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3 years ago

The circumference of a circle that has a radius of 7cm. use 3.14. for pie

1 answer:

7 0

https://www.google.com/imgres?imgurl=http://pad2.whstatic.com/images/thumb/0/0b/Calculate-the-Circum...
this link will give u an example how to find it with the formula

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Giving brainliest to whoever can solve correctly

Furkat [3]

Answer:

The answer is 9

Step-by-step explanation:

4/9 = 9/4

8 0

3 years ago

You are 10 years old and have $500 to put in the bank to save for college. You will earn 5% simple interest rate. If you leave i

pashok25 [27]

Answer:

$814.48

Step-by-step explanation:

Use the formula for simple interest: B=P(1+r)^t

Plug in values: B=500(1+.05)^10

Evaluate: B=814.48

So the balance after 10 years will be around $814.48

5 0

3 years ago

PLEASE HELP! ITS A DECENTLY EASY QUESTION BUT I CANT FIGURE IT OUT!

Tema [17]

Answer:

3,4 and 5 are correct........☺

8 0

3 years ago

Read 2 more answers

Given the points (2,k) (2,k) and (0,−6) (0,−6) , for which values of k would the distance between the points be 5 – √ 5

11Alexandr11 [23.1K]

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have:

$(2,\ k)\to x_1=2,\ y_1=k\\(0,\ -6)\to x_2=0,\ y_2=-6\\d=5-\sqrt5$

Substitute:

$\sqrt{(0-2)^2+(-6-k)^2}=5-\sqrt5\\\\\sqrt{(-2)^2+[-(6+k)]^2}=5-\sqrt5\\\\\sqrt{4+(6+k)^2}=5-\sqrt5\ \ \ \ \ |^2\\\\4+(6+k)^2=(5-\sqrt5)^2\ \ \ \ |use\ (a-b)^2=a^2-2ab+b^2$

$4+(6+k)^2=5^2-2\cdot5\cdot\sqrt5+(\sqrt5)^2\\\\4+(6+k)^2=25-10\sqrt5+5\ \ \ \ |-4\\\\(6+k)^2=26-10\sqrt5\to6+k=\pm\sqrt{26-10\sqrt5}\ \ \ \ |-6\\\\\boxed{k=-6-\sqrt{26-10\sqrt5}\ \vee\ k=-6+\sqrt{26-10\sqrt5}}$

If $d=\sqrt5$ , then:

$\sqrt{4+(6+k)^2}=\sqrt5\ \ \ \ |^2\\\\(\sqrt{4+(6+k)^2})^2=(\sqrt5)^2\\\\4+(6+k)^2=5\ \ \ \ |-4\\\\(6+k)^2=1\to 6+k=\pm\sqrt1\\\\6+k=\pm1\ \ \ \ |-6\\\\\boxed{k=-7\ \vee\ k=-5}$

3 0

3 years ago

SOMEONE HELP ME PLS I DONT UNDERSTAND AND GIVE ONE OF THE SELECTED OPTIONS PLS :)

VLD [36.1K]

X = 130°

they are alternate exterior angles. the one you have highlighted is correct.

4 0

3 years ago