Ruben is driving along a highway that passes through Barstow. His distance d, in miles, from Barstow is given by the equation
d = |210 − 60t|,
where t is the time, in hours, since the start of his trip and
0 ≤ t ≤ 5.
When will Ruben be exactly 90 miles from Barstow?

Answers

Answer 1

Answer:

after 2 hours, andafter 5 hours

Step-by-step explanation:

Given that Ruben's distance from Barstow is d = |210 -60t|, you want to know the time t when he is exactly 90 miles from Barstow.

Setup

The absolute value will be 90 when the argument of the function is either -90 or +90.

The question resolves to two equations:

210 -60t = -90210 -60t = 90

Solution

These two-step linear equations can be solved in the usual way:

-60t = -300 . . . . subtract 210-60t = -120

Then ...

t = -300/-60 = 5 . . . . divide by the coefficient of tt = -120/-60 = 2

Ruben is 90 miles from Barstow after driving 2 hours, and again after driving 5 hours.


Related Questions

Answer if you know your right, bur don't answer just for the points

Answers

Answer:

42% is less than 5/8

Step-by-step explanation:

If 42% is converted to a fraction, it comes out to 21/50, which is smaller than 5/8. You could also convert 5/8 into a percentage, which comes out to 62.5%. :)

Answer:

42% < 5/8

Step-by-step explanation:

We're going to change 5/8 to a percent. All you have to do is 5/8, which is 0.625. If you want to convert a decimal to a fraction, you move the decimal 2 places to the right, which is 62.5. Therefore, 42% is less, or < than 5/8.

The endpoints of CD are -6 and 15. Find the point P that partitions the segment
into the ratio 1:5.

Answers

The point P that partitions the segment into the ratio 1:5 is 3.5

How to find the location of P?

The given parameters are

C = -6

D = 15

P = 1 : 5

The location of point P is calculated as

P = 1/(1 + 5) * (D - C)

This gives

P = 1/6 * (15 + 6)

Evaluate

P = 3.5

Hence, the point P that partitions the segment into the ratio 1:5 is 3.5

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10 times a number equals 10 less than 12 times a number what is the number

Answers

Answer:

Step-by-step explanation:

Mathematically the statement can be written as 10x=12x-1010x-12x=-10-2x=-10[tex]\frac{-2x}{-2} =\frac{-10}{-5} \\x=5[/tex]That number is 5

Answer:

10×V=10-12×V=

Step-by-step explanation:

this is how for I understand it buh if am wrong my bad

Which of the following is a true statement? 43,962 < 34,048 20,473 < 24,928 21,046 > 26,397 32,433 > 34,048

Answers

Answer:

b) 20,473 < 24,928

Step-by-step explanation:

43,962 < 34,048

21,046 > 26,397

32,433 > 34,048

all have the sign pointed the wrong way

Answer: 20,473<24,928 is true

Step-by-step explanation:because 20,473 is less than 24,928 and 24,928 is greater than 20,473

I need help with this one

Answers

I think this will help

if y=12, what is the value of 85y+8-80y?

Answers

Answer: 68

Step-by-step explanation: Because I am smart  

Help me solve this problem please.

Answers

Answer:

  C.  1889

Step-by-step explanation:

Given fixed weekly costs of $3778 and a variable cost per handle of $1, you want to know how many handles must be produced weekly for sale at $3 each to break even.

Contribution margin

The "contribution margin" of each handle is the difference between its variable cost and its selling price:

  $3 -1 = $2

Break even

The enterprise will break even when the sum of contribution margins is equal to the fixed costs. If h is the number of handles produced and sold, then to break even, we must have ...

  2h = 3778

  h = 1889

1889 handles must be molded weekly to break even.

__

Additional comment

You get the same result if you write the profit equation and solve for the number of handles that makes profit be zero.

  profit = revenue -cost

  0 = (3h) -(3778 +1h)

  3778 = 2h . . . . . as above

  1889 = h

need help with this ​

Answers

Answer:

1

Step-by-step explanation:

1 is the number in which its reciprocal is its own because 1 has both the same numerator and denominator which means the reciprocal is the same. For example, 1/1 is equal to 1 and the reciprocal of 1/1 is 1/1

2/2 is equal to 1 and the reciprocal of 2/2 is 2/2

This can keep going on and on.

Hope this helps!

snow fell at a rate of 3/4 inch/hour. How much snow fell in a period of 6 hours?

Answers

Answer:

4.5 inches

Step-by-step explanation:

Well 3/4 is the same as 0.75

First multiply 0.75 by 6 to get the answer because 0.75 is how much it fell in an hour. So if you multiply by 0.75 by six hours you get your answer. Which is 4.5

Answer:

5.5 inches

Step-by-step explanation:

Because you multiply 3 by 6

Help now please. Will mark brainliest

Answers

Answer:

The expression that shows a valid step in

the process of finding the decibel level of the noise is dB = 10 log 150,000. Option C is correct

Given the equation for calculating the intensity of sound which is measured in decibel expressed as:

dB=10 log l

where;

I is the ratio of the sound to the human hearing threshold

Given that noise is 150,000 times greater than the human hearing threshold.

Substitute | = 150,000 into the expression above;

dB = 10 log 150,000

If this is correct, brainliest please.

is 4/3 and 3/4 equivalent fractions

Answers

Answer:

no

Step-by-step explanation:

3/4 is equivalent to 6/8,9/12, and 15/20

No, 4/3 is greater than 3/4

The school book fair has 72 nonfiction books and 328 fiction books for sale what percent of the book fair is non-fiction books

Answers

All you do to find the percent of nonfiction books is to divide 72 by 328. That would get you 21.95122. So basically 22%

Answer =About 22% of the books are nonfiction

Under her cell phone plan, Fatoumata pays a flat cost of $59 per month and $3 per
gigabyte. She wants to keep her bill under $75 per month. Which inequality can be
used to determine x, the maximum number of gigabytes Fatoumata can use while
staying within her budget?

Answers

Answer:

[tex]59 + 3x < 75[/tex]

Step-by-step explanation:

We know from the question that Fatoumata pays a flat cost of $59 per month and $3 per gigabyte.

If we consider [tex]x[/tex] to be the number of gigabytes she uses in a month, then her bill every month can be represented by the following expression:

[tex]59 + 3x[/tex] .

We are told that the bill has to be kept under $75. Therefore:

[tex]59 + 3x < 75[/tex]

This inequality can be used to solve for [tex]x[/tex], and so we can use it to find the maximum number of gigabytes she can use while keeping the bill under $75.

The inequality for the maximum number of gigabytes Fatoumata can use while staying within her budget will be equal to $59 + $3(x) < $75.

What is an equation?

Mathematical expressions with two algebraic symbols on either side of the equal (=) sign are called equations.

This relationship is illustrated by the left and right expressions being equal to one another. The left-hand side equals the right-hand side is a basic, straightforward equation.

As per the given information in the question,

Price of cell phone plan per month = $59

The price per gigabyte = $3

Then, the equation as per the statement will be,

$59 + $3(x)

Here, x is the number of gigabytes used in a month.

So, the inequality will be,

$59 + $3(x) < $75

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help would be appreciated :)

Answers

Answer: Trust me if you want but I think it is parallelogram. Maybe?

A man deposited 350 in his account in the bank.a simple interest of 4 percent per annum was paid on his deposit.calculate the total amount at the end of 4 years?

Answers

The total amount payable at the end of 4 years is 406

In this given sum we are provided with the values of principal , rate of interest , and the number of years , we are asked to calculate the amount payable after 4 years that is the matured amount which is calculated with the addition of the principal amount and the simple interest. For that we had to first find out the amount of interest and then we need to add that with the principal amount to get the matured amount or the amount that is payable at the end of 4 years.

here we have to apply the formulla of simmple interest :

(principal × rate of interest × no. of years )/ 100

In the given sum principal (p) = 350 , rate of interest (r) = 4% pa , no. of years (n) = 4

Simple interest = pnr/100

= (350 × 4 × 4)/100  = 56

Matured Amount = Principal + Interest

= 350 + 56 = 406

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m∠2=30 find m∠4
Please help!

Answers

Step-by-step explanation:

the answer is, so we are adding and multiplying by 2, so here is the answer: m<4=60

Answer:

m∠2 and m∠4 are opposite angles, this means that they are the same. Since m∠2 is 30 degrees, m∠4 is also 30 degrees.

The cost of a ticket to the circus is $14.00 for children and $38.00 for adults. On a certain day, attendance at the circus was 700 and the total gate revenue was $19,400. How many children and how many adults bought tickets?

Answers

Answer:

300 children and 400 adults

Step-by-step explanation:

14(x) + 38(700-x) = 19,400

14x + 26,600 - 38x = 19,400

14x - 38x = -7,200

-24x = -7,200

24x = 7,200

x = 300

x = childrens

700 - x = adults

300 = children

400 = adult

The age of two sibling are 10 and 13 years. In how many year will the product of their ages be 340?

Answers

Answer:

no choice but an hour or so much

Points A and B have coordinates A(–4,2) and B(3,–6) . Find the coordinates of point P, the weighted average of points A and B, in which point A has a weight of 2 and point B has a weight of 5.
HELP ME GEOMETRY THX

Answers

The coordinates of the point P is P(x, y) = (1, - 26 / 7). (Correct choice: C)

How to calculate a resultant point's coordinates using the weighted averages method?

We must locate the third point by applying a method based on a weight average-like formula after finding the coordinates of two points on the Cartesian plane:

P(x, y) = (2 / 7) * A(x, y) + (5 / 7) * B(x, y)

P(x, y) = (2 / 7) * (- 4, 2) + (5 / 7) * (3, - 6)

P(x, y) = (- 8 / 7, 4 / 7) + (15 / 7, - 30 / 7)

P(x, y) = ( 7 / 7, - 26 / 7)

P(x, y) = ( 1, - 26 / 7)

Therefore, the coordinates of the point P is P(x, y) = ( 1, - 26 / 7).

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The coordinates of the point P is P(x, y) = (1, - 26 / 7). (Correct choice: C)

How to calculate a resultant point's coordinates using the weighted averages method?

We must locate the third point by applying a method based on a weight average-like formula after finding the coordinates of two points on the Cartesian plane:

P(x, y) = (2 / 7) * A(x, y) + (5 / 7) * B(x, y)

P(x, y) = (2 / 7) * (- 4, 2) + (5 / 7) * (3, - 6)

P(x, y) = (- 8 / 7, 4 / 7) + (15 / 7, - 30 / 7)

P(x, y) = ( 7 / 7, - 26 / 7)

P(x, y) = ( 1, - 26 / 7)

Therefore, the coordinates of the point P is P(x, y) = ( 1, - 26 / 7).

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Start with the graph of the absolute value function. Stretch it by a factor of 3 and shift 2 units up.

Answers

The absolute value function of the given expression is g(x) = 3*Ix + 2I.

What is the role of absolute value?

The absolute value function is often assumed to provide the number's distance from zero on a number line. Algebraically, the output is really the value without respect to sign regardless of what the input value is.

According to the given data:

Let's define transformations in broad strokes.

A vertical stretch with scale factor A is denoted by:

g(x) = A*f(x)

A vertical shift in A units is denoted by:

g(x) = f(x) + A

If A is positive, the shift is positive; if A is negative, the shift is negative.

A horizontal shift in A units is denoted by:

g(x) = f(x - A)

If A is greater than zero, the shift is toward the right.

The shift  to the left if A is negative.

Then we begin with the maximum value parental function f(x) = IxI.

"The graph of both the absolute value parent function has been stretched vertically by a factor of three."

we can start with:

g(x) = 3*f(x)

"then shifted two units left"

g(x) = 3*f(x - (-2))

and since f(x) = IxI, they have:

g(x) = 3*Ix + 2I

the absolute value function of the given expression is g(x) = 3*Ix + 2I.

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The mural in the art gallery is 7 meters tall. It's 69 centimeters taller than the marble sculpture. How tall is the sculpture?

Answers

Mural Height = 7 meters

Find the height of the marble sculpture if the mural is 69 centimeters taller.

Solution:

Convert the height of the mural into centimeters to easily calculate how tall it is from the marble sculpture.

1 meter = 100 cm

7 meters = 700 cm

Subtract 69 cm from 700 cm in order to get the height of the marble sculpture.

700cm - 69 cm = 631 cm

Convert 631 cm into meters by dividing it with 100.

=631 /100

= 6.31 m

The height of the mural is 6.31 m

before leaving to visit Mexico, Levant traded 270 American dollars and received 3,000 Mexican pesos. when he returned from Mexico, he had 100 pesos left. How much will he receive when he exchanges these pesos for dollars?.​

Answers

He will receive $ 9 when he exchanges 100 pesos for American dollars.

We are given that:

Levant received 3000 Mexican pesos for 270 American dollars.

So, by using the unitary method, we will calculate the rate of 1 Mexican pesos for American dollars.

So, we get that:

3000 Mexican pesos = $ 270

1 Mexican Peso = $ 270 / 3000

1 Mexican Peso = 0.09

Now, we are also given that Levan has 100 pesos left.

So,

100 pesos = $ 0.09 × 100

100 pesos = $ 9

Therefore, he will receive $ 9 when he exchanges 100 pesos for American dollars.

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A dish containing bacteria has a diameter of 0.0001 kilometer. The diameter of a bacterium is 10^-16 How many times larger is the diameter of the dish than the diameter of the bacterium

Answers

For a dish that is containing bacteria has a diameter of 0.0001 kilometer. The diameter of a bacterium is 10^-16, the number of times that the diameter would be larger is 10¹² times.

How to solve for the diameter

We have the diameter of the dish to be 0.0001

This is the same as 10⁻⁴

The bacterium has the diameter at 10^-16

The difference between the diameter of the dish than the bacterium would be solved by

1 x 10⁻⁴ / 10^-16

= 10¹²

Hence we would have to say that for a dish that is containing bacteria has a diameter of 0.0001 kilometer. The diameter of a bacterium is 10^-16, the number of times that the diameter would be larger is 10¹² times.

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What is the simple interest if $1,000 is borrowed for 5 years at 5 % interest?

Answers

Step-by-step explanation:

A= $1250

Converting R percent to R a decimal

An 18-foot long section of a beam
weighs 2115 pounds.
If a section of the beam weighs 2350
pounds, how long is the section?

Answers

Answer: 2 feet

Step-by-step explanation:

2115/18=117.5 pounds per foot of section

2350-2115=235

235/117.5=2 feet

what is
3x+2(4x-4)=3

Answers

Answer:

x = 1

Step-by-step explanation:

Distribute

3x + 8x - 8 = 3

Gather like terms

11x - 8 = 3

Add 8 to both sides

11x = 11

Divide both sides by 11

x = 1

find the number n of hours you need to study on saturday so that the mean number of hours is 1.75

Answers

The value of the n in the mean value is 1.

According to the statement

We have to find that the value of the n in the mean.

So, For this purpose, we know that the

Mean is the simple mathematical average of a set of two or more numbers.

From the given information:

The mean number of hours is 1.75

Then

We are given that

Day       Hours

Sunday    0

Monday   1.5

Tuesday    2.5

Wednesday  2.5

Thursday       3

Friday            0

Saturday       n

Mean number of hours of  study per day=1.5

Then

Total number of days=7

Using the formula:

Mean = sum of data / Total number of the data points

1.5 = 9.5+n / 7

1.5*7 = 9.5+n

10.5 =  9.5+n

n =  10.5 - 9.5

n = 1.

So, The value of the n in the mean value is 1.

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5. The 50 snakes in the serpentarium include families of 10 vipers, 23 colubrids, 9 elapids, and 8 giant snakes.
Calculate the percent of each type of snake. Use the percent that you find and multiply each times 360° to
find the number of degrees for each sector.

I need help solving the percent and degree

Answers

Percent of vipers is 20% and its degree is 72 degrees.

Percent of colubrids is 46% and its degree is 165.60 degrees.

Percent of elapids is 18% and its degree is 64.80 degrees.

Percent of giant snakes is 16% and its degree is 57.60 degrees.

How we do calculate the percent and degree?

The percent can be calculated as follows:

Percent of vipers = (Number of vipers / Total number of snakes) * 100 = (10 / 50) * 100 = 0.20 * 100 = 20%

Percent of colubrids = (Number of colubrids / Total number of snakes) * 100 = (23 / 50) * 100 = 0.46 * 100 = 46%

Percent of elapids = (Number of elapids / Total number of snakes) * 100 = (9 / 50) * 100 = 0.18 * 100 = 18%

Percent of giant snakes = (Number of giant snakes / Total number of snakes) * 100 = (8 / 50) * 100 = 0.16 * 100 = 16%

The degrees can be calculated as follows:

Degree of vipers = Percent of vipers * 360 = 20% * 360 = 72 degree

Degree of colubrids = Percent of colubrids * 360 = 46% * 360 = 165.60 degree

Degree of elapids = Percent of elapids* 360 = 18% * 360 = 64.80 degree

Degree of giant snakes = Percent of giant snakes * 360 = 16% * 360 = 57.60 degree

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If rectangle A has sides that are three times the length of those in rectangle B, how do the areas of the two rectangles compare?
A. The area of A is three times the area of B.
OB. The area of A is six times the area of B.
OC. The area of A is eight times the area of B.
OD. The area of A is nine times the area of B.
E. The area of A is twelve times the area of B.

Answers

Answer:

D. The area of A is nine times the area of B.

Step-by-step explanation:

Area is the function of two dimensions.

If each dimension is increased 3 times then the area will increase:

3*3 = 9 times

Correct choice is D


Accounts Payable may sometimes include non-current or long-term payables in certain circumstances.
True
False

Answers

Accounts Payable may sometimes include non-current or long-term payables in certain circumstances is False

Non-current or long term  liabilities are obligations to be paid after 12 months or a operational cycle. It is opposite of current liabilities, where the debts are short-term and its maturing is within twelve months.

Non-current liabilities arises when the company is using  long term loans for the business requirements. Businesses may also require to finance the capital expenditure from time to time.

Accounts payable shows that the purchases that are unpaid by the organization . The accounts payable is the most important portion of the current liabilities of the company’s financial statements.

The business rules states that short term obligations shall be fulfilled out by current assets.

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