41 Answered Questions for the topic Problems

Problems Chemistry

04/26/20

#### How many grams of iodine will we make from 3.52 g of iodine acid HJO3, acting with sulfuric acid H2SO3

#### How to factor these

-63p^3-72p^2-90
b^2-7b+6
v^3+11+28
4n^2-1
9n^2-30n+25

09/11/19

#### please help me step by step so i may understand this on how to put this together

Copper (Cu) has two common isotopes. One isotope has 34 neutrons and 29 protons, and it accounts for 69.15% of all copper. The other isotope has 36 neutrons and 29 protons and it accounts for...
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09/11/19

#### chemistry problem, explain because I got lost doing this and its not giving me the answer that we have

The atomic mass of chlorine is 35.45 amu. Calculate the mass of the first isotope if it has a % natural abundance of 75.77% and the second isotope has % natural abundance of 24.23% and mass of...
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Problems Prealgebra

09/11/19

#### Maths question problem

I want to know how to solve this the proper way, not by trial and error :)In a town, 10% of the dogs think they are cats and 10% of the cats think that they are dogs. All the other cats + dogs are...
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09/05/19

#### chemistry chemistry

The specific heat of a certain type of cooking oil is 1.75 cal/(g ·°C). How much heat energy is needed to raise the temperature of 2.56 kg of this oil from 23 C to 191 C?

#### Function Questions

1) Given h(x) = x - 4 g(x) = x2 - 6x Find (h + g)(x) 2) Given g(x) = 4x - 4 f(x) = x2 - 2x Find (g * f)(n)3) Given h(n) = 4n - 2 g(n) = -2n +...
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#### Pre-Algebra Word Problems

The owners of a candy store want to sell, for $6 per pound, a mixture of chocolate-covered raisins, which usually sells for $3 per pound, and chocolate-covered macadamia nuts, which usually sells...
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#### Math Project Solving

At a supermarket that sells fruit by the pound, one person bought 3 lb of oranges and 6 lb of grapefruitfor a total of $6, while a second person paid $6.40 for 5 lb of oranges and 4 lb of...
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Problems

09/12/18

#### the sum of 2 integers is 52. find the numbers if one number is 2 greater than the other.

how to do the problem, i dont know how to do the problem

Problems

06/29/18

#### A bar=2i bar-4j bar+5k bar find the magnitude of A bar

physics inrt 1s t year problems

06/27/18

#### A planet subtends an angle of 1.8 degrees as observed from the earth. It’s distance from the earth is 542300km. Length of diameter of planet is?

12340pi km, 27650pi km, 5721pi km or 5423pi km

Problems

06/24/18

#### length of lumber cut into 2 pieces. length of 1 is 3 feet more than the other. length of pieces

A piece of lumber is 15 feet long. It is cut into 2 pieces. The length of one piece is 3 feet more than the length of the other. Find the length of the pieces.

Problems

05/24/18

#### 39000 as royalty invested 5% in bonds and 12% in insurance the total interest is 3910 how much is in bonds

Word problem

05/14/18

#### Physics problem

An electric force is formed by a charged particle q=1.5•10^(-9)C, (1.5 times 10 in the exponent -9).In what distance are placed two equalpotencial areas in vacuum, if their potentials are φ1=45 V...
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Problems

02/12/18

#### When the mass of fertilizer in a bag is reduced by 50g, I need to buy 10 more (bags) to get 36kg of fertilizer. What was the mass fertilizer before reduction?

I have been struggling a lot with this one.

Problems

10/29/17

#### barry buys 200 pieces off stationary for £76. of the 200 pieces off stationary

barry buys 200 pieces off stationary for £76. of the 200 pieces off stationary, x off them are rulers that cost 50p each and y off them are pens that cost 20p each. find how many rulers Barry buys...
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10/24/17

#### If there are 10 backpacks, how many tote bags in the store?

Elaine owns a bag shop. Half of her inventory is made up of tote bags, while a third of the remaining bags are backpacks. The remaining bags are handbags. If there are 10 backpacks, how many tote...
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02/21/17

#### ***7. A lab technician has 40% of a 15% iodine solution. How many gallons of a 40% iodine solution must he add to make 20% iodine solution?

I don't know how to do this please help me

Problems

11/28/16

#### A square is cut into two rectangles so that the sum of the lengths of the perimeters of these two rectangles is 30m

what is the length of thee square in cm

#### Fraction Help 2 Problems

if a/b = 3/2, then 8a equals which of the following?
a. 16b
b. 12b
c. 3b/2
d. 8/3b
20% of 3 yards is how many fifths of 9 feet?
a. 1
b. 6
c. 10
d. 15

Problems Math

09/06/16

#### Statistics

The mean score for Samantha's first six algebra quizzes was 88. If she scored a 95 on her next quiz, what will her mean score be for all 7 quizzes?

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