Pre-Calculus

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Math Question In a group of 17 horses, some are 8 years old
Math QuestionIn a group of 17 horses, some are 8 years old and the remainder are 11 years old. The total of their ages is 172. How many horses are 11 years old?… read more
rajeevanpillai
Master's Degree
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The ages of a group of 129 randomly selected adult females
The ages of a group of 129 randomly selected adult females have a standard deviation 18.2 Assume that the ages of female statistics students have less variation than ages of females in the general​ po… read more
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Master's Degree
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In order to conduct an​ experiment, 5 subjects are randomly
In order to conduct an​ experiment, 5 subjects are randomly selected from a group of 39 subjects. How many different groups of 5 subjects are​ possible?The number of possible different groups is? ​(Ty… read more
rajeevanpillai
Master's Degree
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A central atom in a molecule that has a trigonal planar
A central atom in a molecule that has a trigonal planar electron group geometry has a: Group of answer choicessp hybridizationsp2 hybridizationsp3 hybridizationsp4 hybridization… read more
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A scientist wants to research the potential spread of germs
A scientist wants to research the potential spread of germs by contact. She knows that the number of possible handshakes within a group of people is given by the equationH=1/2 (n squared -n)8 people a… read more
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A scientist wants to research the potential spread of germs
A scientist wants to research the potential spread of germs by contact. She knows that the number of possible handshakes within a group of people is given by the equationH=1/2 (n squared -n)Everyone a… read more
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A group of students who are taking or have taken online
A group of students who are taking or have taken online classes were surveyed to find out their preference for online versus traditional classes and their age group. The following table shows the resu… read more
akch2002
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A group of students who are taking or have taken online
A group of students who are taking or have taken online classes were surveyed to find out their preference for online versus traditional classes and their age group. The following table shows the resu… read more
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At Homeproducts"R"Us, The sticker price for a GrassLashing
At Homeproducts"R"Us, The sticker price for a GrassLashing Mower is \$356.89. After a month the store decreased the price by 28%. What is the new sticker price? Group of answer choicesA) \$256.96B) \$99.… read more
Sandhya_sharma
Master's Degree
Master's Degree
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The State legislature passes a bill that pledges to cut
the State legislature passes a bill that pledges to cut property taxes by 7.5% each of the next 4 years.What will the overall percent reduction of property taxes be after 4 years?Group of answer choic… read more
Sandhya_sharma
Master's Degree
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On a poultry farm eggs are packed in cartons. Each carton
On a poultry farm eggs are packed in cartons. Each carton contains 12 boxes and each box contains 15 eggs of mixed size (small, medium and large). On the farm 1 out of 9 eggs is large and the packing … read more
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Bachelor's Degree
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An individual is teaching a class on Excel Macros. The
An individual is teaching a class on Excel Macros. The individual plans to break the class up into groups of 4 and wants each group to have 2 exercises to practice on, with no group doing the same exe… read more
Sandhya_sharma
Master's Degree
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If one person has a 25% chance of getting a disease by age
If one person has a 25% chance of getting a disease by age 70, what is the probability of one in a group of 4 getting cancer by that age? I am thinking it should be 1/4 * 4, but that does not seem rig… read more
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I have a math question involving quality assurance. If I'm
I have a math question involving quality assurance. If I'm evaluating three different groups of varying sizes and counting the number of defects, how do I tell the actual impact of each group overall?… read more
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A. Below are two patterns of numbers in groupings called Newton
A. Below are two patterns of numbers in groupings called Newton and Einstein. You will notice that the numbers 14 and 32 are in both patterns. Find the next three numbers that would also be in both pa… read more
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Hi I need some help with the following. 1. Fin the greastest
Hi I need some help with the following. 1. Fin the greastest common factor for the group of numbers. 28,12,24. 10. Factor by grouping. 5z^2+25z-az-5a=… read more
Scott
Master's Degree
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I need some help with the following algebra problems. 1.
I need some help with the following algebra problems. 1. 8b^2+2b= 2. Factor 5x^5-25x^3= 3. Factor by grouping 4st+10t-10s-25= 4. Calculate 7[4+(9^3)]= 5. Factor by grouping 9z^2+27z-az-3a= 6. Factor b… read more
Sandhya_sharma
Master's Degree
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2. Find the greastes common factor for the list of terms. 70x^3,110x^5,60x^9. 3.
2. Find the greastes common factor for the list of terms. 70x^3,110x^5,60x^9. 3. Complete the factoring 3y+30=3( ) 4. Factor 6s^2+3s 5. Factor out the greastest common factor. 9x^4-72x^3+45x^2 6. Fact… read more
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