Ask question

Ask question

All categories

Svetllana [295]

3 years ago

15

Two coins have a radii of 3 cm and 1 cm the smaller coin rolls along the circumference of the fixed larger coin until the smalle

r coin returns to its original position. How many revolutions has the small coin made?

1 answer:

dezoksy [38]3 years ago

6 0

I think you have to do 3cm/1cm

I think the small coin makes 3 revolution

You might be interested in

Plz help! I will make you the brainliest! Thanks!

Andrews [41]

So to start you will need to divide by -5 then -5 divided by -5 cancelle

4 0

3 years ago

Read 2 more answers

Is ab perpendicular to cd ? Explain.

Afina-wow [57]

We know that
if two lines are perpendicular
then
the slopes
m1*m2=-1

step 1
find the slope AB
A (0,2)
B (-3,-3)
m=(y2-y1)/(x2-x1)-----> m=(-3-2)/(-3-0)-----> m=-5/-3----> m1=5/3

step 2
find the slope CD
C (-4,1)
D (0,-2)
m=(y2-y1)/(x2-x1)-----> m=(-2-1)/(0+4)-----> m=--3/4----> m2=-3/4

step 3
multiply mi*m2
(5/3)*(-3/4)-----> -15/12
so
15/12 is not -1
therefore
AB is not perpendicular to CD

4 0

3 years ago

Give two ways to write the algebraic expression p + 26 in words the product

Margarita [4]

Answer:

para lara

Step-by-step explanation:

pere culu ana lletere

6 0

2 years ago

Solve the quadratic equation by completing the square x^2+5x-3=0

PIT_PIT [208]

${\tt{x = \frac{ -b± \sqrt{ {b}^{2} - 4ac } }{2a} }}$

${\tt{ x = \frac{ - 5±\sqrt{{5}^{2} - 4 \times 1 \times ( - 3)} }{2 \times 1} }}$

${\tt{x = \frac{ - 5±\sqrt{25 + 12} }{2} }}$

${\tt{x = \frac{ - 5 ±\sqrt{37} }{2} }}$

$\: \:$

${\tt{x = \frac{ - 5 + \sqrt{37} }{2} }}$

${\tt{x = \frac{ - 5 - \sqrt{37} }{2} }}$

8 0

2 years ago

Write 605.8 correct to the nearest 10

kvv77 [185]

Rounding to the nearest 10 means if the digit to the right of the 10s collum is 5 or more round up. if less than 5 round down.
605.8
610 is the answer as 5 is rounded up

6 0

3 years ago