If you want to create a cone or cylinder by spinning a 2-dimensional shape about an axis symmetry, what shapes would you need to use?

Answers

Answer 1

Answer: isosceles triangle and rectangle

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Please help me, I got the answer wrong and I don't what to do

Answers

Answer:

x = 124

Step-by-step explanation:

Firstly yu can move the 6 to the other side...where the equation would be in this form

; fifth root of ( 249 - 2x) = 7 - 6

; fifth root of ( 249 - 2x) = 1

; 249 - 2x = 1^5

; 2x = 248...,then divide both sides by 2

; Hence..., x = 248/2

Lindsay paid $4.40 for 1 gallon of ice cream. At this rate, what 1 quart cost? What would 1 pint cost? Please explain.

Answers

each pint would cost 55 cents if u divide 1.10 by two because I think that there are two pints in one quart.

Find the perimeter of an isosceles trianglewhose base is 40 cm and whose base angle is 70".

Answers

$cos70^o=(20)/(x)\n\ncos70^o\approx0.342\n\n(20)/(x)=0.342\n\n0.342x=20\ \ \ \ /:0.342\n\nx\approx58.5\ (cm)\n\nPerimeter:40cm+2\cdot58.5cm=157cm$

$cos70^0= (20)/(x)\n\nx= (20)/(cos70^0) \n\nthe\ perimeter\ is:\n\n P=2x+40=(40)/(cos70^0)+40 \ \ \ and\ \ \ cos70^0\approx0.3420\n\nP\approx(40)/(0.342)+40\approx156.96\ [cm]$

??What's the balance ??

Answers

I think the answer is A because the balance after 4 years is not on their and so we are trying to find the balance after three years. And after 3 years the balance is 805

I believe it's A.
Hope this helps.

If an object is dropped from a height of 144 feet, the function h(t) = -16t2 + 144 gives the height of the object after t seconds. When will the object hit the ground? A) 9 seconds

B) 6 seconds

C) 1.5 seconds

D) 3 seconds

Answers

So this question is asking for the zeros, or the x-intercepts, of this equation. For this, we have to set h(t) to zero to solve for it.

For this, we will be using the quadratic formula, which is $x=(-b+√(b^2-4ac))/(2a),(-b-√(b^2-4ac))/(2a)$ (a = t^2 coefficient, b = t coefficient, and c = constant). In this case, our equation is $t=(-0+√(0^2-4*(-16)*144))/(2*(-16)),(-0-√(0^2-4*(-16)*144))/(2*(-16))$ . From here we can solve for t.

Firstly, solve the exponents and multiplications: $t=(-0+√(0+9216))/(-32),(-0-√(0+9216))/(-32)$
Next, solve the additions and subtractions: $t=(√(9216))/(-32),(-√(9216))/(-32)$
Next, square root 9216: $t=(96)/(-32),(-96)/(-32)$
Lastly, divide and your answers are going to be $t=-3,3$