Ask question

Ask question

All categories

WINSTONCH [101]

1 year ago

11

The diameter (d) of a circle with a circumference of 440 cm is: Use Π = 22/7

2 answers:

In-s [12.5K]1 year ago

8 0

Answer:

C

Step-by-step explanation:

Circumference Formula :

<u><em>Circumference = 2πr = πd</em></u>

<u><em /></u>

Solving :

⇒ 440 = 22/7 × d

⇒ d = 440/22 × 7

⇒ d = 20 × 7

⇒ d = 140 cm

elena-s [515]1 year ago

5 0

Answer:

c

Step-by-step explanation:

c=2*22/7r

440=44/7r

440*7/44=r

70=r

d=2r

d=2*70

d=140 cm

You might be interested in

Y=-|x-5|<br> What is the axis of symmetry?

egoroff_w [7]

Answer:

The equation given to us is in the Standard form

y

=

a

x

2

+

b

x

+

c

where

a

=

1

,

b

=

0

and

c

=

−

1

The Axis of Symmetry is given by the formula

x

=

−

b

2

a

x

=

−

0

2

⋅

1

x

=

0

is the Axis of Symmetry of the Parabola with the equation

y

=

x

2

−

1

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Need to choose answers

trapecia [35]

Answer:

Box Number 3.

Step-by-step explanation:

4 is a coefficient in 4x because 4x is really 4*x which has 4 multiplying x. This is the same as 4 working with x. Also none of the other answers are true.

3 0

3 years ago

Dave throws sweets upwards at a speed of 8ms^-1 from a first floor window to his sister Carol who is standing at a second floor

olga55 [171]

It would take $1 second$ for Carol to catch the sweet after Dave threw it.

Let

$h=\text{maximum height}\\y=\text{distance from maximum height to Carol}\\t_h=\text{time taken to reach maximum height}\\t_y=\text{time taken to fall from maximum height to Carol}$

we want to calculate the value $t_h+t_y$

First, we have to calculate $t_h$ using the formula

$v=u+at$

using $v=0$ , $u=8$ , $a=-10$ (the sweets are decelerating due to gravity!)

$0=8-(10)t_h\\10t_h=8\\t_h=\frac{8}{10}=0.8seconds$

To calculate $t_y$ , first calculate $h$ , then $y$ . Using the formula

$h=ut+\frac{1}{2}at^2$

and the values $u=8$ , $t=t_h=0.8$ , $a=-10$ (again, the sweets are decelerating to get to maximum height)

$h=(8)(0.8)+\frac{1}{2}(-10)(0.8)^2\\\\=6.4-3.2\\=3.2m$

since, Carol is standing $3m$ above Dave, we have the relationship

$h=y+3$

so that

$y=h-3\\=3.2-3\\=0.2m$

we can now calculate $t_y$ ;

$y=ut_y+\frac{1}{2}gt_y^2$

taking $y=0.2$ , $u=0$ , $g=10$ (the sweets are falling, so they are now accelerating)

$0.2=(0)t_y+\frac{1}{2}(10)t_y^2\\\\0.2=5t_y^2\\t_y^2=0.04\\\implies t_y=0.2seconds$

So it would take

$t_h+t_y=0.8+0.2=1.0seconds$

for Carol to catch the sweet after Dave threw it from the first floor.

Learn more here: brainly.com/question/84352

7 0

2 years ago

Disney held a breakfast for parents and their children to eat with Mickey mouse. adult tickets cost $17.95 and children's ticket

RUDIKE [14]

Answer:

The number of children attending = 324

The number of adults attending = 176.

Step-by-step explanation:

Here, the total number of people attending = 500

Let us assume the umber of children attending the breakfast = m

So, the number of adults attending the breakfast = 500 - m

Cost of ticket for each children = $12.95

So, the cost of m children's tickets = m x ( Cost of 1 children ticket)

= m x ( $12.95) = 12.95 m .... (1)

Cost of ticket for each adult = $17.95

So, the cost of (500 -m) adults's tickets

= (500 - m) x ( Cost of 1 adult ticket) = (500 -m) x ( $17.95)

= 8,975 - 17.95 m .... (2)

Now, the total earnings from the total ticket sold = $7355

So, The earning from ( Adult's + children's tickets) = $7355

⇒ 12.95 m + 8,975 - 17.95 m = $7355

or, - 5 m = 7355 - 8975 = -1620

or, m = 1620/5 = 324

⇒ m =324

Hence the number of children attending = m = 324

The number of adults attending = 500 - m = 500 - 324 = 176.

7 0

3 years ago

When Demetrius looked out at the school parking lot, he noticed that for every 5 SUVs, there were 4 sedans. If there are 36 vehi

d1i1m1o1n [39]

24 of the cars are SUV's.

6 0

3 years ago