3 years ago

NEEED HELPPPPPPPPPPPPPP ASAP WILL GIVE BRAINLIST!!

Mathematics

2 answers:

madam [21]3 years ago

8 0

Blue point➡️ Lowell➡️ Lexington

dimulka [17.4K]3 years ago

3 0

Answer:

24.8 km

Step-by-step explanation:

Bluepoint to Lowell is 6

Lowell to Lexington is 18.8

add together

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HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

morpeh [17]

Answer:

n>25/3

Step-by-step explanation:

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2 years ago

help help help\help help help\help help help\help help help\help help help\help help help\help help help\

LenaWriter [7]

Answer:

Step-by-step explanation:

Subtract 60 from 80 to get 20, and divide 20 by 80 to get 1/4, which can be converted to 25%.

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2 years ago

Read 2 more answers

Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

${r}^{2} = {x}^{2} + {y}^{2}$

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

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3 years ago

The diameter of a sphere is 42 centimeters. find the surface area to the nearest tenth

Mademuasel [1]

A ~ 5541.77cm squared

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2 years ago

The width of a rectangle is 12 units. Can the perimeter x of the rectangle can be 60 units when its length y is 18 units? (1 poi

juin [17]

If the width is 12 and the length is 18, the perimeter of the rectangle is 12 + 12 + 18 + 18, or 60. So yes the perimeter can be 60.

8 0

2 years ago