Math

Question 1

What is an acute angle

Answer 1

lesss than 90 degrees

Question 2

what is a right angle

Answer 2

90 degrees

Question 3

what is an obtuse angle

Answer 3

more than 90 degrees

Question 4

what is a straight angle

Answer 4

180 degrees

Question 5

what is a supplementary angle

Answer 5

a + b = 180 degrees

Question 6

what is a complementary angle

Answer 6

x + y = 90 degrees

Question 7

What is a bisected angle

Answer 7

2g = h degrees

Question 8

what is the formula for circumference of a circle

Answer 8

2pier or pie*d

Question 9

what is the formula for area of a circle

Answer 9

pie*r^2

Question 10

what is the formula for arc length of a of an arc

Answer 10

xdegrees/360(2pier)

Question 11

what is the formula for sector perimeter of a arc

Answer 11

2r+x/360(2pier)

Question 12

what is the formula for sector area of a arc

Answer 12

x/360(pie*r^2)

Question 13

what does tangent mean

Answer 13

perpendicular to something

Question 14

what is the formula for an arithmetic sequence

Answer 14

an=a1+d(common difference) *(n-1)

Question 15

how do you find the nth term of a geometric sequence

Answer 15

dividing any term by the term before it gets you the ration

Question 16

How do you find the nth term of a repeating sequence

Answer 16

Figure out how many numbers it repeats for

Find the remainder of the number you’re trying to find/ the number of how long it repeats for

find the term that corresponds to the remainder

Question 17

volume of a rectangle

Answer 17

lwh

Question 18

surface area of a rectangle

Answer 18

2lh+2lw+2*hw

Question 19

Volume of a cylinder

Answer 19

pier^2h

Question 20

How do you, generally, find the surface area of a 3d shape

Answer 20

sum of areas of all the faces

Question 21

volume of a circular cone

Answer 21

1/3pieh*r^2How

Question 22

how do you find a diagonal of a 3d shape

Answer 22

USE THE PYTHAGOREAN THEOREM. map it out in your head.

Question 23

How do I find the numbers for a ration given like 2:3

Answer 23

2/3 = x/given # and cross multiply.

Question 24

what is the rule for a triangle

Answer 24

the two sides, x and y, the third side must be less than x+y but greater than x-y

Question 25

what is the difference of cubes

Answer 25

(a-b)(a^2+ab+b^2)

Question 26

solve this log3 1/81 = what steps do you take

Answer 26

what power do you raise 3 to get 1/81 -4

Question 27

How do you multiply a matrice

Answer 27

to get the top left number of the resultant matrice you would multiply the each number of the first row by each number of the first column and adding those numbers together

Question 28

what are the restrictives for wether or not you can multioply a matricy and what does the dimension of when you do multiply

Answer 28

You can only multiply. matrice with dimensions that have the same inner number. 2x3 and 3x4 the resulting matrice is a 2x4, the outer dimensions

Question 29

how do you find the determinant of a matrice

Answer 29

ad - bc

Question 30

How do you find the expected value of an event / y

Answer 30

value of event * probability of event occuring and adding all of those together depending on how many events you have

Question 31

when do you choose a combination combinatoric

Answer 31

chosen when the role order doesn't matter 2 vs 1 and 1 vs 2 are the same thing

Question 32

when do you choose a permutation combinatoric

Answer 32

chosen when the role order does matter. 2 vs 1 and 1 vs 2 are different values

Question 33

what is the mean and how do you calculate it

Answer 33

the average the sum divided by the number of values you have

Question 34

how do you calculate the median and what is it

Answer 34

the middle number ordered in least to greatest

Question 35

how do you calculate the mode and what is it

Answer 35

it is the number that occurs most frequently. you can sometimes have no mode if there are the same numver of frequencies

Question 36

how do you calculate the weighted average

Answer 36

multiply the average by its weight all added together to get the total average.

Question 37

what is an isosceles triangle

Answer 37

Two sides are equal therefore two angles are also equal

Question 38

How can I re-write log4 x = 3 to solve for x?

Answer 38

4^3 = x

Question 39

what does the equation of a circle equal?

Answer 39

the squared number of the radius

Question 40

what is the man hours equation and what does it tell you

Answer 40

number of people * number of time = the man hours it takes. For example if we had 3 workers complete a house in 10 months, how long would it take for 5 people? we multiply 3 by 10 = 30 and then multiply that by 1/5 to get the amount of time it will take for 5 people to build the same house

Question 41

what is standard deviation

Answer 41

a measurement of how far accumulative data points are away from the mean data points closest to the mean have a smaller standard deviation (2,2,3,3,4,4) while data points farther from the mean have a larger standard deviation (1,2,3,4,5)

Question 42

If there is a perimiter, say 28, and the question asks you how to find the largest area, how do you do that, using formula based?

Answer 42

2l + 2w = 28 and solving for length, l = 14-w A = lw so we can subsitute l in A = 14-w*w then we can find the vertex of the parabola, the middle x point, which gives us w so 7! that means the optimal area is 49

Question 43

What is the formula to type for permutation and combinations

Answer 43

NPr N= total objects R=number of objects chosen at once

Question 44

To find the interior angle sum of a polygon, we can use a formula

Answer 44

(n - 2) x 180 n meaning number of sides

Question 45

from degrees to radians

Answer 45

degrees * by 180 over pie

Question 46

from radians to degrees

Answer 46

radians times 180/pie

Question 47

how do I know if it's whom or who

Answer 47

whom = him who = he

Question 48

what is the law of cosines

Answer 48

C squared equals a squared plus b squared minus 2 ab cos gamma

Question 49

what is the law of sins

Answer 49

sine alpa divided by A equals sin beta divided by b equals sin gamma divided by c

Question 50

How can I solve for averages

Answer 50

An=s(total sum)

Question 51

How do i add vectors

Answer 51

place each reactant on top of one end and connect the new shape