# Posts by jessica

Total # Posts: 3,397

Geometry
Which answer is not a theorem or postulate used to prove triangles similarity? SAS SSA ~~my choice SSS AA

Geometry
A triangular pyramid is defined by the points .The pyramid is then reflected over the xz-plane. The reflected image is then translated 3 units back, 2 units left, and 4 units up. Write the general rule you use for the reflection. Show the results of your calculations for the ...

Geometry
Which is the formula for the surface area of a sphere with radius r? S=4πr2 S=2/3πr3 S=4/3πr3 S=2πr2 ~~My choice

Math
Find the sale price Cost:\$67.20 Present markup:10%

math
How to cut 10 boards that are 7.8 feet long into 2.25 feet long siding for a porch?

Math
Toronto is playing Anaheim in the Stanley cup final. The first team to win four games is the new NHL champion. If the probability of that Toronto will win any game is 0.55 determine the probability that Anaheim wins the Stanley Cup.

Mario cut a pizza into 9 equal slices. He put a slice on each of 5 plates. What is the measure for the angle of the slices that are left?

math
Mario cut a pizza into 9 equal slices. He put a slice of pizza on each of 5 plates. What is the measure for the angle of the slices that are left?

Art
No that's wrong the only thing that's right is 3.😒 Thanks alot

Chemisty
You have 775 mL of an 0.11 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an acetate buffer of pH = 5.05? (The pKa of acetic acid is 4.76.) I don't know what to do!!! HELP!!!!

Art

Geometry
What does the radius of a sphere join? any two points on the sphere and does not contain the center any two points on the sphere and contains the center <~my choice any two points on the sphere the center and a point on the sphere

me too thx anonymous

Geometry
What does the diameter of a sphere join? any two points on the sphere any two points on the sphere and contains the center <~my choice any two points on the sphere and does not contain the center the center and a point on the sphere

Math
THis is the question posed to me by mi bio teacher. THe more specific of it it is, "find the masss of a liver cell, assuming it has the shape of a cube, with the diameter and density of water."

Math
So, I need to find the mass of a cube. I have diameter of 16.4 micrometers, and density of 1,000 kg/m3. I can find all kinds of formulas for spheres, but not for cubes?

History
What did John Locke believe? Absolute monarchs have the right to rule through divine right. God should not be involved in the affairs of mankind. All governments should have three branches with equal power. <~my choice It is the governments job to protect the natural rights...

Art
Is it c?

Maths
Find a number between 20 and 30 that is half the sum of its factors

Art
c

Geometry
In the surface area formula for cylinders, which expression represents the lateral area? πrh 2πrh <~my chocie πr*2 2πr*2

Art
1.C 2.A 3.C 4.D 5.B

History
2. In the space below, create a simple time line that traces the emergence of a constitutional monarchy in England during the seventeenth century. It is not necessary to include exact dates, but events should be in the correct order. Include at least eight events that were ...

Precalculus
sketch the graph of each equation y=4x-x2

math
The master bedroom of Julie's new apartment measures 10.5 feet by 16 feet. What is the area of the room?

HISTORY
1. Explain from the Gilded Age that supports the "the farmers were up in arms." 2. What is one change in the South between 1877 and 1900 that reflected the policies of the New South agenda?

phys
I got it it was 2.1 x .5 then i calculated it now I am trying to figure out What the car's displacement is from its original position? how would I figure that out do I divide from the 2.1 and the 1.05?

phys
A circular test track for cars has a circumference of 2.1 km . A car travels around the track from the southernmost point to the northernmost point what distance does the car travel?

Chemistry
thank you so much DrBob222 ^^

Chemistry
A certain amount of calcium reacts with water and the formed hydroxide 49g completely neutralized phosphoric acid. Calculate the volume of hydrogen obtained, at STP, and the mass of calcium.

science
The length of an aluminium bar of length 80 cm increases by 1 mm on heating.What is the final temperature of the bar if it was initially at temperature 20 degree Celsius? (coefficient of linear expansion of aluminium =25*10-6/degree Celsius)

science
the length of an aluminium bar of length 80 cm increases by 1 mm on heating. What is the final temperature of the bar if it was initially at temperature 20 degree celsius? coefficient of linear expansion of aluminium =25*10-6/ degree celsius

English
Can someone please check my answers for finding the subject and verb these sentences? The milk in the back of the refrigerator is probably spoiled by now. S= milk V= is spoiled The family that lives in the brown house moved in just a month ago. S= family V= moved Jackie, Gwen...

Chemistry
thank you bobpursley

Chemistry
On calcination 80g of a marble were obtained 42 g of calcium oxide. The degree of purity of marble?

Setswana
Tlhamo two page. Kgwebo ee tlhakanetshweng e gaisa ya motho a le esi.

math
Stop being stupid Reiny and just help "Help me Asap"

CHEMISTRY
1.) 2 methylpropene is a compound used to make synthetic rubber. A sample of 2 methylpropene contains 0.566 g C and 0.0933 g H. Determine its empirical formula

Have you seen the test? I'm a parent and the questions are ridiculous. I can't even do the math and I sat through the lessons and have a double master's. So, Good Luck Student! This test is stupid and hard.

Chemistry
An ion of sulfur has a smaller atomic radius than a neutral atom of sulfur because it loses an electron when becoming an ion. True or False?

Social studies
anon is right

Chemistry
Lglelglelelel

Chemistry
Umm... Im in something grade. I don't know this stuff. hi

Physics with Calculus
Megurine, no... I think I am having trouble solving for q3 using both Coulomb's Law and the superposition principle. So far I have 31.78326213+Fsub3=7.954

Physics with Calculus
qsub1:-2.8uC qsub2: 6.6uC qsub2 sits 7.9 cm away from qsub2, and in a previous question moved up the y axis 2.7cm. The question that I am having difficulty with has added qsub3 in the middle of of qsub1 and qsub2, changing the magnitude of Fsub2net= 7.954. What is the sign and...

math
In a fruit basket 1/4 of the fruits are bananas and 3/8 are mangoes.Which are more the bananas or the mangoes? Solution

Math
Which equivalent fraction would you have use in order to make 3/5 to 21/25?? Plz have an explanation of how you solved the answer and not just one sentence. Thank you!!

Math
Car 1 & Car 2 leave the same location . Car 1 leaves the location 10 minutes before Car 2 and is traveling 65 mph. Car 2 is traveling at 75 mph. How long before Car 2 catches Car 1?

wrtiting
Robert Created a pattern by starting with the numbre 5 using the rule múltiply by 2,then subtract 3 write the next 5 terms in the pattern

heath
(1)A (2)B (3)C

PHYSICS
FIND THE MASS OF A 200 n BABY ELEPHANT

Trigonometry
A plane leaves an airport and flies at 36 mph on a course of 103.25° for 1 hour and 33 minutes. Then it changes course to 236.75° and flies for 48 minutes. How far is it from the airport? If it wished to return, what would be its course?

health
3. D

Algebra 1
An experiment is underway to test effect of extreme temperature on a newly developed liquid two hours into the experiment the temperature of the liquid is measured to be-17 degrees Celsius after eight hours of the experiment the temperature of the liquid is -47 degrees Celsius...

Chemistry
If a basic solution has a pH of 11.88, is it considered to be a strong base? Is an acidic solution with a pH of 4.44 considered to be a strong acid?

English
I need some help with this question

English
Martin Luther King begins his letter with the following paragraph: While confined here in the Birmingham City Jail, I came across your recent statement calling our present activities "unwise and untimely." Seldom, if ever, do I pause to answer criticism of my work ...

math
3/6

math
a customer went to a garden shop and bought some potting soil for 17.50 and shrubs. if the total bill was \$71.00, how much did each shurb cost if they all cost the same? write and solve an equation. show your work

technoligy
1:D 2:A 3:B 4:C anonymous is right

Math
The first term in a sequence is 4 and each of the following terms is found by multiplying the previous term by n. What is the fifteenth term? Is the answer 4n(15)?

Algebra 1
Eight times the sum of 11and a number is 123

math
Suppose you have \$60 to buy shrimp and chicken wings for a party. Shrimp costs \$10/lb and wings cost \$6/lb. Write and graph a linear equation that could be used to determine the number of pounds of each food that can be purchased with \$60 Would I start with the y = mx + b 60...

Math
A utility company has the following rate schedule for natural gas usage in a city's business district: Monthly service charge \$8.80 per therm service charge: 1st 25 therms: \$0.6686/therm over 25 therms: \$0.85870/therm (a) what is the charge for using 25 therms in one month...

Math
A quality company verifies 2 shirts from the same box to insure the quality of the shirts that are being sent out. If each box contains 3 small, 4 medium, and 2 large shirts, what is the probability that they will pick the same size shirt for a box? I am unsure how this ...

math
Rachel deposited \$6,004 in a savings account with simple interest. Three months later, she had earned \$210.14 in interest. What was the interest rate?

chemistry
Write the net ionic equation for the following molecular equation. 3FeCl2(aq) + 2(NH4)3PO4(aq) Fe3(PO4)2(s) + 6NH4Cl(aq)

AP Physics
A ball is kicked 30º above the horizontal with an initial velocity of 20m/s. A fence 2.3 meters high is located 32 meters away. a. How long does it take to reach the fence? b. Does it goes over the fence? Does it hit the ground before? By how much? I believe I have to ...

science
Red car is A. Blue car is B. The Blue car is slower than the A. The Red car starts at a starting point 40m behind the Blue at what point do they meet?

statics
A store clerk filing an order for 17 models of a new smart-phone inadvertently pulled some older models and included them in the order. There are 25 new models and 12 older models in stock when the clerk filled the order. Determine the probability that the company receiving ...

genetics
Consider a population where gene A come in two form, A1 and A2. This gene is not under selection and random mating occurs with respect to that gene and p= 0.5 and q= 0.5. What are the expected genotype frequencies in the next generation? To do this, you should find the ...

Chemistry: Equilibrium
So, I think I'm doing everything right and even checking my math, but it keeps showing up as wrong. If someone can help me and go into detail,including the quadratic formula, I would appreciate it: Phosphorus pentachloride decomposes according to the chemical equation Pcl5...

Louisiana History
Is #3 B?

Louisiana History
Please help!!! 1. What set the steamboat apart from the flatboat and the keelboat? a) The steamboat was inexpensive to build. b) The steamboat could go back upriver with ease.*** c) The steamboat has a slow and easy ride. d) The steamboat could only transport people. 2. Why ...

math
Louann and Carla received equal scores on a test made up of multiple choice questions and an essay. Louann got 14 multiple choice questions correct and received 24 points for her essay. Carla got 16 multiple choice questions correct and received 14 points for her essay. How ...

Physics
a. 7.99 s b. 68.0 m c. -63.7

Physics
A baseball is thrown at an angle of 29 degrees relative to the ground at a speed of 24.3 m/s. The ball is caught 51.0463 m from the thrower. The acceleration due to gravity is 9.81 m/s2 How high is the tallest spot in the ball's path? Answer in units of m

Union City
A segment of length 94 cm has rotated d degrees around center 0 what is the length? What is d and O

Louisiana History
C, A??

Louisiana History
D, B, A???

Louisiana History
1. Which was not a reason for the King of Spain to be cautious when siding with rebelling British colonists? A) The colonists were rebelling against a monarch B) Spain could acquire more land in the New World. C) The British colonists were not well-funded and not as powerful ...

Physical Chemistry
A saturated solution of Na2SO4, with excess of the solid, is present at equilibrium with its vapor in a closed vessel. (a) How many phases and components are present? (b) What is the number of degrees of freedom o the system? Identify the independent variables. Suppose that ...

Art
B) If, as Edmond indicated, Pont Neuf, Paris was painted during a single day, it was preceded by careful preparations, possibly including preliminary delineation of the permanent architectural features.

Louisiana History
Please Help!! 12. What was the main exploration goal of Robert Cavelier, Sieur de La Salle? A) to find gold and silver** B) to find an all-water route to China C) to establish a fur trade with the Indians D) to map the route of the Mississippi River

Louisiana History
Thank You!

Louisiana History
Please Help!! 10. Why was it necessary to move Fort Maurepas? A) Native Americans kept attacking the fort. B) The sandy soil the fort stood upon was useless for growing.** C) The king of France did not want the fort to be in a place that everyone could easily see. D) The ...

Louisiana History
Please Help!! 9. Why did Louisiana's proprietary governor, Cadillac, first have trouble with the Indians? A) He refused to smoke the calumet. B) He ordered raids on Indian settlements. C) He captured and made slaves of the Indians. D) He ordered the Indians off their ...

Louisiana History
Please Help!! 6. Which problem did Bienville address first when he returned to serve Louisiana's governor a second time? A) food shortage B) Indian relations C) lack of colonists D) money shortage

Louisiana History
Are the answers to 1. B, 2. A, C???

Louisiana History
Please check my answers 1.Which best describes the effect of European settlers on the culture of Native Americans in Louisiana? A) The Native Americans were left to prosper on their tribal homelands. B) The Native Americans turned increasingly from hunting and agriculture to ...

Chemistry
If you have light that has a frequency of 2.88 x 10 to -9 power Hz, what is the wavelength? I don't know how to do this and what formula to use.

Iodine-131 is a radioactive isotope. After 8.00 days, 50.2% of the sample remains. What is the half life of 131-I?

Science
Does hot or cold water dissolve faster in with 20g of sugar

Math
The answer would be 57.1985401309. I'm not exactly sure how to explain it.

Quick math help
No, you are correct. Great job!

Chemistry I - University
Suppose 5.87 g of barium acetate is dissolved in 300. mL of a 71.0 m M aqueous solution of sodium chromate. calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change when the barium acetate is dissolved in it...

Chemistry I - University Level
@ DrBob222 I know my ions are the same as my moles but I am having trouble understanding what I do next. Can you explain how you broke down this problem? What steps am I missing? Thank you!

Chemistry I - University Level
Suppose 5.87 g of barium acetate is dissolved in 300. mL of a 71.0 m M aqueous solution of sodium chromate. calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change when the barium acetate is dissolved in it. ...

math
The price of a small cabin is \$55,000. The bank requires a 5% down payment. The buyer is offered two mortgage options: 20-year fixed at 7.5% or 30-year fixed at 7.5%. Calculate the amount of interest paid for each option. How much does the buyer save in interest with the 20-...

math
The price of a small cabin is \$35,000. The bank requires a 5% down payment. The buyer is offered two mortgage options: 20-year fixed at 7.5% or 30-year fixed at 7.5%. Calculate the amount of interest paid for each option. How much does the buyer save in interest with the 20-...