When going more than 38 miles per hour, the gas mileage of a certain car fits the model y = 43.81 - .395x where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)

Answers

Answer 1
15= 43.81-.395x
move the 43.81 to the other side by subtracting it on both sides.
-28.81=-.395x
divide -28.81 by -.395 and get x
x=72.9367= 73 miles per hour to get 15 miles per gallon
Answer 2

Answer:

d. 73

The car will average 15 miles per gallon at the speed 73 miles per hour

Step-by-step explanation:

Your equation is: y = 43.81 - 0.395x

We need to solve for x if y = 15

So plug 15 into your equation: 15 = 43.81 - 0.395x

Then rearrange your equation to get the variable by itself and change the sign: 0.395x = 43.81 - 15

Subtract 43.81 - 15 = 28.81

0.395x = 28.81

Then divide both sides of the equation by 0.395

0.395x/0.395 = 28.81/0.395

x = 72.9367088608

Then (Round to nearest whole number.)

Giving you your solution of 73

To Conclude:

The car will average 15 miles per gallon at the speed 73 miles per hour


Related Questions

round 0.785 to the nearest hundredth.

Answers

Answer: 0.79
5 will always round up.
it is 78.5 because you have to  think of the hundredth

A line has slope 2/3 and y–intercept −2. Which answer is the equation of the line? A) y=2x+2/3
B)y=−2x+2/3
C)y=2/3x−2
D)y=2/3x+2

Answers

Insert the given slope (2/3) and y-intercept (-2) into the slope-intercept form of the equation of a str. line:

y = mx + b            =>   y = (2/3)x - 2 (answer)

The equation of the line is [tex]\bold{y = \frac{2}{3}x-2}[/tex]

The correct answer is an option (C)

What is slope of the line?

"It is the change in y coordinate with respect to the change in x coordinate."

What s y-intercept?

"It is the point at which the line intersects the Y-axis."

What is slope-intercept form of line?

"y = mx + c, where m is the slope and cis the y-intercept."

For given question,

A line has slope 2/3 and y–intercept -2.

So, m = [tex]\frac{2}{3}[/tex] and c = -2

Substitute these value in the slope-intercept form of line,

[tex]\Rightarrow y = mx + c\\\\\Rightarrow y = \frac{2}{3}x+(-2)\\\\ \Rightarrow y = \frac{2}{3}x-2[/tex]

Therefore, the equation of the line is [tex]\bold{y = \frac{2}{3}x-2}[/tex]

The correct answer is an option (C)

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Which angles are corresponding angles?

Answers

The answer to this question is angles SRU and VUW
Hope this helps

Answer:

<SRU and <VUW

Step-by-step explanation:

Corresponding angles occur when two lines are cut by a third line (transverse line).

In the problem you can see two lines (QRS) and (TUV) cutting by (PRUW).

Two angles are corresponding if one is on the outside (outside the two lines) and the other is on the inside (between the two lines).

In this graphic some of the corresponding angles are <SRP and <VUP, <PRQ and <RUT, <WUV and <URS.

A gym charges a $20 sign-up fee plus $25 per month.  You have a $120 gift card for the gym. When does the total spent on your gym membership exceed the amount of your gift card?

Answers

When does the total spent on your gym membership exceed the amount of your gift card is After 4 months

Given:

Sign-up fee = $20

Monthly fee = $25

Gift card = $120

Now let determine when does the total spent on gym membership exceed the amount gift card

Let x represent the number of months

Hence:

20 + 25x = 120

25x= 120-20

25x= 100

x=100/25

x=4

Inconclusion When does the total spent on your gym membership exceed the amount of your gift card is After 4 months.

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What is the distance between these two points on a number line?


–93 and 114
A.–207
B.–21
C.21
D.207

Answers

114 - (-93) = 207

answer
D.207
Well, subtract the two numbers. 114 - (-93) [because it says difference.] 114 - (-93) is 207. So, D is your answer.

Hope this helped! ☺♥

A birthday celebration meal is $46.40 including tax,but not the tip.Find the total cost if a 15% tip is added to the cost of the meal.

Answers

$46.40 * .15=6.96
$46.40 +6.96= $53.36
well, first off let's find what 15% of the meal cost is anyway, so, what's 15% of 46.40?

if we take 46.40 as the 100%, well, let's check what is the 15% of that.

[tex]\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 46.40&100\\ x&15 \end{array}\implies \cfrac{46.40}{x}=\cfrac{100}{15}\implies \cfrac{46.40\cdot 15}{100}=x[/tex]

so, the total cost is then, 46.40 + x.

A single ball is drawn from an urn containing 6 balls numbered 1 through 6. Find the probability that the ball choosen is as follows.

An even-numbered ball or an odd-numbered ball

Answers

Final answer:

The probability of drawing an even-numbered ball or an odd-numbered ball from the urn is 1.

Explanation:

To find the probability of drawing an even-numbered ball or an odd-numbered ball from an urn containing 6 balls numbered 1 through 6, we need to determine the total number of favorable outcomes and divide it by the total number of possible outcomes.

The total number of possible outcomes is 6, as there are 6 balls in the urn.

The favorable outcomes are the even-numbered balls (2, 4, 6) and the odd-numbered balls (1, 3, 5), which is a total of 6 balls.

Therefore, the probability of drawing an even-numbered ball or an odd-numbered ball is 6/6, which simplifies to 1.

James bought 12 cookies and ate 3 of them. He ate ____% of the cookies.

Answers

12 - 3 = 9
So there are 9/12 cookies left. 
So then John ate 3/12 cookies. 
3/12 = 1/4 
Convert into a decimal. .
1/4 = 0.25
0.25 = 25%
So, James bought 12 cookies and ate 3 of them. He ate 25% of the cookies. 

Dan paid 34.30 for a sweater. The price included a 40% markup.

Answers

Multiply 34.30 by 1.4
actual price = paid price + discounted price
discounted price = paid price * 40%
so, actual price = 34.30 + 34.30*0.4

solve for n
15=0.5n whats is n=

Answers

we know 15=0.5n
n=15/0.5
n=30

a class donated $3.5 in nickels and dimes. In all there were 45 coins. how many were there of each

Answers

So first, I would assume they all are nickels, to see how short of $3.50 we are.

So, 45 coins times the value of 5 cents would then be $2.25.

So that means we are 1.25 dollars short of 3.50 dollars.

If the dime is worth 5 cents more then the nickel is, we can just divide 1.25 by 5 cents to see how many extra 5 cents we need.

1.25/0.05 = 25

So therefore there were 25 dimes, and through that we can tell there were 20 nickels.

Latrell is packing boxes that can contain two types of items. Board games weigh 3 pounds and remote controlled cars weigh 1.5 pounds. The box can hold no more than 25 pounds.

Let x represent the number of board games. Let y represent the number of remote controlled cars.


Enter an inequality that represents the situation.







Answers

3x + 1.5 y < 25
hope this helps!
3x+1.5y≤25 X represents board games and each board game weighs 3 lbs (3x). Y represents remote controlled cars which each weigh 1.5 lbs (1.5y). The inequality sign (less than or equal to, ≤) is used because in total the amount of board games and remote controlled cars CANNOT exceed 25 lbs. 

what is 150% of 128 ??

Answers

Well, OF in mathematics represents multiplication. And % means over 100. So basically, this question can be represented as
150/100 x 128
1.5 x 128
That will be 192
Hope I helped. Good luck

Which of the following slopes show that the set of points C(1, 1), D(3, -4), E(5, 8) are not collinear?

Answers

c is the answer you want

Answer:

C (-1, 1/2, -3/5) is INCORRECT and I know it isn’t (1/3, -5/3, -2/5)...... but I’m pretty sure the answer is 1/2, 3, 5

Step-by-step explanation:

What is the value of eight in 485,002,000

Answers

THE VALUE IS 80,000,000
The value of 8 in 485,002,000 would be 80,000,000.

Write 7 over 8 as an equivalent fraction with 56 as a denominator

Answers

7/8 = ?/56
7 times 7 = 49
8 times 7 =56

The answer is 49/56
7/8= 49/56
8 x 7=56 for the denominator 
7 x 7 =49 for the numerator 

Write the following comparison as a ratio reduced to lowest terms.

153 inches to 12 feet

HELP!

Answers

Answer:

17:16

Step-by-step explanation:

12 ft = 144 inches, so this is

153 in : 144 in

= 9·17 : 9·16

= 17 : 16

Two parallel lines are crossed by a transversal. What is the value of g? g = 75 g = 80 g = 100 g = 105

Answers

the answer is 105 because they are like the same thing and in sort of the same place just perpendicular from each other.

we know that

If the lines u and w are parallel

then

∠g=[tex]105\°[/tex] ------> by alternate exterior angle

therefore

the answer is

∠g=[tex]105\°[/tex]

In the Numbers Game, a state lottery, four numbers are drawn with replacement from an urn containing balls numbered 0-9, inclusive. Find the probability that a ticket holder has the indicated winning ticket.
The first two digits in exact order.

Answers

There are 10 digits from 0 to 9, inclusive.

Thus, number of ways in which four numbers will be drawn from an urn containing balls numbered 0-9, inclusive is given by [tex]10^4=10,000[/tex]

The number of ways in which a ticket holder will have the first two digits in the correct order is the same as the number of ways in which two numbers will be drawn from the urn containing balls numbered 0-9, inclusive and is given by [tex]10^2=100[/tex]

Therefore, the probability that a ticket holder has the first two digits in exact order is given by [tex] \frac{100}{10,000} = \frac{1}{100} =0.01[/tex]

Final answer:

The probability of winning the indicated ticket in the Numbers Game is 1/100 or 0.01.

Explanation:

To find the probability of winning the indicated ticket in the Numbers Game, we will calculate the probability of the first two digits in exact order.

There are 10 numbers (0-9) to choose from in each digit, and since replacement is allowed, the probability of choosing the correct first number is 1/10. Similarly, the probability of choosing the correct second number is also 1/10.

Since the two selections are independent, we can multiply the probabilities together to find the probability of both selections being correct. Therefore, the probability of winning the indicated ticket is (1/10) * (1/10) = 1/100 or 0.01.

How to find the inverse of h(x) = 3/ -x - 2 List steps.

Answers

To find the inverse,

First, you would have to switch the domain and range. In other words, swap x and y:

h(x) = 3/ -x-2
y = 3/ -x-2
x = 3/ -y-2

Then, when you have this, simply solve for y:

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

So the inverse would be
 h⁻¹(x)= -3/x -2

Which of these is the greatest value: 8/3, 2.28, 10/12, 0.199

Answers

8/3 would be your answer, hoped I helped! 

8/3 is the greatest value among 8/3, 2.28, 10/12, and 0.199.

The greatest value to be determined among 8/3, 2.28, 10/12, and 0.199.

What is the fraction?

Fraction is defined as the number of compositions that constitute the Whole.

Here,
= 8/3, 2.28, 10/12, and 0.199.
= 2.66, 2.28 , 0.62 and 0.199
The greatest among the 2.66, 2.28, 0.62, and 0.199 is 2.66

Thus, 8/3 is the greatest value among 8/3, 2.28, 10/12, and 0.199.

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Why are percents used to compare ratios when the wholes are different

Answers

A percentage can be considered a fraction with a denominator of 100. 25% is 25/100, which can be simplified to 1/4. Similarly, 20% is 20/100, which simplifies to 1/5. Thus, 1/4 is comparable to 1/5 by comparing 25% to 20%.

The percent is used to compare the ratios when the wholes are different because it gives simple calculation.

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

The percent's are used to compare ratios when the wholes are different.

Now,

Let two ratios are,

⇒ 19/25 and 17/20

So, For compare we can find the percent of that ratios and simply by comparison we get the large and small ratio as;

⇒ 19/25 = 0.76 = 76%

⇒ 17/20 = 0.85 = 85%

Thus, The percent of ratio 17/20 is more than the percent of ratio 19/25.

So, The percent's are used to compare ratios when the wholes are different because it gives simple calculation and not to make denominator same.

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If m and n are integers is 6m^2+34n-18 an even integer?

Answers

For any integers m and n, [tex]\(6m^2 + 34n - 18\)[/tex] is always even Integer . One solution is [tex]\(m = 1, n = 2\)[/tex].

To determine if the expression [tex]\(6m^2 + 34n - 18\)[/tex] is an even integer for any integers m and n, let's analyze the terms.

The expression can be factored as [tex]\(2(3m^2 + 17n - 9)\).[/tex] Since 2 is a factor of the expression, it implies that the entire expression is even. Therefore, for any integers m and n, [tex]\(6m^2 + 34n - 18\)[/tex] is an even integer.

Now, to find possible values for m and n that satisfy the condition, consider that [tex]\(3m^2 + 17n - 9\)[/tex] must be an integer. We can choose arbitrary values for m and n and verify that [tex]\(3m^2 + 17n - 9\)[/tex]is an integer. For example, let m = 1 and n = 2:

[tex]\[3(1)^2 + 17(2) - 9 = 3 + 34 - 9 = 28\][/tex]

Since 28 is an integer, m = 1 and n = 2 are valid solutions.

conclusion, any integers m and n will make [tex]\(6m^2 + 34n - 18\)[/tex]an even integer. One such solution is m = 1 and n = 2, and there are infinitely many other possible pairs of integers that satisfy this condition.

a chemist is using 364 millimeters of a solution of acid and water. if 16.8% of the solution is acid, how many millimeters of acid are there?

Answers

61.152 milliliters is the answer.

Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of \$10$10dollar sign, 10 from each of the subscribers to her website. Last month, the website had 100100100 subscribers. This month, 303030 new members joined the website, and 101010 members cancelled their subscription. How much money will Kiersten’s online business earn this month?

Answers

Answer:

1200

Step-by-step explanation:

Khan Academy

ur welcome

dab if you got it correct

*or you can rate me and give a thanks*

;)

Kiersten’s will earn 1200 dollars from his online business  this month.

Given,

Subscription fees received by Kiersten for a month by each subscriber is $10.

Since the number of members is 100 last month, so total earning of Kiersten will be,

[tex]100\times 10=1000[/tex] dollars.

According to the question, this month, 30 new members joined the website, and 10 members cancelled their subscription.

So the number of members increased will be 20.

Hence the kiersten have total 120 members this month, so the total earning of kiersten this month will be,

[tex]120\times 10=1200[/tex] dollars.

Thus kiersten earn 1200 dollars from his online business.

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What are the coordinates of the vertex of the graph of f(x)=2|x−3| ? Enter your answer in the boxes.

Answers

notice f(x)=2|x−3| , what value of "x" makes that group 0?  well, say if make x = 3, then we get |3 - 3| or 0... so 3 then.

[tex]\bf vertex~(h,k)\qquad f(x)=2|x-3|+0\implies f(x)=2|\stackrel{h}{\boxed{3}}-3|+\stackrel{k}{\boxed{0}}[/tex]

that puts the vertex at 3,0.

The vertex of the given function is [tex](3,0)[/tex].

Given:

The given function is [tex]f(x)=2|x-3|[/tex].

To find:

The coordinates of the vertex of the graph of [tex]f(x)[/tex].

Explanation:

The vertex form of an absolute function is:

[tex]f(x)=a|x-h|+k[/tex]         ...(i)

Where, [tex]a[/tex] is a constant and [tex](h,k)[/tex] is the vertex.

We have,

[tex]f(x)=2|x-3|[/tex]          ...(ii)

On comparing (i) and (ii), we get

[tex]h=3[/tex]

[tex]k=0[/tex]

Therefore, the vertex of the given function is [tex](3,0)[/tex].

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what is 437284237940 divided by 2 - 2 times 1 -3 +42 divided by 7989

Answers

The answer would be 27367895.7325

A pizza shop charges $9.50 for a pizza, plus $1.90 for each topping. 
If the total charge for a pizza is dependent on the base price of the pizza plus the number of toppings ordered, what is the value of y at the y-intercept of the line representing this situation?

Answers

The value of y at the y-intercept for the given situation, representing the cost of a pizza without any toppings, is $9.50.

The value of y at the y-intercept represents the cost of a pizza without any toppings. When we graph the cost of the pizza as a function of the number of toppings, the y-intercept occurs when the number of toppings is zero (meaning no toppings were added).

Since the pizza shop charges $9.50 for a pizza without toppings, this is the value of y at the y-intercept. We can represent this relationship with a linear equation y = mx + b, where m is the slope (the cost per topping) and b is the y-intercept (the base price of the pizza). In this case, m is $1.90 and b is $9.50, so the equation would be y = 1.90x + 9.50. Therefore, the y-intercept is $9.50.

Which lists the steps in the correct order to find the median of this data set? 24, 16, 23, 30, 18, 29 1. Put the numbers in order. 2. Cross off high/low pairs. 3. Add the leftover numbers. 4. Divide the sum by 2. 1. Put the numbers in order. 2. Cross of high/low pairs. 1. Cross off high/low pairs. 2. Add the leftover numbers. 3. Divide the sum by 2. 1. Cross of high/low pairs.

Answers

To find the median of an even-numbered data set, arrange the numbers in order, identify the two middle numbers, add them, and divide by two. The median for the given data set is 23.5.

To find the median of the data set (24, 16, 23, 30, 18, 29), follow these steps:

Put the numbers in order from smallest to largest.If the data set has an even number of values (like this one with 6 numbers), identify the two middle numbers.Add the two middle numbers together.Divide the sum by 2 to find the median.

Applying these steps to the provided data set:

Order: 16, 18, 23, 24, 29, 30Middle numbers: 23 and 24Sum of middle numbers: 23 + 24 = 47Median: 47 / 2 = 23.5

The correct median of this data set is 23.5.

1. The top 1/8 of the runners advance to the finals for the track and field competition. What is the decimal value of the number? Show your work.

Answers

1/8=0.125
  
      0.125
    ______
8 I  1.000
     -   8
    ______
         20
     -   16
   _______
           40
     -     40
   _______
             0

Answer:

Hence the number in decimal is:

0.125

Step-by-step explanation:

We are given that:

The top 1/8 of the runners advance to the finals for the track and field competition.

We are asked to find the decimal value of the number i.e. we have to represent 1/8 in the decimal value.

on dividing the number 1 ( which is in numerator) by 8 ( which is in denominator) we obtain:

[tex]\dfrac{1}{8}=0.125[/tex]

Hence the number in decimal is:

0.125

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