On top of a hill, a rocket is launched from a distance 80 feet above a lake. The rocket will fall into the lake after its engine burns out. The rocket's height, h, in feet above the surface of the lake, is given by the equation, h = -16t^2 + 64t + 80, where t is time in seconds. The maximum height of the rocket is _______ feet

Answers

Answer 1
The maximum height is 144 feet.

The maximum height is the y-coordinate of the vertex.  To find the vertex, we first use x = -b/2a.  For our information, that is x=-64/2(-16) = -64/-32 = 2.

Now we substitute this into the equation:
y = -16(2²) + 64(2) + 80 = -64 + 128 + 80 = 144

Related Questions

226in is equal to how many ft and in (show work

Answers

226 in 1ft
---------- X --------- = 18ft and 10 in
1 12in

What is the quotient? n+3/2n-6 divide n+3 /3n-9

Answers

(n+3)/(2n-6):(n+3)/(3n-9)=(n+3)/(2(n-3))×(3(n-3))/(n+3)=3/2
ANSWER
The quotient simplifies to
[tex] \frac{3}{2} [/tex]



EXPLANATION


We want to find the quotient:

[tex] \frac{n + 3}{2n - 6} \div \frac{n + 3}{3n - 9} [/tex]


We need to multiply the first fraction by the reciprocal of the second fraction to obtain,

[tex]\Rightarrow \frac{n + 3}{2n - 6} \div \frac{n + 3}{3n - 9} = \frac{n + 3}{2n - 6} \times \frac{3n - 9}{n + 3} [/tex]



We now factor to obtain,

[tex]\Rightarrow\frac{n + 3}{2n - 6} \div \frac{n + 3}{3n - 9} = \frac{n + 3}{2(n - 3)} \times \frac{3(n - 3)}{n + 3} [/tex]


We cancel out common factors to obtain,



[tex] \Rightarrow\frac{n + 3}{2n - 6} \div \frac{n + 3}{3n - 9} = \frac{1}{2} \times \frac{3}{1} [/tex]


This finally gives us,

[tex] \frac{n + 3}{2n - 6} \div \frac{n + 3}{3n - 9} = \frac{3}{2} [/tex]

The area of a sector of a circle is given by the equation A=3.14r^2S/360, where r us the radius of the circle and S is the angle measure of the sector. If Mia solved this equation for S, which of the following equations did she write?

Answers

A=3.14r²s/360
to solve for s we proceed as follows:
multiply both sides by 360, this will give us:
360A=3.14r²S
next we divide both sides by 3.14r²
360A/(3.14r²)=(3.14r²S)/(3.14r²)
This will give us:
S=360A/(3.14r²)

Just took the quiz.

The answer is 360A / pi r^2

5 hours 8 min - 3 hours 12 min

Answers

Hello,

Here is your answer:

The proper answer is "2.68".

First translate the question:

5 hours and 8 min=5.8

3 hours 12 min=3.12

Now subtract:

5.8-3.12=2.68

Your answer is 2.68!

If you need anymore help feel free to ask me!

Hop this helps!

A map of Scotland is drawn to scale of 1:325,000. 
how many CM on the map would show 65KM? 

Answers

1:325,000 means 1 cm shows 325,000 cm, 
converted to metres 1 cm shows 3250 metres 
converted to km 1 cm shows 3.25 km 

so to show 65 km 
65/3.25 which gives 20 cm 
Final answer:

On a map of Scotland, drawn to the scale of 1:325,000, 65 KM of real-world distance will be represented by 20 cm on the map.

Explanation:

The question pertains to the scale existing on a map. A map scale enables us to convert the measurements on the map into the corresponding real-world distances. Here, we have a map of Scotland that is drawn to the scale of 1:325,000. This signifies that 1 cm on the map equates to 325,000 cm in reality.

To ascertain how many cm on the map would represent 65 KM, we first need to convert 65 KM into cm. As we know, 1 KM is equal to 100,000 cm. Therefore, 65 KM will be equivalent to 65 * 100,000 = 6,500,000 cm.

Now, we divide the real-world cm (6,500,000 cm) by the scale (325,000), which gives us the cm on the map. Thus, 6,500,000 cm / 325,000 = 20 cm

So, on this map, 65 KM will be denoted by 20 cm.

Learn more about Map Scale here:

https://brainly.com/question/24486949

#SPJ11

Round 14.376 to the nearest dollar

Answers

$14.38 is going to be the correct answer!!!! Have a nice day!
$14 if you are rounding to the nearest dollar 
your answer sheet is if it is over 5 you round it up. if it is under 5 it is rounded down

A charity organization had a fundraiser where each ticket was sold for a fixed price of $ 70. They had to sell a few tickets just to cover necessary production costs. After selling 10 tickets, they were still at a net loss of $800, (due to the production costs). Let (n)P, denote the net profit from the fundraiser P (measured in dollars) as a function of the number of tickets sold n. Write the function's formula.

Answers

P(n)=66n-1200
12000+1200=13200,
13200/200+66,
it asks net profit, so you need to minus $1200 to find it.

Answer: The function's formula would be

[tex]P(n)=Revenue-Cost\\\\P(n)=70n-1500[/tex]

Step-by-step explanation:

Since we have given that

Price of each ticket = $70

Number of tickets = 10

Total cost price of tickets would be

[tex]70\times 10\\\\=\$700[/tex]

After selling 10 tickets, there is a net loss of $800.

So, Total product cost would be

[tex]\$700+\$800\\\\=\$1500[/tex]

We need to write the function's formula for the number of tickets sold 'n'.

So, the function's formula would be

[tex]P(n)=Revenue-Cost\\\\P(n)=70n-1500[/tex]

What kind of angle is formed by the tangent to a circle and a radius of that circle?

Answers

A tangent is always perpendicular to the radius at the point of tangency.

A right angle.

Answer: 90° which is a right angle

Step-by-step explanation:

The tangent to a circle is perpendicular to the radius at the point of tangency. The angle between a radius and tangent is 90°>

Suppose (b − c)d = 0, where b and c and m × n matrices and d is invertible. show that b =
c.

Answers

If [tex]\mathbf D[/tex] is invertible, then

[tex](\mathbf B-\mathbf C)\mathbf D=\mathbf 0\implies(\mathbf B-\mathbf C)(\mathbf D\mathbf D^{-1})=\mathbf0\mathbf D^{-1}[/tex]
[tex]\implies(\mathbf B-\mathbf C)\mathbf I=\mathbf 0[/tex]
[tex]\implies\mathbf B-\mathbf C=\mathbf 0[/tex]
[tex]\implies\mathbf B+(-\mathbf C+\mathbf C)=\mathbf 0+\mathbf C[/tex]
[tex]\implies\mathbf B+\mathbf0=\mathbf C[/tex]
[tex]\implies\mathbf B=\mathbf C[/tex]

Divide 49 in the ratio 4:2:1

Answers

Hey there! :D

When you do a ratio, add the numbers together.

4+2+1= 7

49/7=7

7*4= 28

7*2= 14

7*1=7

28:14:7 <== the ratio 

I hope this helps!
~kaikers

To divide 49 in the ratio of 4:2:1, find the total quotient of the ratio parts, divide 49 by this total, and then multiply each part of the ratio by the result.

The ratio of the coefficients is 4:2:1, which can be simplified to 2:1:1. To divide 49 in this ratio, follow these steps:

Find the total quotient of the ratio parts: 4 + 2 + 1 = 7.Divide 49 by the total parts: 49 ÷ 7 = 7.Multiply each part of the ratio by 7 to get the divided amounts: 2 x 7 = 14, 1 x 7 = 7.

What words can you use to read 14.895

Answers

fourteen point eight hundred ninety five thousandths
Fourteen point, eight hundred, ninety five.

determine the range of possible side lengths of the third side AB of triangle ABC from gretaest to least

Answers

BC+AC>AB>Absolute value (BC-AC)
Greatest        Least    

each day last week, Ms. wilson walked3/4 mile. what is the total distance, in miles, that Ms. Wilson walked in 4 days?

Answers

Hey there! :D

Since she walks 3/4 a mile a day, we can multiply that by 4.

3/4= .75

4*.75= 3

She walked 3 miles in 4 days.

I hope this helps!
~kaikers

Taking into account the rule of three, the total distance that Ms. Wilson walked in 4 days is 3 miles.

Rule of three

In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.  

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied.

To solve a direct rule of three, the following formula must be followed, being a, b and c known data and x the variable to be calculated:

a ⇒ b

c ⇒ x

So: [tex]x=\frac{cxb}{a}[/tex]

Total distance that Ms. Wilson walked

You can applied the following rule of three: if each day last week, Ms. Wilson walked [tex]\frac{3}{4}[/tex] mile, in 4 days what is the total distance that Ms. Wilson walked?

[tex]total distance=\frac{4 daysx\frac{3}{4} miles }{1 day}[/tex]

total distance= 3 miles

Finally, the total distance that Ms. Wilson walked in 4 days is 3 miles.

Learn more about the rule of three with this example:

brainly.com/question/12482948?referrer=searchResults

The current area of the city park is represented by the expression 11x2 + 4x + 6. The city will expand the park this summer by a factor of 5x − 3. If one-fourth of the new park is to be wooded, which expression represents the new area of the park that is not wooded?

Answers

Final answer:

The new area of the park that will not be wooded after expansion is represented by the expression 41.25x³ - 24.75x² + 15x - 13.5.

Explanation:

The current area of the park is given by the polynomial 11x² + 4x + 6. If the city expands the park by a factor of 5x - 3, the total new area of the park becomes (11x² + 4x + 6) * (5x - 3), which represents the expansion of the park.

However, the question asks for the part of the park that will not be wooded, which we know is three-fourths of the total park. So, we multiply our expanded park equation by 3/4 (or 0.75) to find this area:

(3/4) * [(11x² + 4x + 6) * (5x - 3)]

Using distributive property, we can further expand the expression:

=(3/4) * [(55x³ - 33x² + 20x - 18)]

So the area that will not be wooded after expansion is expressed as 41.25x³ - 24.75x² + 15x - 13.5.

Learn more about Polynomial Expansion here:

https://brainly.com/question/13793580

#SPJ12

Given that the current area of the park is represented by a second degree equation, the expansion of the park will proportionally increase its area. The new area after expansion will be the product of the current area and the expansion factor, so we will need to multiply our current area, which is given by 11x^2 + 4x + 6, by the expansion factor, which is 5x - 3.

This will yield: (5x - 3)*(11x^2 + 4x + 6) as the total new area of the park.

Now that we've calculate the total new area of the park, we need to find out the area of the park that will be wooded and the area that will not be. We know that the wooded area will be one-fourth of the total area, so we can find this by dividing our total area by 4.

This yields: (5x - 3)*(11x^2 + 4x + 6) / 4 as the wooded area of the park.

After discovering the area that will be wooded, we can find the non-wooded area by subtracting the wooded area from the total area of the park.

Therefore, the new area of the park that is not wooded is given by:

3*(5x - 3)*(11x^2 + 4x + 6) / 4

Learn more about Algebraic Expression here:

https://brainly.com/question/953809

#SPJ12

What is the median of the following set?

28, 45, 12, 34, 36, 45, 19, 20

28
34
31
35

Answers

Answer:

Median = 31

Step-by-step explanation:

The median is the middle number which comes after arranging the set in ascending order.

Here, the given data is: 28, 45, 12, 34, 36, 45, 19, 20

The data arranged in the ascending order is as follows:

12, 19, 20, 28, 34, 36, 45, 45

Since the number of terms is even, we have two middle numbers, viz.,

28 and 34

The median would be the average of these two.

Therefore, Median = [tex]$ \frac{28 + 34}{2} $[/tex]

= 31

The answer is 31.

The median of the set 28, 45, 12, 34, 36, 45, 19, 20 is 31.

To find the median of a set of numbers, you should first arrange the numbers in ascending order and then locate the middle number.

If there is an even number of terms, the median is the average of the two middle numbers. Let's do that with the given set: 28, 45, 12, 34, 36, 45, 19, 20.

Sort the numbers: 12, 19, 20, 28, 34, 36, 45, 45.Find the middle: Since there are 8 numbers (an even amount), the median will be the average of the 4th and 5th numbers.Calculate the median: (28 + 34) / 2 = 31.

Therefore, the median of the given set is 31.

Which metric unit of measurement is best to use to describe the height of a tree
A kilometers
B millimeters
C liters
D meters

Answers

The best measurement would be D. Metres.

The endpoints of sa020-1.jpg are A(9, 4) and B(5, – 4). The endpoints of its image after a dilation are sa020-2.jpg and sa020-3.jpg. Find the scale factor.

Answers

Answer:
The scale factor is (√10) / (4)

Explanation:
The complete question as well as the rule for the distance between two points are shown in the attached image.

To get the scale factor, we will follow these steps:
1- Length of AB:
AB = √(5-9)²+(-4-4)² 
AB = √80
AB = 4√5 units

2- Length of A'B':
A'B' = √(5-6)²+(-4-3)²
A'B' = √50
A'B' = 5√2

3- getting the scale factor:
A'B' = k AB where k is the scale factor
5√2 = k * 4√5
k = (√10) / (4)

Hope this helps :)


Faelyn noticed that she does not have a common factor. Which accurately describes what Faelyn should do next?

Faelyn should realize that her work shows that the polynomial is prime.

Faelyn should go back and regroup the terms in Step 1 as (6x4 + 3x2) – (8x2 + 4).

In Step 2, Faelyn should factor only 2x out of the first expression.

Faelyn should factor out a negative from one of the groups so the binomials will be the same.

Answers

Answer:

  (b)  Faelyn should go back and regroup the terms in Step 1 as (6x⁴ + 3x²) – (8x² + 4)

Step-by-step explanation:

You want to know the next step in factoring 6x⁴ -5x² -4 after noticing the terms have no common factor.

Trinomial

Faelyn can notice the variable terms are powers of x², meaning this expression is a quadratic in x². As such, it may be able to be factored using the same strategies available for factoring quadratic expressions.

One such strategy is to rewrite the middle term as a sum, then group the terms and factor each group. Faelyn has apparently noticed that she can rewrite -5x² as 3x² -8x². This means ...

Faelyn should go back and regroup the terms in Step 1 as (6x⁴ + 3x²) – (8x² + 4), choice B.

__

Additional comment

The values used to rewrite the x² term are factors of (6)(-4) = -24 that have a sum of -5. Those values are +3 and -8.

Once Faelyn has regrouped the terms, she can factor further as ...

  (6x⁴ + 3x²) – (8x² + 4) = 3x²(2x² +1) -4(2x² +1) = (3x² -4)(2x² +1)

These two binomial factors are prime.

Which sum is equal to  7/12?
A. 1/12 + 1/12 + 1/12 +1/12 + 1/12 + 1/12 +1/12




B. 1/7 + 1/7 + 1/7 +1/7 +1/7 + 1/7 + 1/7




C. 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12




D. 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 +


Answers

The answer is A.

There are 7 1/12ths, so it is equal to 7/12

Answer:

The answer is A.

Step-by-step explanation:

There are 7 1/12ths, so it is equal to 7/12

make w the subject of the formula y-aw=2w-1

Answers

y-aw=2w-1
y+1=2w+aw
y+1=w(2+a)
(y+1)/(a+2)=w

Answer: w= (y+1)/(a+2)

Answer:

(y+1)\div (a+2)

Step-by-step explanation:

y-aw=2w-1

y+1=2w+aw

y+1=w(2+a)

(y+1)/(a+2)=w

Answer: w= (y+1)\div (a+2)

Solve the equation. 9 = –d + 17

Answers

Answer:

  d = 8

Step-by-step explanation:

Since the variable appears on only one side of the equation, all terms not containing the variable can be eliminated from that side by adding their opposite to both sides of the equation. That is, add -17 to both sides of the equation:

  9 -17 = -d + 17 - 17

  -8 = -d . . . . . simplify

Now, the equation can be multiplied by a number that will give "d" on one side of the equation. Here, that number is -1. Multiply both sides of the equation by -1:

  (-1)(-8) = (-1)(-d)

  8 = d . . . . . simplify

The solution is d = 8.

Answer:

8

Step-by-step explanation:

[tex]9= -d +17\\9-17= -d +17- 17 \\-8/-1 = -d/-1\\8 = d[/tex]

Paysly is studying a mosquito with a mass of 2.5×10−62.5×10-6 kilograms and a housefly with a mass of 2×10−52×10-5 kilograms. Which statement is true?

The mosquito is 88 times the mass of the housefly.


The housefly is 88 times the mass of the mosquito.


The housefly is 1010 times the mass of the mosquito.


The mosquito is 1010 times the mass of the housefly.

Answers

The housefly is 8 times the mass of the mosquito.

In standard form, the mass of the mosquito is given by 0.0000025.  The mass of the housefly is given by 0.00002.  Since it is a larger number, we will divide this by the mass of the mosquito to find how many times bigger it is:

0.00002/0.0000025 = 8

Answer: The house fly is 8 times the mass of the mosquitio

what is the equation of the line that has a slope of 4/5 and a y-intercept of -1?

Answers

Answer:

y = 4/5x -1

Step-by-step explanation:

The slope-intercept form of the equation of a line is ...

... y = mx + b . . . . . . for slope m and y-intercept b

You have m = 4/5 and b = -1. The equation of the line is found by putting these values in their places in the form above.

... y = 4/5x -1

The equation of the line with a slope of 4/5 and a y-intercept of -1 is y = (4/5)x - 1.

The equation of a line in slope-intercept form is given by y = mx + b, where m represents the slope of the line and b represents the y-intercept.

Given a slope of 4/5 and a y-intercept of -1, we can substitute these values directly into the slope-intercept form equation to get the equation of the line.

Hence, the equation for this line is y = (4/5)x - 1.

Two parrallel lines may have 1 intersection point.
A.) True
B.) False

Answers

b. False

parallel never intersects  
////////It's false.////////

AB ≅ BC and AD ≅ CD What additional information would make it immediately possible to prove that triangles AXB and CXB are congruent using the HL theorem? What additional information would make it immediately possible to prove that triangles AXD and CXD are congruent using the SSS congruence theorem?

Answers

Answer:

C, B

Step-by-step explanation:

Answer:C B

Step-by-step explanation:

Of the 180 days of school last year, Grace was absent 15 days. What percent of the day was she absent?

Answers

to find the answer you take the days of the school and divide it by days absent so it is 15 divided by 180 witch is the answer is rounded to 8%
180 days represents 100%
15 days represents. ?%

Cross multiply because they are in proportion

?%= 15•100/180= 8.333%

About 8 days she was absent

dan saved $463 over the 12 weeks of summer break. He saved $297 of it during the last 4 weeks.How much did he save during the first 8 weeks?

Answers

196 dollars is your answer.
So you subtract 297 from. 463, which gives you 196.

Hope this helps! :)

In order to survive, organisms must maintain stable conditions in their bodies, even though their external environments are always changing.

For example, humans need to maintain an internal temperature around 37°C. Blood needs to have a pH around 7.4 and an oxygen saturation close to 100%.

What needs to happen in order to maintain these conditions?

A) Organ systems must interact with one another.
B) Organisms must be at rest.
C) Genes must be altered each time cells replicate.
D) All of these.

Answers

For humans (and other organisms) to maintain a constant internal temperature, pH, etc., we have to maintain homeostasis. The way our bodies maintain homeostasis is through our organ systems; they carry out processes which ensure we remain the same. Their interaction is vital to this process.

Answer:
A) Organ systems must interact with one another.

Organ systems must interact with one another.

What is the expression of one less than the quotient of four and a number x

Answers

The expression is: (4/x) -1
An expression of the word problem “one less than the quotient of four and a number x” would be (4/x)-1.
I hope this helped! :-)

Which of the following has a value between 10/3 and 11/3 ? A- 3 1/2 B-3 1/4 C- 3 3/4 D- 3 1/8

Answers

The answer is D-3 1/8 because 10/3 equals 3 1/3 and 11/3 equals 3 2/3.

Answer:

A  IS CORRECT

Step-by-step explanation:

GOOGLE I SEARCH UP THE ANSWER

Other Questions
An ideal monatomic gas at 300 k expands adiabatically and reversibly to twice its volume. what is its final temperature? Write an original prose composition using phrases, clauses, verbals, and various sentence types Verify the identity. tan x plus pi divided by two = -cot x Six-year-old blair liked going to school right up until her first-grade teacher, ms. hanemayer, took maternity leave. the substitute teacher, old mrs. snarly, was strict and scolded blair on several occasions, making her cry. on one saturday morning as blair was helping her father with grocery shopping, she suddenly came face to face with old mrs. snarly. blair instantly burst into tears. blair's crying at just the sight of mrs. snarly is an example of: How did Lincoln respond to the capture of those cities All of the following contributed to the collapse of the stock market in 1929 exceptQuestion 1 options:investors bought stocks on margin.businessmen started companies called "investment trusts" that bought stock on credit.investors poured money into risky investments.stock prices reflected the real value of companies.How were the American people and businesses affected by the Depression?Question 2 options:All of the aboveFamilies had little cash to buy goods.Businesses laid off workers or closed down.People lost their savings due to bank failures. How should a cover letter begin?A.With an informal greeting like "Hey, there!" B.With the hiring manager's nameC. With the name of the positionD. With "To Whom it May Concern" A____________________ resting heart rate indicates a strong, high level of cardiovascular health.highlow180 bpm150 bpm I think it is 180 which question cannot be tested with a scientific investigation? A galaxy is likely to be a collection of which of the following 1. Universe and interstellar matter2. Stars and interstellar matter 3. Clusters and constellations***4 stars and clusters Read this passage from "The Light of Gandhi's Lamp," in which Hilary Kromberg Inglis describes going to the police station in South Africa where her sister is being detained. I imagined what CR Swart Square Police Station would look like. Would it be like John Vorster Square Police Station in Johannesburg, where Neil Aggett had died in detentioncommitted suicide, authorities claimed, by hanging himself? How does Inglis's decision to use quotation marks around certain words affect the text? It helps convey the idea that, during apartheid, many South Africans who disapproved of their government's racist policies did not trust the police to follow the law or to be honest about their actions. It helps suggest that, like others who protested the apartheid government at this time, Inglis believed that these deaths were not real and that the alleged victims had been deported due to their political beliefs. It helps show that, while the apartheid system was wrong, Inglis understood that not all of those who protested the system were noble or righteous or truly devoted to the cause of equality. It helps indicate that, as a white South African, Inglis was uniquely aware of the hypocrisy and lies that the authorities attempted to pass off as the truth during apartheid. I need help!!!! Please if you get it right i will mark you brainliest! An acidic substance a) releases OH- ionsb) releases OH+ ionsc) releases H- ions d) releases H+ ions Prism A is similar to Prism B. The volume of Prism A is 2080 cm.What is the volume of Prism B?260 cm520 cm1040 cm16,640 cm Continue the following pattern; describe the eighth figure in this pattern In what way are Paul Robenson, Sonia Sotomayor, Richard Aoki, adn wilma Mankiller alike?A. They all represent stories of positive racial identityB. They were all leaders of black studie groupsC. They are all American Indians.D. They all started ethnic studies programs in their home towns. Write the expression-3x2+2y2+5xy-2y+5x2-3y2 in simplest form A how many terms are in the simplified expression? B how many terms in the simplified expression negative During which phase of meiosis do tetrads line up along the metaphase plate (1) The nation's energy use is largely dependent on fossil fuels. (2) These fuels are nonrenewable resources, and they cause pollution. (3) We cannot continue our reliance on a fuel that will eventually run out. (4) Thus, we must find other ways to sustain our energy demands. (5) Pursuing alternative fuel sources is the key to solving our energy crisis. (6) Currently, about 1 percent of energy in the United States is produced by the sun, and solar energy has the potential to become a more widely used energy source. (7) Through different technologies, such as solar cells, scientists have learned to use the suns radiation to create electricity. (8) Solar energy is both inexhaustible and clean. (9) The major limit to this alternative source is that equipment is expensive. (10) Developing a cost-effective way to harness the power of the sun will be a significant development in solving our energy crisis. Which sentence is the author's thesis statement? sentence 1 sentence 2 sentence 5 sentence 6 Suppose you have two credit cards. The first has a balance of $410 and a credit limit of $1,000. The second has a balance of $510 and a credit limit of $1,000. What is your overall credit utilization?