Question

i need some answers checked

Answer 1

@Mercury

Answer 2

good

Answer 3

for a prism generally the volume = base*height

so calculate the area of the triangle then multiply by the height

Answer 4

area of a triangle = (1/2)bh = (1/2)(8)(20)

then just multiply the height

so volume = (1/2)(8)(20)(20) => plug these in to get the solution

Answer 5

my family and I are gonna watch a movie
I'll try to be on later tonight

Answer 6

okay

Answer 7

any new questions?

Answer 8

yeah

Answer 9

hm not quite

notice how you have a right triangle on the right side

one of the legs is 100 and the other leg is 550/2

calculate the hypotenuse w/ pythagorean theorem

Answer 10

*just had to correct a typo

Answer 11

A?

Answer 12

good

Answer 13

hm not quite

if you treat it as a right triangle, the smaller leg is 9/2 and the hypotenuse is 11.8

solve for the other leg x

Answer 14

10.9?

Answer 15

good

Answer 16

good

Answer 17

good

Answer 18

good

Answer 19

good

Answer 20

good

Answer 21

hm not quite

you have a right triangle with the short leg 32/2, other leg 12

calculate the hypotenuse

Answer 22

20?

Answer 23

good so 20 = your sol'n

Answer 24

hm not quite

you have a right triangle with legs 12/2 (since it's in the middle of the 12 ft beam) and hypotenuse 12, calculate the other leg

Answer 25

17?

Answer 26

(12/2)^2 + x^2 = 12^2

Answer 27

5

Answer 28

remember order of operations

6^2 + x^2 = 12^2

simplifying the exponents

36 + x^2 = 144

solve for x

Answer 29

108

Answer 30

remember the formula gives you the value of x^2 not x so you have to take the square root at the end.

Answer 31

10.4

Answer 32

good so 10.4 = your sol'n

Answer 33

hm not quite

"four of the fourty gondolas"

so (4/40) * 360 degrees = ?

Answer 34

36

Answer 35

good so 36 = your sol'n

Answer 36

not quite

he ran 152 degrees so the fraction is (152/360)

multiply that fraction by the circumference 2pi*r

Answer 37

(152/360) * 2 * 3.14 * 1.2 = ?

Answer 38

still there? you just need to chuck (152/360) * 2 * 3.14 * 1.2 = ? into a calculator

Answer 39

sorry, had to do a bit of chores

Answer 40

3.18

Answer 41

@Mercury

Answer 42

good (rounds up to 3.2)

Answer 43

not quite

notice how SKF includes the 56 angle + half the circle

so 180 + 56

Answer 44

good

Answer 45

good

Answer 46

good

Answer 47

"five teams of four" so 20 students out of 24

(20/24) * 360 = ?

Answer 48

good

Answer 49

notice how RQS includes everything except the 30 degree angle

Answer 50

"everything except the 30 degree angle"

so take the whole circle 360 and subtract 30 degrees.

Answer 51

good

Answer 52

i'm gonna head off for the night, you will be here tomorrow, right?

Answer 53

I'm doing volunteer work all day but maybe in the evening

Answer 54

i might be able to do some more, if that's okay

Answer 55

@Mercury

Answer 56

sure

Answer 57

notice how angle ADC is the inscribed arc of <B so it's double <B

Answer 58

each side of the octagon is 45

the number of sides between TQV is 5

so 5 * 45

Answer 59

good

Answer 60

close but not quite, the angle is half the arc not double

Answer 61

60?

Answer 62

the angle is half the arc

the arc is 60

so the angle is 30

Answer 63

yikes

what's the question it's not showing up for me

Answer 64

good

Answer 65

if you notice <JHI includes everything except the arc JI

so it's 360 - 124

Answer 66

both angles Q and R intersect the same arc PS so 5x = 28.5 solve for x

Answer 67

2.3?

Answer 68

check your calculations again

if 5x = 28.5 simply divide both sides by 5 to get x

Answer 69

5.7

Answer 70

good so 5.7 = your sol'n

Answer 71

statement 1 is true (remember that an angle on the edge of a circle is 1/2 its arc)

Answer 72

try checking the other statements

Answer 73

C?

Answer 74

statement 3 is true for the same reason statement 1 is (angle on the edge of circle is 1/2 its arc)

notice how statement 4 is talking about arcs on opposite sides of the circle so the 1/2 rule does not apply making statement 4 the incorrect statement and thus the solution

Answer 75

good

Answer 76

good

Answer 77

hm. still working on it.

Answer 78

ok got it 140K is correct

Answer 79

good

Answer 80

concentric means they have to have the same center which is not the case in your problem

between "nonintersecting" and "tangent" which one do you think is the better descriptor? keep in mind the red dots where the circles touch

Answer 81

tangent

Answer 82

good so tangent = your sol'n

Answer 83

huh

generally the tangent does not include the radius except for the tangent point

so generally speaking i would say no

Answer 84

good

Answer 85

good

Answer 86

good

Answer 87

alright, i think it's time for both of us to sleep