# Posts by lara

Total # Posts: 161

**Math**

While walking from her house to school, Miriam walks at a pace of 5 km/h. When she walks in the hallways at school, she slows down to 3 ½ km/h. If she spent 2 ½ hours walking to and from school and ¾ of an hour walking in the hallways, what was her average...

**Maths**

The difference between the two digits of a two digit number is 2. If the digits swap places,the number is 18 less than the original number. What is the original number?

**Maths**

Sophie borrowed $2000 at a simple interest rate of 15% for 3 years to repay the loan and has $900 in interest. If Sophie's interest was calculated at the same rate on the balance owing, how much would she have owed after 6 months if she repaid $40 per month? Give your ...

**math**

at noon the temperature is .6.f but the temperature drops 2 degrees per hour for the next few hours?what is the temperature at 4 pm?

**math**

a photograph has an area of 80sq inches.the length of the photo is 1 1/4 width. what is the following dimension of the photgraph?

**Zoology**

Azaleas are flowering shrubs that produce numerous colorful blossoms. Assume that a single gene determines the color of the flowers, and only two alleles for that gene exist. Individuals that are homozygous for the first allele have yellow flowers and individuals that are ...

**Math**

what does skip half an increment mean in graphs

**statistic**

Your professor tells you that if you score an 85 or better on your midterm exam, then you have a 90% chance of getting an A for the course. You think you have only a 50% chance of scoring 85 or better. Find the probability that your score is 85 or better and you receive an A ...

**Math**

Pamela can run 100 meters in 12.5 seconds and Josalin can run 150 meters in 20 seconds. If they both ran a 400 meter race at this rate, how many meters ahead would Pamela cross the finish line before Josalin?

**Math**

Your long distance telephone providers offers two plans.Plan A has monthly fee of $15 and $0.25 per minute. Plan B has a monthly fee of $20 and $0.05 per minute.Write and solve an equation to find the number of minuts that you must talk to have the same cost for each of the plans

**Texas History**

in the age of cantact when spanish explorers wanted god,gold and glory.they wanted to claim land for their country

**Texas History**

What issues and events caused multiple claims to Texas?

**chemistry**

You can temporarily receive relief from acid indigestion by using an antacid that contains a base. Why is it not a good idea to use an antacid routinely? (2 reasons)

**math**

A community park wants to place a rectangular billboard to inform guests of their new attractions. Suppose the length of the billboard to be placed is 5m longer than its width and the area is 500m2. What will be the length and the width of the billboard? Let w be the width of ...

**Chemistry**

In the zinc-copper cell, Zn(s) | Zn^+2(1M) || Cu^+2(1M) | Cu(s), which electrode is negative Cu^+2 Cu(s) Zn(s) Zn^+2***

**Chemistry**

Of the following metals, which ions are most easily reduced? aluminum*** iron mercury potassium

**Math Help!**

whats the question. I can try to help

**Chemistry**

Which atom has a change in oxidation number of –3 in the following redox reaction? K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2 Cr^+3 - - > Cr2O7^-2 Fe^+2 - - > Fe^+3 Fe^+3 - - > Fe^+2 Cr2O7^-2 - -> Cr^+3***

**maths**

In a right angled triangle where angle A is a right angle the Hypotenuse BC square equals AB square plus AC square 5 square plus 12 square equals 169 cm square square root 169 = 13 Therefore, BC= 13 To find the surface area of the prism you have to find the area of the equal ...

**Math Probability problem**

Can you please illustrate details? Thank you

**Math Probability problem**

Tony has 3 jackets and 2 shirts and 2 pants. He wants to wear three items every day. How many outfits he can choose of the same clues and/or of different clues

**Math**

cancel a and b can you please tell me how many outfits can he make? Thank you

**Math**

Johnie has 3 Jackets (J1, J2 and J3) and 2 shirts (S1, S2) and 2 Trousers (T1, T2). He wants to wear 3 pieces of clothes daily. what should he choose if a) same clues or b) different clues

**Grammar**

was is a verb in the past tense. with is a conjunction

**Grammar**

sorry I meant the patient is oriented. the patient is being described (adjective) to be oriented. So it is not a verb

**Grammar**

the verbs are is has alert and oriented are adjectives which describe how the patient is. In other words they mean to say The patient is alert The patients is oriented So when using the word and which is a conjunction word this stops us from repeating the same sentence and ...

**Ms Sue English**

I agree with you that your grammar is excellent. when using series a Comma is used after each word regardless if it is a noun or adjective or a verb. Before the last word there should be the word "and". therefore, the sentence should be as follows Bright, friendly, ...

**Science**

a bullet with mass 0.281 kg is fired from a rifle. It stick into a block of wood with a mass of 17.8 that was at rest. The block/bullet combo moves at 3 m/s. What was the initial velocity of the bullet?

**Trig**

-2sqrt3/3?

**Trig**

And the exact value for csc4pi/3 is determined how?

**Trig**

Find the exact value of csc 4pi/3 What I have determined thus far: 4pi/3 = 60 degrees sin = square root of 3/2

**Trig**

Thank you to both of you, I am new to this site and it has been a blessing. Reiny your CAST rule which I was not taught, is very helpful. Your whole post will be useful come my exam. My book is not as straight forward..I fear for my GPA. :(

**Trig**

Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2 Please detail how/why i can get to the solution. I need to understand the concept clearly...... It will probably relate to something taught down the line I'm sure.

**Trig**

Can you please detail why that is the answer?

**Trig**

I don't want just the answer but how to get to it. I need to fully understand how to arrive at the conclusion....And that is clearly where I am struggling.

**Trig**

Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2

**Trig**

Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2

**Trig**

If cot theta = -12/5 and the terminal side of theta lies in quadrant II find secant theta

**physics**

A stone is projected vertically upward with a speed of 20 m/s. a. What is its velocity at the end of 2s? b. What is the height reacted after 2s?

**Chemistry**

three liquids have densities of 1.15g/m, 0.79g/ml, and 0.95 g/ml. When the liquids, which do not mix, are poured into a graduated cylinder, the liquid at the top is the one with a density, in g/ml, of ?

**english**

C is wrong. senator is suppose to be capitalized. D is wrong. world war ii should be capitalized. A is wrong. President is not suppose to be capitalized unless it is preceded by a name. ex. President Obama B is correct. the North should be capitlize as it is referring to a ...

**Chemistry**

If there are 5,280 ft=1.00 mile ,how many miles are in 50,000 ft?

**English grammar**

That's exactly what I've been looking for! Thank you!!

**English grammar**

If it's describing someone then it's a participle. Your explanations always make sense. Thank you so much!

**English grammar**

Identify the verbal in this sentence as infinitive, gerund or participle. The old woman slept, not realizing she was no longer poor. I'm not sure if this is a gerund or a participle. "Not realizing" seems to be describing the old woman. I can't see how it ...

**English grammar**

Thank you very much!

**English grammar**

Identify the verbal in this sentence as infinitive, gerund or participle. They cried, but there was none to save them: even unto the LORD, but he answered them not. (Psalm 8:41) I chose infinitive because "to save them" looks like an infinitive that functions as an ...

**English grammar**

Thank you so much for your help!

**English grammar**

I think the second choice should be -The sentence contains a noun clause with a gerund inside it. Am I right?

**English grammar**

Select all the statements that apply to the sentence below. She did not believe that he actually knew the rules of bowling. -The sentence contains a gerund. <Yes, because of "bowling" -The sentence contains a present participle. -The sentence contains a past ...

**algebra**

A country's population in 1993 was 171 million estimate the population in 2012 using the exponential growth formula round your answer to the nearest million?

**physics**

If you do 500J of work to elevate a bucket of water, what is its gravitational potential energy relative to its starting position? 500*10=5,000 5,000/500=10

**Statistics**

Anger and Snap Judgments Read the article entitled “Anger Can Cause Snap Judgments” and answer the following questions. ANGER CAN CAUSE SNAP JUDGMENTS Anger can make a normally unbiased person act with prejudice, according to a forthcoming study in the journal ...

**social studies 8th**

Salted Caramel is correct!

**Math**

a right triangle can be isosceles triangle

**p.e**

Gabby 100%, Ty Gabby!

**History**

b

**Fluid Mechanics**

A cylinder with internal diameter of 5cm and 15 cm high is filled up with an unknown substance. The mass of the cylinder is 4.6 kg which is 300% of the unknown substance mass. Determine the density and the specific gravity of the unknown substance.

**Fluid Mechanics**

A cone with base radius of 5 cm and height of 20 cm is filled with oil with specific gravity of 0.85. Determine the dimension of cubic steel which its weight is equivalent to the oil weight. Steel Specific Gravity is 7.1

**math(urgent)**

i also don't know what it means by unit of sale.so to solve this question no need calculate unit of sale right

**math(urgent)**

What is the value of the variable cost ? If the break even point is $ 130, the fixed cost is $ 330, selling price per unit is $ 25,and unit of sell is $50. (3 marks)

**Statistics**

0.4332

**MATHS**

walking at 3/4 of his usual speed, a man is late by 2.5 hrs. What is he usual time?

**maths**

A water tank has the shape of a rectangular prism of base 50 cm2. This tank is being filled at the rate of 12 liters per minutes. Find the rate at which the height of the water in the water tank increases; express your answer in millimeters per second.

**MATHS**

Two different schools (A and B) have the same number of pupils. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. Find the ratio of the boys in school A to the girls in school A.

**MATHS**

Thanks Ms. Sue The answer given is 1/6???

**MATHS**

4 girls shared a pizza equally for lunch. If one of them gave away 1/3 of her share, what fraction of the pizza had she left? 1. 1/12 2. 1/6 3. 1/4 4. 2/3

**Grade 5 Maths**

A coin box contained some twenty-cent and fifty-cent coins in the ratio 4:3. After 20 twenty-cent coins were taken out to exchange for fifty-cents coins of the same value and put back in the box, the ratio of the number of twenty-cent coins to the number of fifty-cents coins ...

**Maths- yr 5**

Tom spent 1/5 of his money and 1/4 of the remainder on a magazine. He had $25.80 left. How much was the magazine? A $5.10 B $6.45 C $8.60 D $7.80

**MATHS**

Ken and Sam shared some marbles. The ratio of the number of marbles Ken has to the number of marbles Sam has is 5:3. If Ken's marbles increases by 15%, what percentage of Sam's marbles must be decreased so that the total number of marbles they have remained unchanged?

**MATHS**

Mrs Koh bought some pens, files and erasers. The ratio of the number of pens to the number of files to the number of erasers she bought was 1 : 2 : 3. The cost of each pen and eraser is $2.50 and $0.50 respectively. If she spent $60 on the pens and the erasers, how many files ...

**MATHS**

The ratio of the number of males to the females at a performance is 5 : 7. 1/4 of the males and 3/4 of the females are children. What is the ratio of the number of adults to children? Express your answer in simplest form.

**MATHS**

Donna wants to cut out circular discs of radius 7cm from a cardboard measuring 50cm by 70cm. What is the maximum number of circular discs that can be cut out from the cardboard?

**MATHS**

Stacey spent 1/ 6 of her money on a purse and 7/12 more money on a bag than on the purse. What fraction of her money did she spend?

**MATHS**

Carrie and Luke drank 4/5 of a bottle of juice. Carrie drank half as much as Luke. What fraction of the juice did Carrie drink? Answer given is 4/15

**MATHS**

Mr Wood makes tables with 4 legs, and stools with 3 legs. Nine customers ordered 8 items each. Each order was different. How many legs are needed altogether?

**MATHS**

This bank machine has four rows of buttons 1 2 3 4 5 6 7 8 9 0 Sam has a 4-digit bank number that uses one button from each row. For example his bank number could be 0571. How many different possibilities for Sam's bank number are there? The answer should be 648

**MATHS**

The storekeeper found that if he removed the apples from his box either 2,3,4,5 or 6 at a time there was always one left over. However, if he removed the apples 7 at a time there was no apples left. If the box holds 500 apples, how many apples does the storekeeper have?

**MATHS**

The sum of three numbers is 1313. The sum of two of the numbers is 450. What is the third number?

**MATHS**

24 1c coins are set out in a row on a table Then every 2nd coin is replaced by a 2c coin every 3rd coin is replaced by a 5c coin every 4th coin is replaced by a 10c coin every 5th coin is replaced by a 20c coin every 6th coin is replaced by a 50c coin and every 7th coin is ...

**MATHS**

A pie is cut into two equal parts. The first part of the pie is shared between Abdul and Kate. Kate has 3 times as much as Abdul. The second part of the pie is shared between Sarah and Ron. Ron has 3/5 as much as Sarah. The mass of Sarah's share of the pie is 200 grams. ...

**maths**

Alan is using matchsticks to make isosceles triangles. Isosceles triangles have at least two sides the same length.How many different single isosceles triangles can he make with 45 matchsticks, using all the matchsticks each time? The answer is 11, but I can only work out 7, ...

**MATHS**

lf you added a fifth of one and a quarter to one and a quarter, what would the answer be ? ..... The answers is 1 1/2 have tries 0.2 + 0.25 + 0.75 = 1.20 or 1 1/5 ???? 0.2 + 0.75 + 1 + 0.25 = 2.20 ??? Please help!

**Business Math**

1. Lee Holmes deposited $16,700 in a new savings account at 6% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $41,700 at 6% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s account? 2.Bill Moore...

**MATHS**

This question has mentioned 'pattern of numbers', does that means not just do simple calculation from left to right OR there is a fast way to solve this question, please help. Look at this pattern of numbers. 7x 11 x 13 x 1 = 1001 7x 11 x 13 x 2 = 2002 7x 11 x 13 x 3...

**physics**

A constant force of 58.3 N, directed at 31.7 degrees form horizontal, pulls a mass of 11.9 kg horizontally a distance of 2.77 m. Calculate the work done by the force.

**statistics**

It is 40% the correct answer

**BIO**

If 10 DNA template molecules are used and 20 cycles of PCR, how many copies of a template would be amplified? I am pretty sure I cannot use 2^n (n equals the number of amplification cycles)because I don't have a single molecule of starting DNA template. How do I do this?

**physics**

A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 50.0°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Find the dispersion of the...

**Chemistry**

The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.25 pounds of butane (fuel value is 10.85 kcal/g) is used to heat 120.0 kg of water at an initial temperature of 21.2 °C...

**math**

6/8

**physics**

You probably have to times it by how high your lifting it off the ground and then divide by 100.

**math**

divide 1.702 by .06 gave answer correct to two decimal places.

**Ph CHEM**

I did it and got 10 and it is saying that its incorrect

**Ph CHEM**

A solution is found to contain 1 x 10-4 OH− ions, determine the pH of this solution. I did this problem and got 4 but it is not going in as correct. -log(1*10^-4)=4

**yetf8edfueidcyt87e**

a farmer wishes to fence off a rectangular field with 1,000 feet of fencing.if the long side of the field is along a stream, express the area of the field as a function of its width

**college geometry**

if triangle mnp approximate triangle srt with proportionality factor k, show that if ma and sb are altitudes of the given triangles, then ma = ksb in

**Chem- Percent Yield**

When HgO is heated, it decomposes into elemental mercury and diatomic oxygen gas. If 42.9 g of Hg is obtained from 70.1 g of the mercuric oxide, what is the percent yield of the reaction?

**chemistry**

Determine the concentration of a solution of Mg(NO3)2 given the precipitate formed is 2.97 g and there are 50mL of Mg(NO3)2 and 50 mL of NaOH. Please show all work for each step clearly