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2 years ago

The circumference of a circle is 257 cm. What is the area, in square centimeters

Mathematics

2 answers:

nikdorinn [45]2 years ago

7 0

Answer:

$2\pi \times r = c$

$\pi \times {r}^{2} = a$

A=5257.76

Step-by-step explanation:

Or use a calculator online.

tankabanditka [31]2 years ago

6 0

5267.56 because I said so use a calculator lol

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Under a dilation, the point (3,5) is moved to (6,10) What is the scale factor of the dilation?

nlexa [21]

The scale factor of the dilation is 2.

Option D is correct.

Step-by-step explanation:

To find the scale factor of dilation, we find ratio of similar sides.

We are given the point (3,5) is moved to (6,10) under dilation.

Scale Factor = 6/3 = 2

Scale Factor = 10/5 = 2

The scale factor of the dilation is 2.

Option D is correct.

Keywords: scale factor of the dilation

Learn more about scale factor of the dilation at:

#learnwithBrainly

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3 years ago

Sonia earned $2,100 at her uncle's orchard. if she worked for 70 weeks and earned the same amount of money each week, how much d

Readme [11.4K]

Answer:

30 dollars a week

Step-by-step explanation:

2100/70 is 30

3 0

1 year ago

B - 1 > -17 what does b equal?

Nastasia [14]

Answer:

b > -16

Step-by-step explanation:

The inequality is given as:

b - 1 > -17

To solve this problem, add +1 to both sides of the expression:

b - 1 + 1 > -17 + 1

Now;

b > -16

So, all values for which b is more than -16 satisfy the solution for this problem.

6 0

2 years ago

A salad made such that the difference between twice the ounces of greens and the ounces of carrots is at least 3. Also, the sum

kap26 [50]

Answer:

3rd graph down

Step-by-step explanation:

greens are x and carrots are y in my equations

2x - y >= 3

x + 2y < 4

The first equation is solid and will highlight everything to the right of it because it is a >

the second is dashed and will highlight everything to the left of it because it is a <

the only 2 graphs that show this are 1 and 3

looking at the points you can see that the points for the solid line are both the same so ignore those and go to the dashed lined ones.

on the first graph the points are (0,4)

plugging those into our equation gives us 0 + 2*4 <4

or 8<4 which doesnt make sense making 3 the correct graph

(sorry my answer wasnt posting so i had to start over and make it less detailed, but comment if you need any explanation)

4 0

3 years ago

Read 2 more answers

Maria's height while jumping on a a trampoline can be modeled by the equation h=-16t^2+18t+5. Where t=time in seconds and h=heig

Vadim26 [7]

Answer:

10.06 ft

Step-by-step explanation:

Maria's maximum height will occur when her velocity reaches zero (0). This means that she has stopped ascending and is about to begin descent.

The equation for the height reached by Maria on the trampoline is given as:

$h=-16t^2+18t+5$

To find her maximum height, we first have to find the time it will take her to get to that height and corresponding velocity (zero).

Her velocity can be found by differentiating her height i.e. dh/dt:

$v = \frac{dh}{dt} = -32t + 18$

Therefore, when v = 0:

$0 = -32t+ 18\\\\=> 32t= 18\\\\t = 18 / 32 = 0.5625 secs$

It takes her 0.5625 seconds to get to her maximum height.

Therefore, her height at that time (0.5625 seconds) is:

$h=-16(0.5625)^2+18(0.5625)+5\\\\h = -16 * (0.3164) + 10.125+5\\\\h = -5.0624 + 15.125\\\\h = 10.06 ft$

Therefore, her maximum height is 10.06 ft.

3 0

2 years ago