# Posts by miki

Total # Posts: 103

**math**

In a class,30 students passed in math,20 passed in physics and 8 passed in both. How many students failed in both if the class has 45 students?

**Calculus 2**

Can someone please show and explain step by step how to evaluate this integral? Problem #1)∫ 1/(x^3+x^2+x+1) dx This is what I got so far. I am not sure what to do thereafter after doing partial fraction decomposition (in which I got A = 1/2, B = 1/2, and C = 1/2) 1/(x^2...

**Physics**

I don't really understand how to do the problem with just the constants...or in formation of a formula. Much help on explaining how to do it would be much appreciated. 1) Two equal but opposite charges re separated by a distance d. Determine a formula for VBA = VB – ...

**math**

write two consecutive perfect square closest to 20. estimate the value of square 20 . square your estimate. use this value to revise your estimate. keep revising your estimating until the square of the estimate is within 1 decimal place of 20. my eng is limited, can anyone ...

**Math**

Rectangular cake pans X and Y are similar. The ratio of the width of pan X to the width of pan Y is 3 : 4. The length of pan X is 10 inches, and its width is 5 inches. What is the perimeter of pan Y ?

**math**

In a shipment of 50 calculators,4 are defective. Two calculators are randomly selected and tested. What is the probability that both are defective if the first one is not replaced after being tested?

**math**

A nationwide survey showed that 65% of all children in the U.S. dislike eating vegetables. If three children are chosen at random, what is the probability that all three dislike eating vegetables? Write as a percent to the nearest tenth.

**Chemistry**

Can someone show and explain to me step by step how to do the problems? I feel like I am doing it incorrectly. a) The solubility of PbI2 is 3.67 mg per mL. What is the Ksp? b) Three drops of 0.20 M potassium iodide are added to 100.0 mL of 0.010 M lead nitrate. Will a ...

**math**

Cindy makes a base monthly salary of $3900. As a vendor, she must also sell $36000 worth of items per month. She also makes a 6% commission on all sales beyond the monthly quota. There is also an additional 2% bonus on top of the normal commission rate for any sales beyond $...

**math**

Brett made a scale drawing of a rectangular room in his house. The actual length of the room is 12 4/5 ft. The scale used to make the drawing was 1/4 in.=1 ft. What is the length, in inches, of the room on the drawing?

**MATH**

john mixed 3/4 liter of yellow paint with 1 1/4 liters of red paint to make 2 liters of orange paint. . He needed more orange paint. . To make a new batch of orange paint, he used exactly 1 liter of red paint. Using the same ratio, how many liters of yellow paint should john ...

**math**

15 INCREASED BY T IN ALGEBRAIC EXPRESSION my answer is t + 15 9 dollars less than b in algebraic expression. My answer is b - 9 am i right or wrong?

**math**

emily's age divided by 3 in algebraic expression? My answer is e / 3 am i right or wrong? the product of r and 8 in algebraic expression? My answer is 8 * r am i right or wrong?

**math**

4x+24 am i right, if not please tell me your answer.

**math**

2/3(6x + 12)simply the expression My answer is 12x + 24 am i right or wrong

**math**

(3+5)exponent 2? My answer is 64 am i right, if not please tell me how and why?

**6th grade math**

Is -15 equal then to 15 or less then? My answer is less then an i right if not please tell me how and why?

**math**

find the equivalent fraction of 56/70 with a)numerator 4 b)denominator 10 please show the steps

**math**

find the equivalent fraction of 56/70 with a)numerator 4 b)denominator 10 please show the steps

**math**

find the equivalent fraction of 56/70 with a)numerator 4 b)denominator 10 please show the steps

**math**

thank you so much

**math**

but how please show the steps

**math**

find the equivalent fraction of 56/70 with a)numerator 4 b)denominator 10

**math**

find the equivalent fraction of 56/70 with a)numerator 4 b)denominator 10

**6th grade math**

a toy company manufactures miniature cars. They sell 15 miniature sports cars in a box. They sell 12 miniature trucks in a box. Mrs. Murphy wants to buy an equal number of sports cars and trucks. What is the least number of miniature sports car she can buy? my answer is 60 am ...

**6th grade math**

Derek wrote 8,9,12 and 15 on the black board. Which pairs of theses numbers are relatively prime? my answer is 8,and 9. and 8,15. am i right if not please tell me the answers.

**Algebra**

How do I solve 5n+8(-6n-2) explain your answer.

**algebra**

Given f(11)=11 and f(x+3) = (f(x)-1)/(f(x)+1) for all x, find f(2000)

**math**

Benny drew an octagon with two right angles. What is the sum of the measures of the other angles? A 100 degrees B 900 degrees C 800 degrees D 620 degrees my answer is D

**science**

A storm forms over the central part of the u.s. What direction will the storm move? A towards the north B towards the south C towards the west D towards the east

**SOCIAL STUDIES**

nevermind, I got them, and I got them right on the homework too ;D

**SOCIAL STUDIES**

4. What did the construction of the Berlin Wall do to the country of Germany? (1 point) The Berlin Wall surrounded the country of Germany and created a unified state. The Berlin Wall divided East and West Germany. The Berlin Wall symbolized national pride in Germany. None of ...

**science**

12. The specific heat of copper is 0.385 J/g • °C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of copper from 7°C to 29°C? (1 point)Q = 0.385 J/g • °C x (29°C – 7°C) Q = 0.75 g x ...

**math (Ms.Sue)**

a bag of 25 marbles contains 8 red marbles.if one marble is picked from the bag,what is the probability that it is red in percent? My answer is 32% am i right?

**math**

A box of pens contains 54 pens with black ink 36 with blue ink and 30 with red ink if you took 20 pens from the box how many would you expect to have blue ink black ink red ink?

**math(ms.sue)**

15 is 30% of what number in percent? My answer is 4.5 am i right?

**science**

Which of the following would most likely cause rising air? A warm air and low pressure B cold air and low pressure C warm air and high pressure D cold air and high pressure Please give us the answer.

**science**

Which of the following would most likely cause rising air? A warm air and low pressure B cold air and low pressure C warm air and high pressure d cold air and high pressure

**science**

Which of the following has the greatest effect on the formation of rain or snow? A cloud cover B humidity C air pressure D temperature

**maths**

S T 1 7 2 9 3 11 4 13 5 15 How do I write an equation to represent the function please I need you help.

**5th grade maths**

Thank you very much for helping the questions.

**5th grade maths**

x y 36 10 33 9 30 8 27 7 24 6 How do I write an equation to represent the function? Please I need you help.

**math (Ms.Sue)**

your room has 2 windows.Each window occupies 11.76 square ft of wall space.if the windows are each 2.8 ft wide,how tall is each window? my answer is 4.2 ft,am i right? if not tell why.

**Math**

The room you want to paint has 2 doors,each 6.5 ft tall and covering 20.8 square ft.What is the width of each door? My answer is 3.2 ft,am i right?if not please explain.

**math (Ms.Sue)**

15 width by 45 length

**maths**

A pick up truck is carrying 500 pounds of cargo. When empty, the truck weighs 2 1/2 tons. What is the weight of the truck and its cargo in tons? Is this answer right 1250tons.

**maths**

can you please tell me the answer????

**maths**

A rug covers 1/4 of the floor. The area of the rug 10ft . What is the area of the floor? my answer is 2 1/2 ft,am i right if not please explain?

**science**

What does a maple tree do for a community? A. it creates energy B. It creates food C. It looks nice D. it stores water My answer is B.

**science**

is the answer producer

**science**

What term almost always describe top consumers. A)herbivores B)omnivore C)carnivores D)decomposer

**science**

My answer is it looks nice

**science**

What does a maple tree do for a community.

**math**

My answer is 120 degree.

**math**

Which of these is the measure of an obtuse angle? A)45 degree B)90 degree C)120 degree D)180 degree

**science**

Is the answer C)

**science**

A pig eats nuts,berries,fungi and insects.What type of consumer is a pig A)producer B)consumer C)omnivore D)decomposer

**science**

The answer is A)

**science**

which abiotic factor separates marine ecosystems from river ecosystem? A)sunlight B)salt C)sand D)algae

**MATH HELP!!!!**

3000 exercise books are arranged in 3 piles.the first pile has 10 more books than the second pile.the number of books in the second pile is twice the number of books in the third pile.how many books are in the third pile?

**math**

3000 exercise books are arranged in 3 piles.The first pile has 10 more books than the second pile.The number of books in the second pile is twice the number of books in the third pile.How many books are there in the third pile?

**math**

There were 761 campers at a campground. After a number of campers went home, 659 campers remained at the campground. How many campers went home? 761+659 = 1420 am i right?

**science**

5TH

**science**

THANK YOU

**science**

What type of information does a map's scale provide? A. location B. symbols C. distance D. vegetation I can't decide which answer is right Is it B or C.

**science**

A large area of land is cleared to build a new school. How does this affect the area? A. It increases soil erosion. B. It decreases soil erosion. C. It increases ground water. D. It decreases surfaces runoff. I say Its b construction workers found the way to reduce soil ...

**science**

is it b?

**educating young children PART3**

your answer is wrong

**science**

is the answer B

**science**

My answer is A

**science**

A large area of land is cleared to build a new school. how does this affect the area. A)it increases soil erosion B)it decreases soil erosion C)it increases groundwater D)it decreases surface runoff

**SCIENCE HELP!!!!!**

Which of the following is formed by a dam? A)a flood B)a delta C)a reservoir D)a drought My answer is A,am i right?

**science**

My answer is D)

**science**

Which of the following would result in the greatest erosion? A) creek flowing down a hill B) water sitting in a lake C) rain soaking into the ground D) large river flowing down a mountain

**English**

the poem "At the Lunch Counter" is by Alden Nowlan. I am having difficulty understanding it. any help would be great.

**English**

the poem "At the Lunch Counter" is by Alden Nowlan. I am having difficulty understanding it. any help would be great.

**English**

does the poem "At the Lunch Counter" have aliteration, assonance, metaphors, similes, onomatapoeia, imagery? I have found it has a few but i'm not sure. I also am not sure about the meaning of the poem and can't find any information about it. Any help would ...

**English**

Does it have assonance, aliteration, repetition, rhyme, metaphor and onomatopoeia? I have found that it has imagery and onomatopoeia but i'm not sure of anything else. i am also having problems understanding it. Please help

**English**

I need to analyse the poem "At the Lunch Counter" by Alden Nowlan. Can anyone help me. It is for a year 8 exam.

**MATH HELP**

red is 5, blue is 15 am i right, thank you....

**MATH HELP**

my answer is red 20 the blue is 60.

**MATH HELP**

There are 20 red and blue pens in abox. There are 3times as many blue pens as red pens? How many red pens are there? How many blue pens are there?

**MATH PLEASE HELP!!!!!**

thank you!!!!!!!

**MATH PLEASE HELP!!!!!**

I think that the answer is 6 because 12 * 3 =36 then you add 12 to 36.48/ by 8 is 6. Am i right?

**MATH PLEASE HELP!!!!!**

Ms. Goldfarb has 12 turquoise beads and 3 times as many amber beads. She is making 8 pins with the same number of beads on each pin. How many beads will be on a pin?

**MATH PLEASE HELP!!!!!**

thank you

**MATH PLEASE HELP!!!!!**

Carmen bought 3 box of pencils. Each box has the same number of pencils. She used 5 pencils and 7 pencils left over. How many pencils were in each box?

**Math HELP!!!!!!**

thank you

**Math HELP!!!!!!**

A pancake shop serves 3 kinds of pancakes,5 kinds of syrup,and 2 kinds of juice.How many different breakfast combinations are possible with one of each kind of item?

**math**

Last year it rained on 63 days in mudville.There were 7 times as many days of rain in mudville as in desert hills.How many days did it rain in desert last year?

**Physics- Angular Momentum**

Thank you so much!

**Physics- Angular Momentum**

A long thin rod of mass M=2.00 kg and length L=75.0 cm is free to rotate about its center. Two identical masses (each of mass m = .45kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10.0 rad/s. A) ...

**physics**

A small motor is mounted on the axis of a space probe with its rotor (the rotating part of the motor) parallel to the axis of the probe. Its function is to control the rotational position of the probe about the axis. The moment of inertia of the probe is 6000 times that of the...

**Physics**

A ball (mass = 250 g) on the end of an ideal string is moving in circular motion as a conical pendulum. The length L of the string is 1.92 m and the angle with the vertical is 37 degrees. A) What is the magnitude of the torque (N m) and direction (from the listed answers) of ...

**Recycling speech**

LOL

**Recycling speech**

TROLL

**Recycling speech**

troll

**Recycling speech**

troll

**chemistry**

Thank you