us:

$2.70 * 1.8495 = $4.99 approximately.

Therefore, the cost of a movie ticket in 1995, adjusted for inflation, would be about $4.99.

Answer:

what is the question please?

Step-by-step explanation:

Courage.

Heros often take risks, you must have courage to take risks.

Answer:

Courage

Step-by-step explanation:

Hero has some special characteristics which makes him hero

one of those characteristics of a hero is that a hero always shows courage and never fall down or run out from the situations instead he faces all the challenges with courage and never pocks down even in tricky situations.

a hero is that which helps the other when they need him in any situation or at any mode  of life.a real hero does not care for his life .To save others he put his life in danger and shows courage.

all these qualities make a person a real hero.

Answer:

An integer is a whole number  that can be positive, negative, or zero

The negative of a negative number is positive. -(-3) = +3

The negative of a positive number is negative. -(3) = -3

Zero can neither be positive nor negative

Equivalent expressions are expressions with the same value.

The equivalent expression is [tex]\mathbf{5(2) +5(7)}[/tex]

The expression is given as:

[tex]\mathbf{5(2 +7)}[/tex]

Express as an equation

[tex]\mathbf{5(2 +7) =5(2 +7)}[/tex]

Apply distributive property

[tex]\mathbf{5(2 +7) =5(2) +5(7)}[/tex]

Hence, the equivalent expression is [tex]\mathbf{5(2) +5(7)}[/tex]

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Hello!

[tex]\frac{3}{10}*\frac{8}{9}[/tex]

Explanation:

↓↓↓↓↓↓↓↓↓↓

First you had to multiply by the fractions.

[tex]\frac{3*8}{10*9}[/tex]

Then you can multiply by the numbers.

[tex]\frac{24}{10*9}[/tex]

Next you can also multiply by the numbers again.

[tex]\frac{24}{90}[/tex]

You can also can the common factor of 6.

[tex]\frac{4}{15}[/tex]

Answer⇒⇒⇒⇒⇒4/15

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

d(4) = 64

substitute n = 2, 3, 4 into d(n) = d(n - 1) + 17

d(2) = d(1) + 17 = 13 + 17 = 30

d(3) = d(2) + 17 = 30 + 17 = 47

d(4) = d(3) + 17 = 47 + 17 = 64

Answer:

NOT the graph A and the graph B.

Step-by-step explanation:

y = mx + b

m - slope

b - y-integer

If m > 0 then the function is increasing.

if m < 0 then the function is decreasing.

We have y = -2x + 3

m = -2 < 0 the function is decreasing

b = 3 y-intercept = 3

The x-intercept: y = 0. Substitute

0 = -2x + 3     add 2x to both sides

2x = 3    divide both sides by 2

x = 1.5

Therefore your answer is C or D (look at the picture)

The coordinates of the entrance to the new city park on this map should be (-5, -3).

In Mathematics and Geometry, a reflection over or across the y-axis or the line y = 0 is represented by this transformation rule .

This ultimately implies that, a reflection over or across the y-axis would maintain the same y-coordinate while the sign of the x-coordinate changes from positive to negative or negative to positive.

By applying a reflection over the y-axis to the coordinates of the point for the school entrance (5, -3), we have the following coordinates of its image;

(x, y)         →              (-x, y)

(5, -3)        →         (-5, -3)

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3p + 3q = 36    equation 1

5p + 39 = 40    equation 2

subtracting 39 both sides of equation 1.

5p +39 -39= 40-39

5p =1 ⇒   5p/5 = 1/5     ⇒ p = 1/5

putting value of p in equation 1.

3(1/5) +3q =36

3/5 +3q  =36       equation 3

subtracting 3/5 both sides equation 3 becomes.

3q =36 -3/5

3q=177/5      equation 4

dividing 3 both sides of equation 4

q=59/5

To estimate the number of bottles Margaret can fill, multiply the daily milk production (21.7 liters) by the number of production days (280) to get the total milk produced, then divide this by the volume of one bottle (0.5 liters) to determine the number of bottles (12152).

Estimating Number of Bottles from Milk Production

Margaret has goats that produce an average of 21.7 liters of milk a day for 280 days. The key task here is to estimate how many half-liter bottles could be filled with this amount of milk. Since each bottle holds half a liter, we need to calculate the total volume of milk and then divide it by the volume of one bottle, which is 0.5 liters.

Therefore, Margaret would be able to fill an estimated 12152 half-liter bottles with the milk produced.

Not for just 5 points...

1.There are 167960 different ways the list of starting players could be formed.

2. The number of ways to write the batting order is 362880.

3. 42,758,676 different ways the group of interviewees can be made.

4. The total number of ways the students can win first, second, or third place is 144 ways.

5. The total number of different answer keys possible is 4096 ways.

1. **Varsity Baseball Team:**

  There are 20 students on the team, and 9 will be chosen for the starting lineup. The number of ways to choose 9 out of 20 students is calculated by the binomial coefficient formula, also known as "20 choose 9":

 [tex]\[ \binom{20}{9} = \frac{20!}{9!(20-9)!} = 167960. \][/tex]

2. **Batting Order:**

  Once the starting lineup is selected, there are 9 players. The first position can be any of the 9 players, the second position can be any of the remaining 8 players, and so on. So, the number of ways to write the batting order is [tex]\(9! = 362880\) (9 factorial).[/tex]

3. **Jury Duty:**

  There are 42 citizens, and 11 need to be chosen. The number of ways to choose 11 out of 42 is given by the binomial coefficient [tex]\(\binom{42}{11} = \frac{42!}{11!(42-11)!}\).[/tex] Calculating this gives [tex]\(42,758,676\)[/tex] different ways the group of interviewees can be made.

4. **Spelling Bee:**

  There are 24 students competing for first, second, and third place. For the first place, there are 24 choices, for the second place, there are 23 choices (as one student has already won the first place), and for the third place, there are 22 choices left. So, the total number of ways the students can win first, second, or third place is [tex]\(24 \times 23 \times 22 = 12,144\)[/tex] ways.

5. **Multiple Choice Test:**

  Each of the 6 questions has 4 possible answers. For each question, there are 4 choices. Since there are 6 questions, the total number of different answer keys possible is [tex]\(4^6 = 4096\)[/tex] ways.

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The Range for that function is [0,infinite)

Answer:

Team A= 2b-5

Team B= b

Team C= b+80

The equation representing this scenario is (2b-5)+ b + (b+80)= 983

Step-by-step explanation:

Solving the equation b + (2b - 5) + (b + 80) = 983, we found that Team B scored 227 points. Therefore, Team A scored 449 points and Team C scored 307 points.

To represent the scenario mathematically, let's define the variable b as the total points scored by Team B. Then, we can express the points scored by the other two teams in terms of b:

The combined score for all three teams was 983 points. Thus, we can write the equation:

Simplify the equation step-by-step:

So, Team B scored 227 points.

Answer:

100///////////////////////////

Step-by-step explanation:

2.50 x 8.00= 10.50. :)

The relationship between the number of drinks bought and the total cost is represented by the equation [tex]C = 2.50 \times d[/tex], with d being the number of drinks. A table can be used to display this relationship, indicating the incremental increase in cost with each additional drink.

To represent the relationship between the number of drinks bought at the fair and the total cost, we can define a variable, let's say d, where d represents the number of drinks purchased. Since each drink costs $2.50, we can write the equation for the total cost C as:

[tex]C = 2.50 \times d[/tex]

Now, let's construct a table to show some examples of how this equation works:

 Number of Drinks (d) Cost (C)   1 $2.50   2 $5.00   3 $7.50   4 $10.00  

The equation C = 2.50  imes d helps us understand that for every additional drink bought, the cost increases by $2.50.

well first you want to do 21/32 and you get 0.6562

then youll do 7/8 you get 0.875

then youll divide 0.6562 by 0.875 you get 0.7499

then it would be 7499/10000 converted back into a fraction

To divide fractions like 21/32 divided by 7/8, we multiply the first fraction by the reciprocal of the second, getting (21 times 8)/(32 times 7) which simplifies to 3/4.

The subject in your question is Mathematics, specifically division of fractions. To divide fractions, we need to first understand the concept of reciprocal. The reciprocal of a fraction is obtained by swapping the numerator and the denominator. So the reciprocal of 7/8 is 8/7. When you divide by a fraction, it's the same as multiplying by its reciprocal. Therefore, 21/32 divided by 7/8 equals 21/32 times 8/7.

To further solve this, you multiply the numerators together to get a new numerator and the denominators to get a new denominator. So you get (21 times 8)/(32 times 7) which is 168/224. When you simplify this fraction, you should get 3/4. So, 21/32 divided by 7/8 is 3/4.

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Answer:

11. Triangles to rectangles: [tex]\frac{1}{4}[/tex] or [tex]1:4[/tex]

    For each triangle there are 4 rectangles.

12. Soccer balls to footballs: [tex]\frac{3}{5}[/tex] or [tex]3:4[/tex]

    For every 3 soccer balls there are 5 Footballs.

13. - Kittens to puppies: [tex]\frac{3}{1}[/tex] or [tex]3:1[/tex]

       For every 3 kittens there is a puppy.

    - Puppies to kittens: [tex]\frac{1}{3}[/tex] or [tex]1:3[/tex]

      For each puppy there are 3 kittens.

Step-by-step explanation:

To express a counting problem as a ratio you should divide the number of things before the word "to" by the number of things after the word "to". A ratio can be expressed as a fraction or separating the two numbers with a colon (a:b).

Let's apply this to each one of our problems.

11. Here we have triangles to rectangles, so we are going to divide the number of triangles by the number of rectangles.

We can count 2 triangles and 8 rectangles from our picture, so

Triangles to rectangles = [tex]\frac{NumberofTriangles}{NumberifRectangles} =\frac{2}{8}[/tex]

Notice that both numerator and denominator of our ratio are divisible by 2, so simplify it, we just need to divide them both by 2:

[tex]\frac{2}{8} =\frac{\frac{2}{2} }{\frac{8}{2} } =\frac{1}{4}[/tex]

So the ratio from triangles to rectangles is [tex]\frac{1}{4}[/tex] or [tex]1:4[/tex]

which means that for 1 triangle there are four rectangles.

12. Here we have soccer balls to footballs, so we are going to divide the number of soccer balls to the number of footballs and simplify our resulting fraction. We have 6 soccer balls and 10 footballs in our picture

Soccer balls to footballs = [tex]\frac{NumberofSoccerBalls}{NumberofFootballs} =\frac{6}{10} =\frac{\frac{6}{2} }{\frac{10}{2} } =\frac{3}{5}[/tex]

For every 3 soccer balls there are 5 Footballs.

13. Here we have kittens to puppies or puppies to kittens. We know that there are 36 Kittens and 12 puppies.

- Kittens to puppies = [tex]\frac{NumberofKittens}{NumberofPuppies} =\frac{36}{12} =\frac{\frac{36}{12} }{\frac{12}{12} } =\frac{3}{1}[/tex]

For every 3 kittens there is a puppy.

- Puppies to kittens = [tex]\frac{Number of Puppies}{NumberofKittens} =\frac{12}{36} =\frac{\frac{12}{12} }{\frac{36}{12} } =\frac{1}{3}[/tex]

For each puppy there are 3 kittens.

Answer: 32

Step-by-step explanation:

Complete solution is attached below.

The correct option is Brianna's equation [tex]\dfrac{1}{p^5q^0}[/tex].

To find the correct simplification of given expression we have to apply negative exponent rule.

Given:

The given expression is [tex]\dfrac{p^{-5}}{q^0}[/tex].

The negative exponent can be change in to positive by writing same in denominator and 1 in numerator.

Simplify the given expression.

[tex]\dfrac{p^{-5}}{q^0}=\dfrac{1}{p^5q^0}[/tex]

Thus, the correct option is Brianna's equation [tex]\dfrac{1}{p^5q^0}[/tex].

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C) X also increases to y7 times its original value

Let n = the unknown number.

Six times a number =  6 * n = 6n

20 more than number = n + 20

Greater than = >

Put it all together:

6n > n + 20

Subtract n from both sides to get constants on one side and variables on the other:

6n - n > 20

5n > 20

Divide both sides by 5 to isolate variable N

n > 4

or (4, ∞)

[tex]\mathrm{Multiply\:without\:the\:decimal\:points,\:then\:put\:the\:decimal\:point\:in\:the\:answer},25\cdot:3=75,2.5\mathrm{\:has\:}1\mathrm{\:decimal\:place},0.3\mathrm{\:has\:}1\mathrm{\:decimal\:place},\mathrm{Therefore,\:the\:answer\:has\:}2\mathrm{\:decimal\:places},=0.75[/tex]

Hope This helps!!!

2.5 times 0.3 is 0.7500 when expressed to four decimal places, taking into account the correct amount of significant figures.

The question asks to calculate 2.5 times 0.3 and express the result to four decimal places. To perform this multiplication, we multiply

2.5 × 0.3 = 0.75.

When expressing the result with four decimal places, we add extra zeros as necessary, resulting in 0.7500. It's important to remember that calculators provide results that must be rounded to reflect the number of significant figures of the initial numbers involved in the calculation.

Answer: -3< 0

Step-by-step explanation: this means -3 is less than 0.

As on number line -3 and 0 are marked. We know 0 is origin if we go rightward i .e towards the positive number all numbers are greater than zero.

But if we move leftward on number line the numbers are less than zero.