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Romashka [77]
3 years ago
13

The formula for the circumference of a circle is C=2πr. What is the radius of a circle with a circumference of 22 cm?

Mathematics
1 answer:
Anna35 [415]3 years ago
7 0

Answer:

3.5cm

Step-by-step explanation:

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A=1/2 bh for b i need help
qwelly [4]
You said that                      <u>  A = 1/2 b h</u>

Multiply each side by 2 :    2A  =  b h

Divide each side by 'h' :    <em>2A/h  =  b</em>
5 0
3 years ago
manav drives from his home to the nearest metro station at an average speed of 40 kmph. from the station, he boards a train that
julia-pushkina [17]

Answer:

24 km

Step-by-step explanation:

4 0
1 year ago
A helicopter is hovering 110 feet in the air over a landing pad. If a man sees the helecopter at an angle of elevation of 29°, w
Pavel [41]
See the attached figure to better understand the problem

we know that

tan 29°=AC/CB--------> CB=AC/tan 29°
AC=110 ft 
CB--------> <span>how far the man is from the helicopter landing pad
</span>so
CB=AC/tan 29°----------> CB=110/ tan 29°----------> CB=198.45 ft

the answer is
the man is  198.45 ft  from the helicopter landing pad 

3 0
3 years ago
-18+-6 please help
Verdich [7]

Answer:

-24

Step-by-step explanation:

If you are struggling with this here's a tip!

-18+-6 is what you are trying to solve

The 6 is negative, so get rid of the plus sign -18-6

2 negative numbers are just added like positive numbers

So add 18 and 6, you should get 24

Don't forget about the negative!

-24

6 0
2 years ago
Evaluate 5x3 - 21 + 7 when x = -2.
Sliva [168]

Answer:

26

Step-by-step explanation:

5x³ - 21 + 7

x = 2

then:

5x³ - 14

5*2³ -14

5*8 - 14

40 - 14

26

8 0
3 years ago
Read 2 more answers
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