# algebra II-URGENT

43,917 results, page 17

### physics(please help...very urgent.....)

A ball is hit at an angle of 36 degrees to the horizontal from 14 feet above the ground. If it hits the ground 26 feet away (in horizontal distance), what was the initial velocity? Assume there is no air resistance. i have posted the same question earlier and i got some steps ...

### AP CHEM-URGENT PLEASE

at 25 degrees C liquid A has a vapor pressure of 100.0 torr, while liquid B has a vapor pressure of 200.0 torr. The heat of vaporization of liquid A is 32.0 kJ/mol and that of liquid b is 18.0 kJ/mol. At what celsius temperature will A and B have the same temperature. I haven'...

### math urgent

Solve the inequality. 8. c + 6 < –20 (1 point) c < –26 c < –14 c < 26 c < 14 9. ≥ –3 (1 point) d ≥ –16 d ≥ 39 d ≥ 10 d ≥ –39 10. –3p > –48 (1 point) p < 16 p > –51 p < –16 p > 16

### Science help! URGENT. Check answers

1. True or False? A model train traveling at a constant speed around a circular track has a constant velocity. (False) 2.Which of the following would be affected if a soaring eagle changed direction but remained at a constant speed? acceleration only velocity only acceleration...

### maths (variation)

different questions pls! Very urgent! 1) the force E needed to make a machine pull,a load is partly constant and partly varies as the load to be pulled itself.when the load is 20g,the force needed is 1.4n,where as the force needed for 30g load is 2N. Find the: A)law connecting...

### VERY URGENT math question

Owen was stacking popcorn balls on a table. He put sixteen balls on the table. He added three more layers. Each layer had four fewer balls than the previous layer. How many popcorn balls in all did Owen put on the table?

### MATH PLEESE HELP ITS URGENT

There are 3 gardens below. They are all joined. Garden A and C are are perfect squares. A is 121 m2 and C is 169 m2. What is the area of garden B? Label all the dimensions and then find the perimeter of the entire three gardens that are joined together? All I know is that ...

### 8th grade math URGENT

1 1/4 miles in 2 min and 4 seconds, or 1 3/16 miles in 1 min and 55 sec. Which is greater? $1.60 for 5 min or $19.50 for 1 hour. Which is greater? Look for a pattern in the expressions shown below. Use the pattern to write an expression for the sum of the whole numbers from 1 ...

### Physics Urgent!!

a bungee jumper is falling at a velocity of 2m/s [down] when the bungee cord just starts to stretch. after the cord stretches for 2.5s, the velocity is 11m [down]. assume that the acceleration is at constant. a) what is the acceleration of the jumper? b) what is the total time...

### Chemistry

Rank the following solutions in order of increasing acidity. 1 M phenol 1 M boric acid 1 M cyanic acid 1 M formic acid 1 M hydrochloric acid 2. Rank the following solutions in order of increasing basicity. 1 M C3H5O3Na 1 M KF 1 M KOCN 1 M KOCl All I know is that HCl is the ...

### URGENT physics

The escape velocity of a bullet from the surface of planet Y is 1695 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.37 times that of Y, and its radius is 0.887 times the radius of Y (in m/s).

### Chemistry-Urgent

The partial pressure of CO2 inside a bottle of soft drink is 4.0 atm at 25°C. The solubility of CO2 is 0.12 mol/L. When the bottle is opened, the partial pressure drops to 3.0 ✕ 10-4 atm. What is the solubility of CO2 in the open drink? Express your answer in grams per liter.

### I NEED URGENT HELP!!!

A ship leaves port at 1:00 P.M. and sails in the direction N36°W at a rate of 25 mi/hr. Another ship leaves port at 1:30 P.M. and sails in the direction N54°E at a rate of 16 mi/hr. (a) Approximately how far apart are the ships at 3:00 P.M.? (Round your answer to the nearest...

### Chemistry (URGENT)

Balance the following equations. 3. C12H22O11 + O2 = CO2 + H2O Answer: C12H22O11 + 12 O2 = 12 CO2 + 11 H2O 8. CH3OH + O2 = CO2 + H2O Answer: 2 CH3OH + 3 O2 = 2 CO2 + 4 H2O I balanced all the others just fine. But I seem to be having trouble with these two. Can someone show me ...

### algebra 1

find a value for k that will make 4x^2 + 6.4x + k a perfect square. describe the procedure that you used which requires algebra. I have the answer and it is k = 1.6^2 or 2.56 i just don't get how we got there

### Math (Algebra/Pre-Algebra)

What is the 23rd term in the arithmetic sequence: 11, 14, 17, 20...? All I need is the formula to find the it because I have to show work. Thanks.

### algebra

need help with 2 questions first It has been a long time since I did algebra and don't rememeber how to work the problems 1/5(x+1) + 2/5(x-1) = 3/10 2nd problem 0.1(2x-1) + 0.02(4x + 4) = 0.05x

### Algebra

Hello, I am having a bit of trouble with two Algebra questions 1. Solve x= 8x - over the domain [0, 2, 4, 6] 2. For what values of a is the equation /a/ =5 true? Thanks in advance.

### Algebra

First, I really stink @ Algebra. How do combination of signed numbers work? I keeping getting 6 but for some reason I don't think its right. -1-(-6+-1) -1-6+1 -5+1=6

### algebra 2

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)

### algebra 2

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)

### ALGEBRA

CHLOE HAS A BIRTHDAY PARTY.THE VILLAGE HALL COSTS £20 PER HOUR (H). THERE IS ALSO A STANDING CHARGE OF £12. WRITE THIS AS AN EXPRESSION IN ALGEBRA?

### Algebra readiness ( pre algebra)

1.) simplify: (y3)(y3) A y1 B y7 C y12 D y43 2.) y6/y2 A y8 B y4 C y3 D y1 3.) convert to fraction 5-3 A 1/5 B 1/15 C 1/25 D 1/125 4.) 150=? A 0 B 1 C 15 D 1/15 5.) Select all the expressions that are equivalent to y4. A (y2)(y2) B y6/y6 C y0 D y9/y9 E (y4)(y1)

### Powerpoint (URGENT)

I need to do a powerpoint on a career. I have to find information on the web about that career. One of the slide requirements was to include a bibliography. So, I'm wondering what does a bibliography for a powerpoint include? Do I need to include the sources I used to gather ...

### vocab urgent

i need 3 more sentences using circuitous please help i really need it! Thank you for using the Jiskha Homework Help Board but we do not DO the work for you! Use any good dictionary for the definition. Use any good Thesaurus for a synonym and/or antonym. When you substitute a ...

### Grade 8 Math

URGENT HELP!Squares into Primes Some primes can be expressed as the sum of two squares, as in 13=2^2+3^2; some can't:7=/=a^2+b^2. Other primes can be c^2+2e^2 like 11=3^2+2*1^2; still others are f^2+3 g^2, like 31=2^2+ 3* 3^2. Find all the primes less than 100 that can be each...

### algebra 1 help

fin the complement and the supplemnt of the angel measure 1) 130 complement-40 suplement-50 or vice versa if anyone can help me with some algebra work it would be greatly appreciated i am im algebra 1 and still on the second quarter and have until november to finsh thank you i...

### VERY URGENT!!!

Large numbers of people have moved from rural areas to urban areas in Asia, Africa, and Latin America because (1 point) they want to live life at a slower pace. there are often few jobs and a shortage of land to farm in the countryside. conditions in large cities are very ...

### statistics

I have done an entire project based on football scores from a certain team over the last 3 years and I'm not sure what information I can get from my answers. Ive done a frequency distribution table, Ogive, Histogram,cumulative frequency table, frequency polygon, etc. and I don...

### maths(urgent)thanks.

a parabola with turning point at (1,-2) and passing through the origin.find the equation of this parabola. how do i do this? can someone please show me how to solve it step by step?thanks! You know that at x = 0 the function is zero. Because the turning point is at x = 1 must ...

### english/usgov URGENT

can you guys help me write a conclusion for this and also help me elaborate my essay better. I've worked so hard and it's due tomorrow Politicians can't agree on how to create more jobs and this is a major problem. The U.S. economy is in trouble because it has more debt than ...

### Physics Urgent!!!!! I really need help with this

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...

### PSYCHOLOGY HELP PLEASE!

Mr. Buss is a business executive. He has been dedicated to the company for ten years and worked his way up the corporate ladder to the position of third vice president. He is the first to arrive and the last to leave each day. He has no patience with those who might waste his ...

### Urgent help Maths Ms sue

Use binomial series to find the Taylor series about 0 for the function f(x)=(1+x)^-3/5 giving all terms up to the one in x^4. Then use this series and Taylor series for sin x to find the quartic Taylor polynomial about 0 for the function f(x)= sinx/(1+x)^3/5

### Urgent geometry help

What would be the converse of the ihop saying " come hungry leave happy" This was my if then statement: if you come hungry then you will leave happy. And for my converse I had: if you leave happy then you came hungry. ***is this right? Is it okay to to not put the "will" in ...

### Spanish Help?? (URGENT)

Alright for an Spanish assignment I must make skit that talks about family. And I need to roleplay this skit infront of the class. The problem is that in the skit I must teach the class about family members ands their relationship. I need to do this in a group of 5. Does ...

### math..urgent pleasehelp :(

the purchasing power (in dollars) of an annual amount of A dollars after t years of 5% inflation decays according to P= Ae^-0.05t a) how long will it be before a pension of $60,000 per year has a purchasing power of $30,000 b) how much pension A would be needed so that the ...

### pre-calculus urgent

Please help me here as well to clarify more my understanding. Let a1, a2, a3, . . . be a geometric sequence with initial term a and common ratio r. Show that a1^2, a2^2, a3^2, . . . is also a geometric sequence by finding its common ratio. Given that the ratio for a1, a2, a3...

### account (urgent!!pls help)

accounting question [prepare journal entries for the year end adjustment] A fire broke out in the office during the year. the insurance company agreed to pay compensation of $3000 to the company in December 2009.No entries for this compensation were made at the year end.This ...

### Math: Pre-calculus

A rancher wants to build a rectangular pen with an area of 180 . Let W be the width of the pen and L be the length of the pen. a) Find an equation for the perimeter P in terms of W and L . b) Use the given area to write an equation that relates W and L . c) Find the pen ...

### Biochemistry

How would you prepare 250ml of 0.2M sodium phosphate buffer of PH 6.4 if the following chemicals are available :dibasic sodium phosphate,monobasic sodium phosphate and 0.129M solution of NaOH. Assume that the pka1 pka2 pka3 of phosphoric acid are 2.12, 6.8 and 12.3 ...

### Chemistry(Urgent, please respond, thanks!!)

1) For the reaction system, 2 SO2(g) + O2(g) = 2 SO3(g), Kc has a value of 4.62 at 450.0 K (Kelvin). A system, at equilibrium has the following concentrations: (SO3) = 0.254 M; (O2) = 0.00855 M. What is the equilibrium concentration of SO2? Is set this up as 4.62=(SO3)^2 / (...

### chemistry

URGENT: If 2.24g of salicylic acid is reacted with 61mL methanol, what is the maximum mass of product that could be formed? The density of methanol is 0.791g/mL. Do I just multiply 61ml by 0.791g/ml to get 48.251 g methanol then multiply this by the 2.24g of salicylic acid?

### urgent mc biology

After the blood in is the left heart you would next find it (a)entering the lungs. (b)entering the tissues, like muscles. (c)entering the right heart. (d)leaving the lungs. (e)leaving the tissues, like the muscles. Please help

### logical statements-urgent

I have to come up with a logical statement when making a truth table that has these conditions: The statement is always false if both P and Q are true. Otherwise, the statement is true if Q is true but R is not true. so far I have ~(P&Q) which makes it false if both P and Q ...

### math

triangle ABC has vertices A(3,4), B(4,-3) and C(-4,-1). a. draw a sketch of the triangle b. draw the altitude from vertex A c. find the slope of side BC which is =-1/4 d. find the slope of the altitude from A which is 4 e. find the equation of the line that contains this ...

### Algebra

I need help on one particular part of algebra because i forgot what my teacher said! Here is the question: Directions: Find the x- intercept of the graph of the equation. 1. x+ y= 5

### algebra 2

what is the answer to algebra with pizzazz page 100; what should you say if you see a tall, wrought-iron tower in paris, france? there are 24 blanks

### Algebra

Which resource provides instructions and practice related to the content in the online textbook. A. TI - Nspire *** B. Sample work C. Power Algebra D. Teachlet tutorial

### Algebra 2

What's the answer to Algebra With Pizzazz B-50, Page 60???

### Algebra

Algebra - Substitution Question? A+B+C=1 A+C= -1/2 A-B+C= -7 What are the values of A, B, and C?

### algebra

Hi, how can I solve this equation using algebra? y= 9x+50, many thanks

### College algebra

What is the fundamental theorem of algebra for x^6-64?

### Algebra

Will you explain the concept of "i" in algebra? Problem: 4+2i/4-2i

### Algebra

How do you solve x/a - 1 = y/b for y? Algebra question I'm stuck on. Thanks!

### Algebra

I need help with some Algebra! Can someone help?

### algebra

I need help with my algebra with pizzazz page 22

### algebra

show this algebra equation on the graph 4x-6y=12 4x+3y=24

### Algebra

What is the distinct letter in the word algebra?

### Algebra readiness ( pre algebra)

what is the solution to q+ (-9) =12?

### maths urgent

Plz help me solve these sums i will be great full 1.How many non congruent right triangles with positive integer leg lengths have areas that are numerically equal to 3 times their perimeters 2.A triangle with side lengths in the ratio 3:4:5 is inscribed in a circle of radius 3...

### Inter. Algebra

square root sign 2x+3 - square root sign x-2 =2 In my head, I worked it as x=3. I did that because only sqr roots that are rational integers can be subtracted to give a whole number. Now, analytic method. I have no idea, I don't see a simple method in ordinary algebra. how do ...

### Physics URGENT

A tennis ball with a velocity of +10.7m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of -5.9 m/s (to the left). If the ball is in contact with the wall for 0.009s, what is the average ...

### 5th Grade Math - Urgent Part II

Sorry my question got cut off. 2 to the 6th power times 5 to the 6th power equals 1,000,000. Is there another number that has the prime factorization 2 to the 6th power times 5 to the 6th power? Are you saying the other number that has the same factorization is 64?

### Physics (Urgent Please!)

Two parallel wires conduct equal currents in the same direction. (a) At a point in the plane of the wires midway between them, do the individual fields of the wires cancel or reinforce each other? (b) At a point far away from the wires, do their individual fields tend to ...

### math urgent

a motorboat takes 4 hrs to travel 256 miles going upstream. the return trip takes 2 hours going down stream. what is the rate of the boat in still water and what is the rate current. rate of the boat in still water=mi/hr rate of the current=mi/hr

### calc urgent

Note that f is continuous on (−∞, 6) and (6, ∞). For the function to be continuous on (−∞, ∞), we need to ensure that as x approaches 6, the left and right limits match. First we find the left limit. lim x→6− f(x) = lim x→6...

### maths pls help urgent

A supermarket had an equal number of bottles of shampoo and conditioner. After selling 82 bottles of shampoo and 178 bottles of conditioner, the no. of bottles of conditioner was 1/5 of the bottles of shampoo left. How many bottles of shampoo were left?

### calculus urgent help please!

company operates two plants which manufacture the same item and whose total cost functions are C_1=9.5+0.04q_1^(2)and C_2=3.4+0.06q_2^(2), where q_1 and q_2 are the quantities produced by each plant. The total quantity demanded, q=q_1+q_2 , is related to the price, p , by p=30...

### statistics.. URGENT!! PLZ!!

The margin of error is: a. the difference between the point estimate and the true value of the population parameter b. the critical value times the standard error of the estimator c. the smallest possible sampling error d. none of the above Complete the following sentences ...

### Urgent! MATH

Can some one please explain to me how to do this??? You are walking across a field to get to a hiking path. Use the graph below to find the shortest distance you can walk to reach the path. Explain how you know you have the shortest distance. In the graph, the point where you ...

### Chemistry Urgent Help Please!

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above mixture. Assuming the...

### Physics please help urgent!!

a collision between two pucks on an air-hockey table. Puck A has a mass of 0.025 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.060 kg and is initially at rest. The collision is not head-on. After the ...

### Calculus Help Please Urgent!!!

At time t=0, an astronaut stands on a platform 3 meters above the moon's surface and throws a rock directly upward with an initial velocity of 32 m/sec. if the acceleration due to gravity is 1.6 m/sec^2. a) find the equations of motion for the throwing of this rock. b) how ...

### Chemistry (URGENT)

A gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures: CO2 , 249mmHg ; , Ar 114mmHg ; and , O2 174mmHg . The mixture also contains helium gas. 1. What is the partial pressure of the helium gas? 2. What mass of helium...

### Physics - URGENT

A car is speeding at constant velocity of 30ms-1 in an 80kmh-1 zone as it passes a stationary police motorcycle hiding. The motorcycle starts to accelerate at 5ms-2 at the same instant the car passes it and continues for 8 seconds. It then stops accelerating and maintains its ...

### Physics - URGENT

A car is speeding at constant velocity of 30ms-1 in an 80kmh-1 zone as it passes a stationary police motorcycle hiding. The motorcycle starts to accelerate at 5ms-2 at the same instant the car passes it and continues for 8 seconds. It then stops accelerating and maintains its ...

### Algebra

I need some help with algebra I'm not sure how to get to the answer. Find the number of terms in each sequence. 1. a1=4 an=42 d=2 2. a1--0.3 an=-36 d=2.1 3. 1/12, 1/8, 1/6, 5/24, 1/4,......9/8 Evaluate each sum. 1. There is an e like symbol that has a 15 on top on the bottom n...

### history

please help me on my history assessment its due tomorrow morning so its urgent the assessment is based on world war 1 innovation and inventions we were to choose a technology and i choose weapons now we have to write how did weapons make world war 1 a war to end all wars this ...

### math(urgent)

A 7%,6O day note was discounted at 15 days before the maturity date. If the discount rate was 5.5% and the proceeds received were $ 997,77,find a)the amount of discount that was charged b)the discount date if maturity date of the note is 26 october 1991 c)face value a) 997,77...

### Social Studies (URGENT)

Can someone give me five phrases or sentences that would have been said about witches in early modern Europe, that creates panic, hysteria and influence them to participate in the witch-hunt. Such as: - Sensitive puritans, be weary of evil women! - Witches are wise, and know ...

### Urgent 8th Grade Language Arts

Choose I for each antecedent that is unclear or missing and C for each antecedent that is used correctly. Thanks so much for you help. 1. We can't go to the aquarium Monday because you need reservations. C 2. Many people have Monday off, so the aquarium will be busier than ...

### Square Root Help!!! Urgent:)

Can you help with these please? I'm so bad at them!! 1. square root 160 2. square root -99 3. - Square root -169 4. square root -12

### Mathematics

A family wants to begin saviving for a trip to paris. The trip is planned for 3 years from now, and the family wants to accumulate one million shillings for the trip, if twelve deposits are made quartely to an account which earns interest at the rate of 8 percent per year ...

### Physics Urgent!!!!!

OK, I know, I'm postin this way too many times but I'm halfway there now.... Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be ...

### Physics Urgent!!!!!

OK, I know, I'm postin this way too many times but I'm halfway there now.... Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be ...

### Math plz help me!!! URGENT!!

Find the volume of a cone with a radius of 10 mm and a height of 6 mm. 628 mm3 600 mm3 1,884 mm3 1,254 mm3*** Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest whole number. 439 ft2 324 ft2 572 ft2 ...

### Physics URGENT!!!

A sled loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 40.0o above the horizontal. The sledge moves a distance of 16.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.510...

### Physics URGENT!!!

A sled loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 40.0o above the horizontal. The sledge moves a distance of 16.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.510...

### Help pls urgent

A disk of radius 30 cm is spinning about it axis at 60rmp it deacelerate at a constant rate of 2.0 rad/s^2 until it reaches 20 rpm A find the initial and final angular speed in radians per sec B fine the time it takes to deacelerate from the initial to the final angular speed ...

### Math (URGENT)

A word problem. David flew 300km on a commuter plane, then 2000km on a passenger jet. The passenger jet flew twice as fast as the commuter plane. The total flying time for the journey was 3.25 hours. What was the speed of each plane, in kilometers per hour? Please help. I've ...

### Calculus - Urgent!!!

In case this looks familiar, yes, it is a repost. I really need help. Find the anti-derivitive of f(x)= x^3(x-2)^2. Multiple choice gives me the options: A: 1/6 x^6 - 4/5 X^5 + x^4 + C B: 1/6 x^6 - 4/5 X^5 + 1/4 x^4 + C C: x^6 - X^5 + x^4 + C D: x^5 - 4x^4 + 4x^3 + C I got as ...

### maths(urgent answer pls)

1).Find the sum of the n terms of the series Sn=1^2 + 3^2 +5^2+...+(2n-1)^2 2).Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... 3) Sum to n terms,the series 1.3.5 + 2.4.6 + 3.5.7 +.

### Chem Urgent Help

Plz explain in detail.... i tried to search on internet but i am confused with co-efficents.. how to set up the equaiton .. plz help me ??? Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use ...

### phys urgent!

A particle leaves the origin with a speed of 2.4 times 10^6 m/s at 38 degrees to the positive x axis. It moves in a uniform electric field directed along positive y axis. Find Ey such that the particle will cross the x axis at x = 1.5 cm if the particle is an electron. I don't...

### Science (urgent!)

Three characteristics of friction force and surface type. Three characteristics of friction force and mass. Three characteristics of friction force and surface area. I don't quite understand what they mean by characteristics, or what they want me to do. Could I please get some...

### Science URGENT!!!

Mulitple choice: why is it uncommon to draw lewis diagrams for ionic compounds? A.) Lewis diagrams can only illustrate covalent bonding B.) ionic compounds cannot be represented by Lewis diagrams C.) ionic compounds involve electron transfer not electron sharing d.) formulas ...

### English

I have an urgent question: I have to mention only the countries two tourists went through. I want to be sure that they are countries 1) Europe (is a continent not a country, so I don't include it) 2) Ukraine 3) Kazakhstan 4) Mongolia 5) Russia 6) Bering Strait (no) 7) Alaska, ...

### physics (Urgent)!!!!!!!!!!!!!!!!!!!!!!

A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.3 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal. The gyroscope is ...