# y(y6+y)-5y(y+36)y-55=-100

17,579 results

1. ### statistics

A professional basketball player has embarked on a program to study his ability to shoot foul shots. On each day in which a game is not scheduled, he intends to shoot 100 foul shots. He maintains records over a period of 40 days of practice, with the results below. Foul Shots ...
2. ### Maths GRE

What single discount is equivalent to two successive discounts of 15% and 10% 100 - {(100-first discount) X (100- second discount)/100} = 100 - (100-15)X(100-10)/100 = 100 - 85 X 90/100 = 100 - 76.5 = 23.5
3. ### math help, correction

Anna has 12 bills in her wallet, some \$5 and some \$10. The total value of the bills is \$100. HOw many of each bill odes Anna have? How do i solve these type of problems my quess was this but i don't know if i'm correct. 5(x) + 10(y) = 100 5(0) + 10y = 100 10y = 100 --- --- 10 ...
4. ### mathematics (percentages)

math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth 20% test grades are: ...

The following data were collected on non-conformances for a period of 10 days. Day Sample Size Non-conformances 1 100 12 2 100 14 3 100 10 4 100 18 5 100 22 6 100 14 7 100 15 8 100 13 9 100 14 10 100 16 On what day is the proportion of non-conformances largest? smallest? What ...
6. ### math

Name the property that justifies each step. [(2 * 100) + (3 * 10)]+ [(1 * 100) + (5 * 10)] = (2 * 100) + [(3 * 10)+ (1 * 100)] + (5 * 10)__________ property = (2 * 100) + [(1 * 100)+ (3 * 10)] + (5 * 10)___________ property = [(2 * 100) + (1 * 100)]+ [(3 * 10) + (5 * 10)]...

In this question how do you know when to add or subtract?? Simplify 100^12/100^8 A.100^12/8 B.100^96 C.100^4 D.100^20 Is the answer C or D?? Thank you
8. ### Statistics

The table I have is: Color of Candy Frequency Proportion (as a fraction and decimal) Percentage Red 13 13/100 or .13 13% Orange 25 25/100 or .25 25% Yellow 8 8/100 or .08 8% Brown 8 8/100 or .08 8% Blue 27 27/100 or .27 27% Green 19 19/100 or .19 19% TOTALS 100 100/100 or 1 ...
9. ### Polynomials and properties of exponenets

In the expression -7x-3x^2+5 what is the coefficient of x A.7 B.3 C.-3 D.-7 Suppose you earned 6t+2 dollars on monday and 9t - 6 dollars on tuesday what were your total earnings simplify your answer. A.15t-4 B.15t+8 C.-3t-4 D.-3t+8 100^12/100^8 A.100 ^12/8 B.100^96 C.100^4 D....
10. ### derivative

q=(100/p+1)^2 - 1 what is q'? use the chain rule: q' = 2(100/p+1)(-100/(p^2)) i got q' = 2(100/(p+1))(-100(p+1)^-2 =-2000/(p+1)^3
11. ### math

In this question do I add, subtract, or multiply the exponents? 100^12 ------ 100^8 A.100^96 B.100^4 C.100^20 Thank you
12. ### Algebra

An object which is dropped from 100 feet above ground falls according to the formula s = -16t^2 + 100, where s is the distance from ground level at time t. Which equation is equivalent to this formula? S-100 = t^2 ------- -16 S-100 = t^2 ------ 16 s - 100 = t^2 --- -16 or S-...
13. ### find my grade average

-10% of my grade *82 -20% of my grade *100% *100% *100% *100% *100% *100% *100% *100% *82% -30% of my grade none -40% of my grade *76% reply as soon as possible. thank you!!!!
14. ### math am i correct

Add thirty-eight and nine tenths, five and fifty-eight hundredths, seven, and fifteen and eight tenths. 38 9/10 + 5 58/100 + 7 + 15 3890/100 + 558/100 + 7 + 15 4448/100 + 7 + 15 44 48/100 + 7 + 15 44 24/50 + 7 + 15 44 12/25 + 7 + 15 66 12/25
15. ### Math check

write the decimal as a fraction or a mixed number in simplest form 2.67 2.67/1× 100/100 = 267/100 267/100 = 2 67/100?
16. ### Physics

How many years would it take the planet to orbit the sun. How do you calculate. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Using Kepler's Law you find that the anser is 97^(1.5) years. You can estimate this without using a ...
17. ### math

what is 10% of 20% of 30% pf 100? 100 * .30 = 30 30 * .20 = 6 6 * .10 = .6 I hope that's what your looking for! Are these three separate questions? 10% = 0.10 x 100 = ?? 20% = 0.20 x 100 = ?? 30% = 0.30 x 100 = ?? Remember of means times. Or is it just one question? 0.10 x 0....
18. ### English

I have 100 dollars. I have 100 pounds. I have 100 pesos. I have 100 euros. I have 100 yen. I have 100 won. I have 100 yuan. (Are all correct? Don't we need to capitalize the first letter in each money name? What about the plural forms? Are all correct? Do we have to use '...
19. ### Chemistry

Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
20. ### Math "Need Help Asap"!

7.)Which proportion can be used to solve the following percent problem? What is 50% of 70% A.)X/70 = 50/100 B.)X/50 = 70/100*** C.)50/70 = X/100 D.)70/X = 50/100 B?
21. ### math

Fill in the blanks y = 10x + 100 x y -20 ? -10 ? 0 ? 10 ? I don't see any blanks to fill in. Are they telling you values of y and asking you co compute x? Or vice versa? The spacing changed the format I had. the values for x are -20, -10, 0, 10 now I need to find the values ...
22. ### Math Help!

Which proportion can be used to solve the following percent problem? What is 50% of 70? A. x/70=50/100 B. x/50=70/100 C. 50/70=x/100 D. 70/x=50/100 Is the answer B? Thank you
23. ### Pre Algebra

5. (m^2-m-3)+(m-4) A. m^2+m-1 B. m^2+2m-7 C. m^2-7 D. m^2-1 6. (4x^2-2x-1)-(-3x^3+2) A. -3x^3+4x^2-2x+1 B. -3x^3+4x^2-2x-3 C. 3x^3+4x^2-2x+1 D. 3x^3+4x^2-2x-3 9. 100^12/100^8 A. 100^12/8 B. 100^96 C. 100^4*** D. 100^20 16. (1.1*10^-5)(3*10^-2) A. 4.1*10^-7 B. 4.1*10^10 C. 3.3*...
24. ### Math percentages

Is this right?? 10 + 7 = 17/100 = 41.2 % 100 + 92 = 192/100 = 1.92 % 15 + 13 = 28/100 = 1.25 % 28 + 22 = 50/100 = .5%
25. ### Chemistry

100 g piece of granite and a 100 g piece of lead are placed in an oven that is at 100°C. The initial temperature of the pieces are 25°C. After a couple of minutes, neither one is at 100°C, but which one is warmer? Which one will reach 100°C first? How much energy will it ...

Hi.. i'm a little confused on using proprtion equations to solve percent problem. can you check the following? Is there a different way to solve? equation: is(part)/of(whatnumber)= %/100 1. What is 94% of 43? x/43 = 94/100 100x = 43*94 (cross multiply) 100x = 4042 x = 4042/100...
27. ### Physics

What is the heat in Joules required to raise the temperature of 25 grams of water from 0 °C to 100 °C? What is the heat in calories? Knowing that 4.18 J = 1 calorie and C= 4.18 J/g·°C M=25g C=4.18 J/g Tf=100 Ti=0 Q=25g x4.18j/g (100-0) Q=25x4.18x(100) Q=104.5(100) Q=10,450
28. ### math,correction

simplify: sqrt ((7)/(100)) my work: 7 = 1sqrt (7) 100= 10 sqrt (1) (1)/(10) sqrt (7) my answer: (sqrt (7))/(10) Your answer is right but your statements: 7 = 1sqrt (7) 100= 10 sqrt (1) make no sense. how can sqrt(7)=7 ? you are saying 2.6457..=7 and 10sqrt(1) = 100 ---> 10 ...
29. ### Math (Confused)

A certain economy's consumption function is given by the equation C(x)=0.75x+5 where C(x) is the personal consumption expenditure in billions of dollars and x is the disposable personal income in billions of dollars. Find C(0), C(50), and C(100). a. C(0)=42.5, C(50)=5, C(100)=...
30. ### Math

Solve the equation: 4x^2 + 100 = 0 Here is my work: 4x^2 + 100 = 0 - 100 - 100 4x^2 =0 /4 /4 x = -5 or 5. Did I do this correctly?
31. ### Stats

Y is a discrete random variable. The table below reports the values of Y and the corresponding frequency, n (the number of observations for each value). Based on this information, what is the expected value of Y? Y n 50 50 70 100 100 200 200 50 120 100 140 100 150 100
32. ### Chemistry

Which of the following mixtures will result in the formation of a buffer solution if all solutions are 1.0 M before mixing? i) 100. mL of NH3(aq) and 100. mL of HCl(aq). ii) 100. mL of NH3(aq) and 50. mL of HCl(aq). iii) 100. mL of NH3(aq) and 50. mL NaOH(aq). iv) 100. mL of ...
33. ### Math

A physician ordered 1 L of D-10-1/2 NS to infuse over 10 hours. How many grams of Dextrose would the patient receive per hour? I answer like this D10 = 10g/100 ml 1 L= 1000 mL 10 g/100 mL= x/ 1000 mL 100x= 1000x10 x= 10,000/100 x= 100 g over 10 hours 100g/10 hr = x/1 hr 10x= ...
34. ### Math Homework: Check Answers

1. Suppose you earned 8t - 3 dollars on Monday and 6t + 5 dollars on Tuesday. What were you total earnings? Simplify your answer. A) 2t + 2 B) 2t - 8 C) 14t + 2 D) 14t - 8 Answer: A 2. f^2 • f^4 A) (2f)^8 B) (2f)^6 C) f^8 D) f^6 Answer: D 3. 100^12/100^8 A) 100^12/8 B) 100^...
35. ### Math

Select the inequality that models the problem. The length of a rectangle is four times its width. If the area of the rectangle is less than 100 square meters, what is the greatest width of the rectangle? 4w + w < 100 4 + 4w < 100 4w < 100 4w • w < 100
36. ### Chemistry

Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). (I have several problems like this can some one work this through for me as a base line)?

Add or subtract exponents? I don't know when to add or subtract it's all confusing. 100^12/100^8 A.100^12/100^8 B.100^96 C.100^4 D.100^20 If I added it would be D If I subtract it would be C Please help I don't know which one is right. Thank you
38. ### pre calculus

Given: u <-1, 7> and v <4, -3> Find: (u • v)(u + v) ________________________________________ <25, 100> <-25, 100> <-75, -100> <75, -100>
39. ### math

how to solve 1/100-2/100+3/100-4/100+....+99/100-1?? and this?? -1/100+2/100-3/100+4/100-....-99/100+1??
40. ### math

round 25 to the nearest hundred Do you mean hundred as in 100? If so, 25 is closer to zero than it is to 100. So I would round numbers like 51 and 60 to 100 while 25 or 35 would be rounded to zero. If you mean hundred as in 100, then you would round 25 to 0, because ...
41. ### Math Help

1.Liam wants to buy a bicycle that costs \$290.00. His parents say Liam must raise 40% of the money himself. How much money must Liam raise? A. \$112.00 B. \$40.00 C. \$116.00*** D. \$87.00 2.Solve the proportion using cross products 29 miles/58 hours=10 miles/ h hours A. 10 B. 20...
42. ### Math

Bhu had \$48, but received \$100 as a birthday gift and used the money to pay off her debt. She spent half of the money on a gift for herself. Which expression BEST represents the number of dollars Bhu has left? a.(-48+100)÷2 b.(48+100)÷2 c.-48+100÷2 d.2(48+-100)
43. ### Pre-algebra

Use a proportion to solve the problem. 34% of 83 x/100=34/83;40.96 x/100=34/83;2.822 x/83=34/100;28.22 x/83=34/100;56.44 I think it's either c or d because a and b arn't set up correctly according to how you're supposed to set up a porportion.
44. ### Physical Science

I need help with this problem because it is confusing me. I tried to anwer it, though, so can someone please correct me if I am wrong? Suppose your mass is 45 kg and the mass of your little brother is 25 kg. You push your brother +100 N and an equal but opposite force of -100 ...

WHAT IS 2/5 OF \$50.00 AND WHAT IS 3/10 OF \$50.00...IF YOU SHOW ME HOW TO GET ONE ANSWER, I CAN PROBABLY FIGURE OUT HE OTHER ONE. of means times. 2/5*50 = ?? That's (2/5)*50 = 100/5 = ?? Yes. Now, take 100 and divide it by 5. 100/5 = 100 divided by 5. What do you get from there...
46. ### math

Write a function rule for finding the amount of daily pay, p in the following situation; A bus driver gets paid \$100 each day plus \$0.20 per kilometer, k. A.100=0.20 x k B. p=0.20x100 x k C. p= 0.20k+100 D. 0.20k=100+p Is the answer B??
47. ### Chemisrty

Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is actually 110, no, it isn't saturated (105 is less that 110). C) Yes, because the ...
48. ### microeconomics

Consider a competitive exchange economy with two agents(1&2)and two goods(X&Y). Agent 1's endowment of (X,Y) is (100,100)& agent 2's endowment of (X,Y) is (50,0).An allocation of agent i is denoted by (xi,yi)where xi is his allocation of X & yi is his allocation of Y.Agent1's ...
49. ### Math riddle

1. is 100 rounds to 100 and 99 rounds to 100. 2. 100 + 99 = 199 which est to be 200. 3. 100 - 99 = 1 Which est.to be 0 zero.
50. ### Maths GRE

A salesman receives a commission of c% on a sale of D dollars. Find his commission. A)cD B)cD/100 C)100cD D)c/100D E)100c/D Any number expressed as a percentage is that number divided by 100 expressed as a decimal. Thus c% is c/100 Multiplying that by the sale price D gives: (...
51. ### Physics

Which would burn the most 100 g of water at 100 degrees C or 100 g of steam at 100 degrees C?
52. ### Physics

5. If a wave has a wavelength of 20m and a speed of 100 m/s, what is the period of the oscillation? v = wavelength / period 100 = 20 / period 100*20 = periodperiod = 20 / 100 2000 s = period OR period = 20 / 100 period = 0.2 s I don't know which one is correct, please help?!
53. ### Chemisty

Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g H2O, 52.60 g C2O4 11.55...
54. ### Chemistry

Calculate the pH after 0.011 mol NaOH is added to 1.00 L of each of the four solutions. a) 0.100 M propanoic acid (HC3H5O2, Ka= 1.3 10-5) b) 0.100 M sodium propanoate (NaC3H5O2) c)pure H2O d) 0.100 M HC3H5O2 and 0.100 M NaC3H5O2
55. ### Dr. Bob Chemistry question

Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g H2O, 52.60 g C2O4 11.55...
56. ### Math 115

A department store is offering a coupon for 21% off for any purchases over \$100. How much would you spend for a \$100 purchase? You would spend \$100. You would spend \$79 on a purchase of \$100.01 You would spend \$79.8 on a purchase of \$101.00 You would spend \$87.69 on a purchase...
57. ### math (find my grade)

1% of my grade 82% 4% of my grade 76% 2% of my grade 100% 100% 100% 100% 100% 100% 100% 100% 82% could you please find my average. thank you!!!!
58. ### algebra

I need to check & see if I understand this. 100,000 base 100 is 100 with an exponent of 5, right?
59. ### pyhsical science

How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
60. ### physical science

How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
61. ### physical science

How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
62. ### chemistry

In a Styrofoam cup calorimeter, what is the final temperature when 100. g of iron at 100. ° C is added to 100. g of water at 20. ° C?
63. ### statistics

If X is a random variable which is normally distributed with a mean of 100, then P(X<100)=P(X>100) True or False?
64. ### chemistry

How much volume in liters will 100.0 g of oxygen occupy at 100 0C and 100 atm pressure?
65. ### chemistry

How much volume in liters will 100.0 g of oxygen occupy at 100 0C and 100 atm pressure?
66. ### math

What is the largest power of 5 which divides the product of an the first 100 positive integers: 1 X 2 X 3 X ... X 98 X 99 X 100? A.5^2 B. 5^20 C. 5^24 D. 5^100
67. ### Chemistry

How many mL of 0.100 M HCl must be added to 100.0 mL of 0.100 M F- to prepare a buffer solution that has a pH of 3.05? F- (aq) +H20 (l) <--------> HF (aq) +OH- (aq) Kb= 1.47*10^-11
68. ### Chemistry

In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to substitute. 1(100/9)= 11....
69. ### Chemistry

In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to substitute. 1(100/9)= 11....
70. ### Chemistry

How much volume in liters will 100.0 g of oxygen occupy at 100 degrees celcius and 100 atm pressure?

What single discount is equivalent to two successive discounts of 15% and 7%? x= 100 [1-(.85)(.93)] = 100 (1-.79) =100 (.21) =21%

ok 4/25 * 75/100 then switch it to divison 4/25 / 75/100 but you need the recipricle so its 4/25 / 100/75 =?
73. ### algebra (check my work)

60% of what number is 24? a/w = p/100 24/w = 60/100 24 * 100 = 60* w 2400 / 60 = 60w / 60 w = 40 am i correct?
74. ### Chemistry

How much volume in liters will 100.0 grams of oxygen occupy at 100 degrees celcius and 100 atm pressure?
75. ### chemistry

What is the ion in the resulting solution? 100.0 mL of 0.015 M K2CO3 and 100.0 mL of 0.0075 M BaBr2? 25 mL of 0.57 M Ni(NO3)2 and 100.0 mL of 0.150 M NaOH
76. ### mathematics (percentages)

math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth 20% test grades are: ...
77. ### math

explain how you can use place value to show 100 in different ways.asap consider scientific notation, eg 1.00*10^2 or 100.0 or 100.00
78. ### Chemistry

What is the CHANGE in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10-5.
79. ### Statistics

What price do farmers get for their watermelon crops? In the third week of July, a random sample of 51 farming regions gave a sample mean of = \$7.08 per 100 pounds of watermelon. Assume that is known to be \$1.80 per 100 pounds. Find a 99% confidence interval for the population...
80. ### math

How to complete the following number sentences so that the answer to each is 1. x/100 + 6/100 +75/100 =1 x/10- 2/10- 4/10 -2/10 = 1
81. ### Algebra

The larger of two numbers is 5 less than twice the smaller number. The sum of four times the larger and twice the smaller number is 100. If x is the smaller number, which equation below determines the correct value of x? A) 2(2x + 5) + 4x = 100 B) 2(2x – 5) + 4x = 100 C) 4(...
82. ### accounting

A bond sinking fund investment is started on January 5, 2010, by transferring \$10,000 in cash to the fund. This \$10,000 is invested and earns \$1,100 during 2010. The entry to record the earnings made on the sinking fund investment includes a debit to _____and a credit to ...
83. ### physic

If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting temperature was 100oC and the specific heat capacity is 386 J/kgK. E=MC(T2-T1) 115800=2*112.85(T2-100) 115800=225.7(T2-100) 115800/225.7=(T2-100) 513=(...
84. ### physic..plz check if corrected

If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting temperature was 100oC and the specific heat capacity is 386 J/kgK. E=MC(T2-T1) 115800=2*112.85(T2-100) 115800=225.7(T2-100) 115800/225.7=(T2-100) 513=(...
85. ### Math

Express 0.54 as a fraction in simplest form. .54/100 54/100 27/50******* 100/54
86. ### Math- STATS 218

When the following hypotheses are being tested at a level of significance of aH0: m 100 Ha: m < 100 the null hypothesis will be rejected if the test statistic Z is a. >Z b. >Z c. <Z d. <100
87. ### accounting

A bond sinking fund investment is started on January 5, 2010, by transferring \$10,000 in cash to the fund. This \$10,000 is invested and earns \$1,100 during 2010. The entry to record the earnings made on the sinking fund investment includes a debit to _____and a credit to ...
88. ### Physical science

how many calories to change 100 grams of water at 100 degrees C. to 100 grams of steam at 100 degrees C.?
89. ### Science

How much heat is absorbed by a persons hand if 100 grams of steam at 100°C is first converted to liquid water at 100°C and then cooled to normal body temperature?
90. ### chemistry

What mass of barium sulphate can be produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron (III) sulphate? Please explain!
91. ### Math Help

1. 77 is what percent of 192? A. x/100=77/192;4.01%**** B. x/100=77/192;40.1% C. x/77=100/192;77.3% D. x/100=192/77;249.4% 2.Of the 80 eigth-graders, 32 are going on the class retreat. What percnt of the eigth grade going on the retreat? A. 25% B. 55% C. 40% D. 32%*** 3. ...
92. ### chemistry

Which of the following when added to 100.0mL of a 0.100M soln of NH4Cl would produce a buffer soln? a.100.0mL of 0.100 M HCl soln b. 100.0mL of 0.050M NaOH soln c. 100.0mL of 0.100M NaOH soln d. 100.0mL of 0.050M NH4No3 soln e.none of the above
93. ### Chemistry

I just need this checked over. I am not sure about the last part D. Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is actually 110, no, it ...
94. ### computer studiea

: 88% 100% 100% 100% 16% what is overall percentage
95. ### Math

Given that 1+2+3+...100= 100(1+100)/2. Simplify (x+1)+2(x+1)+...+1000(x+1)
96. ### Math

100(1+100) Example : 1+2+3+…+100= ----------- 2 Simplify: (x+1) + 2(x+1)+ …+1000(x+1)
97. ### statistics

It is known that the population mean for the Full Scale IQ of the WAIS is 100 with a standard deviation of 15. A researcher assesses a sample of 200 adults and find that they have a mean Full Scale IQ of 102. The point estimate of the mean for this group is ___________ and the...
98. ### algebra

Solve log 1/100 = log(10x + 2). Do you mean (log 1)/100 or log (1/100)? If the latter, then 1/100 = 10 x + 2 Take it from there
99. ### math

for questions 1 and 2 chose the equation or proportion that you can use to solve the problem what number is 73% of 215 A( 215=0.73n B( n=0.73 X 215 C( 0.73=n X 215 D( 215=73n what percent of 94 is 23 A( n/94=23/100 B( 23/94=n/100 C( 94/n=23/100 D( 23/94=100/n
100. ### statistics

Starting with a population that is normally distributed with a mean of 100 and a standard deviation of 12, answer the following questions (if possible). a. What is the probability of randomly drawing a single score between 100 and 106, p(100 < X < 106)? b. What is the ...