MATHEMATICS
COLLEGE

Answer: Answer: xÂ˛+(â’xâ’z)Â˛+zÂ˛ = 1 â†’ 2xÂ˛+2zx+(2zÂ˛â’1) = 0 Solve as a quadratic : x = { â’2z Â± âš(4zÂ˛â’8(2zÂ˛â’1) } / 4 = { â’z Â± âš(2â’3zÂ˛) } / 2 A more manageable form can be derived by setting z = âš(2/3).sint to remove âš This gives x = â’âš(1/6).sint + âš(1/2).cost (can omit Â± sign since â’ is covered by Ď€â’t) Using x+y+z = 0 gives y = â’xâ’z = â’âš(1/6)sint â’ âš(1/2).cost So a parameterisation in terms of t â [0,2Ď€] is x = â’âš(1/6).sint + âš(1/2).cost, y = â’âš(1/6).sint â’ âš(1/2).cost, z = âš(2/3).sint (ds/dt)Â˛ = (â’âš(1/6).costâ’âš(1/2).sint)Â˛ + (â’âš(1/6).cost+âš(1/2).sint)Â˛ + (âš(2/3).cost)Â˛ = 1 â´ â« Ďds = â« ( â’âš(1/6).sint + âš(1/2).cost )Â˛dt, [t=0,2Ď€] = 2Ď€/3

HIGH SCHOOL

Robert climbed 775 steps in 12 1/2minutes. how many steps did he average per minute?

1162 is the awnser i believe

HIGH SCHOOL

Ali simplifies the expression 9y+y9y+y to 9y29y2. Use the drop-down menus to complete the statements below to explain why Ali's solution is correct or incorrect.

Answer with explanation:

The expression is: 9 y + y 9 y + y

Ali Simplifies it

→→Incorrect simplification done by Ali.

Solution of the expression:

→→Correct Simplification of the expression

I say she is incorrect because the equation 9y+y9y+y should equal 19y if I am correct. I am sorry if im not correct but i believe she is incorrect

MIDDLE SCHOOL

What is the greatest common factor of 15 and 64

15 = 3*5

64= 2*2*2*2*2*2

There are no common factors so the GCF is 1

64= 2*2*2*2*2*2

There are no common factors so the GCF is 1

HIGH SCHOOL

CHECK MY ANSWER PLEASE A central angle θ in a circle with a radius of 5.5 centimeters intercepts an arc with a length of 7.7 centimeters.

What is the radian measure of θ ?

Enter your answer, as a decimal, in the box

I used 80.2

First you need to find the Circumference

C = 2 pi r = 2 * 3.14 * 5.5 = 34.54

Arc measure / 360 = 7.7 / 34.54

Arc measure = 7.7 * 360 / 34.54

Arc measure = 80.25

Answer:

80.25 if you are using pi = 3.14

80.2 if you are using pi = 3.141592....

C = 2 pi r = 2 * 3.14 * 5.5 = 34.54

Arc measure / 360 = 7.7 / 34.54

Arc measure = 7.7 * 360 / 34.54

Arc measure = 80.25

Answer:

80.25 if you are using pi = 3.14

80.2 if you are using pi = 3.141592....