# Posts by sai

Total # Posts: 105

**math**

if 2x+y =14 and 4x+y = 20 , what is the value of 3x+y =?

**physics**

The velocity of a vehicle is measured at two distinct points in time and found to be 30 m/s at 1.0 s and 10 m/s at 2.0 s. Find the acceleration (in m/s2) and initial velocity (in m/s) to complete the equation of motion for the velocity of the vehicle. v(t) = t + Round your ...

**physics**

A rocket is fired vertically and reaches a speed of 34.3 m/s in half a second. One and a half seconds later the rocket’s speed is 19.6 m/s. Find the acceleration (in m/s2) and initial velocity (in m/s) of the rocket. Complete the equation of motion for the velocity of the...

**physics**

An engineer uses a bolt to connect a joint. The force provided by the bolt F is a function of the external load P that it must bear. The bolt applies a force of 200 lb against an external load of 100 lb. The same bolt must apply a force of 400 lb against an external load of ...

**physics**

A spring is manufactured with a pre-load. A force of 34.5 N compresses the spring by 1.5 cm. A force of 57.0 N stretches the same spring 0.03 m. Find the spring constant k (in N/m) and pre-load Fi (in N) that satisfies the linear equation describing this force, F = kx + Fi. F...

**physics**

A ball is thrown upward and has a velocity of 67.8 ft/s after 1.0s. After 3.0s, the ball's velocity is 3.4 ft/s. Find the acceleration (in ft/s2) and initial velocity (in ft/s) of the ball. Complete the equation of motion for the velocity of the ball: v(t) = t +

**math**

graphing the equations

**math**

Reflecting functions over the x-axis if(x)=-2/3x+2 ; f(x)=2/5x-3

**math**

graphic pairs function in the same set of axis (1 quadrant) g(x)=3/7x+6&h(x)=3/7-3

**algebra**

A copper conductor 130metrrs long hasa resistance of 4.30ohms. If the resistivity of a copper is 1.42*10ohms determine the cross sectional area of the conductor in mmsquared

**math**

my teacher said answer will be 162 i dont understand how since i got 702 . please help

**math**

The tires mary wants to buy for her car cost $200 per tire. A store is offering the following deal: Buy 3 tires et the 4th tire for 75% off ! Mary will buy 4 tires using the deal . The sales tax is 8%. how much will mary save using the deal versus paying the full price for all...

**algebra**

f(x)=x^2 and g(x) =|x| then f+g=?

**math **

what is the cost of nine ounces of cheese at $.80 per pound? can anyone solve it and explain me. thank you.

**math**

thank you so much

**math**

can you please solve it and explain me . thank you.

**math**

what is the cost of nine ounces of cheese at $.80 per pound?please help 16 ounces = 1 pound 9 ounces = 0.5625 pounds

**math**

what is the cost of nine ounces of cheese at $.80 per pound?

**math**

an artist buys a rectangular piece of paper for his artwork. he cuts the piece of paper into 8 equal strips. he uses 6 strips of paper and keeps the rest. what fraction of the rectangular piece of paper did he use?

**math**

Rose uses 1/8 pound of beef for each taco she makes. if she wants to make 12 tacos, how much beef will she need

**math**

Mrs Smith uses 5 lemons to make 2/3 gallon lemonade. How many gallons of lemonade can Mrs Smith make with 15 lemons

**Math**

there are six different kinds of fruit pies in a baker. Each pie is the same size and is cut into 8 equal slices. Mr. Javier buys a slice of each pie. How many pies did Mr. Javier buy altogether

**Math**

Find the units digit of 93 to the power of 19. I don't know what to do.

**Math**

How many multiples of 7 are there between 100 and 200? I got 14.

**Math**

Find the GCD of 36, 27, and 45.

**Math**

What percent of 20 is 13?

**Math**

The population of a town increases by 25% during 1991. By what percent must it decrease the following year to return to the population it was at the beginning of 1991? I thought the answer was 25% but i don't know for sure.

**chemistry**

Analysis of a compound yields the following percentage composition.65.03 of Ag;15.68Cr;19.29 O. the simplest formula of the compound is?

**chemistry**

The percentage of nitrogen in magnesium nitride is.?

**Physicis**

What is critical angle of refractive index is 1.5

**physics**

An object kept at a distance 12cm.infront of concave mirror.it forms areal image four times larger than the object.calculate the distance the image form in mirror

**Math**

find the brackets in the right place to make the statement true. in the expression 4*15-11+8-2=20

**Math**

find the brackets in the right place to make the statement true. in the expression 4*15-11+8-2=20

**Math**

4*15-11+8-2 =20

**physics**

A stone thrown upward at the top of the tower reaches the ground after 5 sec. A second stone is thrown down with the same speed and reaches ground in 3 sec. What is the height of the tower

**physics**

Two forces 5N &10N are acting at an angle of 120° between them. Find the resultant force in magnitude and direction.

**AP US Goverment & Politics**

Federal bureaucracies' main source of power derives from: The power and role of political appointees who lead agencies. Their ability to regulate the economy. Their service as advisors to the President. Their development of the federal budget. Their responsibility to ...

**math**

great thank u

**math**

2 2/3 = 8/3 = 2.666 1 1/4 = 5/4 = 1.25 so 2.666 * 1.25 = 3.33 is it correct

**math**

A standard size of a certain bin holds 2 2/3 gallons . The larger size of that bin is 1 1/4 times larger. How many gallons does the large bin hold ?

**math**

24 3/8 = 195/8 =24.375 4 7/8 =39/8=4.875 24.375/4.875 = 5 pieces is it correct

**math**

a board was 24 3/8 inches long. A worker cut it into pieces that were 4 7/8 inches long. The worker cut the board into how many pieces?

**Math**

a car uses 3 1/8 gallons of gasoline per hour when driving on the highway . how many gallons will it use after 4 2/3 hours?

**math**

david worked 7 1/3 hours today and planted 11 trees. It takes him about the same amount of time to plant each tree. How long did it take him to plant each tree? It took him _____hour to plant each tree.

**Math**

1 dandelion = 4 wildflowers 3 ferns = 8 wildflowers How many dandelions equal 12 ferns?

**maths**

steps for square root spiral

**Math**

s0lving One step equation 5 1/4 - h = 2 3/4

**Math**

Solving one step equation 2 1/2 + b = 3 1/4

**newtanion mechanics**

Find the center of mass of a uniform circular ring of mass M and radius R? (R is your radius in metre)

**newtanion mechanics**

A child slides down a water slide of a height h. Calculate final velocity of the child?

**math**

Maria plans to fill the pots in her garden with soil and plant food. Maria has 8 1/4 quarts of soil and 1 1/2 quarts of plant food. Part A Each pot requires 3/4 quart of soil. For how many pots does Maria have enough soil? Show your work. Answer : 11pots Part B Each pot ...

**math**

thank you

**math**

A rectangular flower bed has an area of 3 1/2 square yards. The width of the flower bed is 3/4 yard. What is the length of the rectangular flower bed?

**math**

thank you

**math**

A baker uses 2 5/6 pounds of butter to make a batch of cookies. On a particular day, thebaker used 8 1/2 pounds of butter to make cookies. How many batches of cookies did the baker make that day?

**MATH**

If 40% of a number is 56, what was the original number? PLS EXPLAIN THANK YOU

**MATH**

Rachel sold a total of 8/10 pound of apples and berries at farmer's market . The Weight of the apples is 3/4 of the total weight of the fruit. What is the weight of the berries ? A. 1/20 pounds B. 1/4 pounds C. 1/2 pounds D. 3/5 pounds pls show the work n explain THANK YOU

**MATH**

Mam frankly still I did not get B. 2 3/10 answer still getting A. 2. 1/6 .

**MATH**

MAM CAN U PLS EXPLAIN ME BY SHOWING THE WORK PLEASE THANK YOU

**MATH**

Mam I will be very greatful to you if u can explain me the solution . Or show the work I tried , always I got wrong answer I got A. 2 1/6 I did 1 2/3 3 5/6 3 5/6 - 1 4/6 2 1/6 I know i am wrong but how u got 2 3/10 pls explain n show the work I will understand . So kind of u ...

**MATH**

IN ANSWER BOOK IT SAYS OPTION B. 2 3/10 THATS WHY IAM CONFUSSED.

**MATH**

SORRY MAM I DID NOT UNDERSTAND SINCE THE ANSWER SHOULD BE AMONG THE BELOW : ANY ONE OPTION A. 2 1/6 B. 2 3/10 C. 2 1/3 D. 5 1/2

**geometry d the sspeed of the bicycle in m/s**

a bicycle wheel has 77cm in diameter and makes revolution per second .find the speed of the bicycle in m/s

**math**

118 ft = ________yd____________ft . 21 ft 11 in =_______in please explain how to solve these sums. thank u

**math**

metal mercury at room temperature is a liquid. melting point is 39 degree celsius.freezing point of alcohol is 114 degree celsius.how mu7ch warmer is the melting point of mercury than the freezing point of alcohol

**English**

Thank you for your help Reed!!!

**English**

Oh I must've read wrong. I thought his sexual pleasures had no meaning whatsoever. So would it be B?

**English**

For sternberg, Don Juan's alleged serial sexual conquest illustrates: A)infatuation B)puppy love C)empty love D)fatuous love Im between A and D. Leaning towards A

**English**

Which phrase is most likely to be part of an effective thesis statement? A) i think B) therefore C) i believe D)in my opinion My coice is B. Is that right?

**English**

The major problem in writing an argument based on inductive reasoning is the possibility of flawed or spurious: A)inference B)syllogism C)presumption D)bias Is it D?

**English**

the major problem in writing an argument based on inductive reasoning is the possibility of flawed or spurious: A)inference B)syllogism c)presumption D)bias Is it D?

**English**

writing a comparison contrast essay, you should be addressing any of these purposes except which one: A)expressing an idea B)informing C)narrating D)persuading I chose D. Is it right?

**math**

Rachel wants to carpet the rectangular floor of his basement . The Basement has an area of 864 square feet . The width of the basement is 2/3 its length. What is the length of Rachel's basement.

**math**

Solve this.. ◻ ➕ ◻ ➕ ◻=30 Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15)

**math**

how the quadratic equation is useful in calculating the stopping distance when the breaks are applied to a vehicle?

**chemistry**

We only can make ozone layer by adding 3 oxygen atoms or we cannot

**math**

count by eigths to create a number line for the data that starts at 1 and ends at 3.

**math**

YES The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work . CHART CLASS 1 WEEK # ...

**math**

The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work .

**math**

a number is called a perfect number if it equals the sum of all its factors except itself. for instance , 6 is a perfect number because its factors are 1,2,3 and 6 and 1 + 2 + 3 = 6 .What is the next greater perfect number >

**science**

what is wrong with the statement "you look exactly like your mother"

**math**

Hideki is collecting pennies . Each month in may, june, and july he put 200 pennies in a jug . He put 300 pennies in th jug in August and 300 in September. How many pennies did Hideki put in the jug between May and September ?

**Maths/ Calc**

Answer

**science**

0.042g of Magnesium was reacted with excess HCl at S.T.P. A. Write the equation for the reaction B. How many moles of Mg were used? C. What volume of Hydrogen is produced in this reaction?_

**math**

Lesser

**chemistry**

-15.3

**statistics**

You are conducting an experiment to see if a given therapy works to reduce test anxiety in a sample of college students. A standard measure of test anxiety is known to produce a = 19. In the sample you draw of 86 the mean is equal 17.5 with standard deviation s = 10. a- ...

**science**

hydrogen and oxygen combine in the ratio of 1:8 by mass to form water.what mass of oxygen gas would be required to react completely with 3grams of hydrogen gas?

**physics**

IN PHYSICS TENTH CLASS ADDRESS OF AN ELECTRON

**math**

how to write 2nd may 2014 ...General knowlegde- How to writ

**CHEM**

Calculate q when a system does 54 J of work and its energy is increased by 61 J?? I know the total change in energy of a system is "q + w", but I don't don't how to apply this.

**chemistry**

How many ml of water at 10 degrees c must be added to 75 ml of water at 35 degrees c to obtain a final temperature of 19 c?

**5th grade**

1332

**Math**

There are 13 flavbors at a local ice cream parlor. Is the number 13 a prime number or a composite number? If it is composite, write the number as the product of prime numbers

**math**

Cruz and his friend, Penny need to determine what numbers are prime and what numbers are composite for homework assignment. Cruz says that the number 5 is a composite number because it has the factors 2 and 2.5. Explain what is wrong with his reasoning

**chemistry**

Just..... don't get it A column packing for chromatography consists of a mixture of two types of particles. Assume that the particles in the batch being sampled are spherical with a radius of 0.5 mm. 36% of the particles appeared to be pink and are known to have a ...

**math**

Find the volume of a cone with radius 26.8 inches and height 31.7 inches. Round the answer to one decimal place.

**6th grade math**

The area of each square is twice the area of the next smaller square drawn in it. if the area of the smallest square is 3 square cms. what is the area of the largest square

**3rd grade math**

examples of quadrilateral find at home

**physics**

what are the different layers of fiber optics