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mash [69]
3 years ago
6

Calculate the radius22cm​

Mathematics
2 answers:
sweet [91]3 years ago
6 0

Answer:

11

Step-by-step explanation:

statuscvo [17]3 years ago
6 0

Answer:

Step-by-step explanation:

r=22/2=11

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The answer is B
6 units
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6 8<br> What is the determinant of K=<br> O -18<br> -8<br> O 10<br> O 18<br> ?
erik [133]

Answer:

A:-18

Step-by-step explanation:

Hopefully this helps!

3 0
2 years ago
Twenty percent of what number is 5?
Semenov [28]

Answer:

A. 25

Step-by-step explanation:

25 split into 5 groups, 5 in each of them.

There are 5 20's in 100 (the total)

25 = 5 + 5 + 5 + 5 + 5

I hope the explanation makes sense!

7 0
2 years ago
George walks 1 mile to school. He leaves home at the same time each day, walks at a steady speed of 3 miles per hour, and arrive
mario62 [17]
Note that on a normal day, it takes him <span>1/3</span> hour to get to school. However, today it took <span><span><span>1/2 mile </span><span>2 mph</span></span>=1/4</span> hour to walk the first <span>1/2</span> mile. That means that he has <span>1/3−1/4=1/12</span> hours left to get to school, and <span>1/2</span> mile left to go. Therefore, his speed must be <span><span><span>1/2 mile</span><span>1/12 hour</span></span>=<span>6 mph</span></span>, so 6 is the answer.
5 0
3 years ago
Which expressions below equal a rational number? Choose all that apply. 4/5 + 3/8; sqrt(100) + sqrt(5); 7sqrt(5) - sqrt(245); (4
masha68 [24]

Answer:

Step-by-step explanation:

<h3>Rational number</h3>

1)  \dfrac{4}{5}+\dfrac{3}{8}\\\\\dfrac{4}{5} \ \text{is a rational number} \ and \ \dfrac{3}{8} \ \text{is a rational number}\\\\\dfrac{4}{5}+\dfrac{3}{8} \ \text{is also a rational number}

b) \sqrt{100}+\sqrt{5} = 10+\sqrt{5}\\\\\sqrt{5} \ \text{is a irrational number}. \\\\ \text{Rational number added to irrational number will result in an irrational number}\\\\10 + \sqrt{5} \ is \ not \ a \ rational \ number.

c)

7\sqrt{5}-\sqrt{245}=7\sqrt{5}-\sqrt{7*7*5}

                   = 7\sqrt{5}-7\sqrt{5}\\\\=0\\\\\text{\bf $ 7\sqrt{5}-\sqrt{245}$ ia a rational number}

d)

(4\sqrt{7})*(2\sqrt{7})=4*2*\sqrt{7*7}\\

                       = 4*2*7

                       = 56

4\sqrt{7}*2\sqrt{7} \ \text{\bf is a rational number}

8 0
2 years ago
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