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slava [35]
3 years ago
11

A number is chosen at random from the first 100 positive integers. Find the probability that the number is either even or a perf

ect square.
3/5

11/20

1/20
Mathematics
2 answers:
Nostrana [21]3 years ago
4 0

Answer:

Option A is correct.

Step-by-step explanation:

Total Number of Outcome = 100

Number of even numbers = 50

Number of perfect square = 10

Probability=\frac{Number\:of\:favorable\:outcome}{Number\:of\:total\:outcome}

Probability=\frac{50}{100}+\frac{10}{100}=\frac{60}{100}=\frac{3}{5}

Therefore, Option A is correct.

Ber [7]3 years ago
3 0
The answer is B. 11/20
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Artaud noticed that if he takes the opposite of his age and adds 45 he gets the number 32. How old is Artaud?
elena-14-01-66 [18.8K]

Answer:

He is 13 years old

Step-by-step explanation:

32-45=-13

the opposite of -13 is positive 13

3 0
3 years ago
Convert 2.5 kg into gram​
finlep [7]

Answer:

2500 grams

Step-by-step explanation:

1kg=1000g

2.5kg=1000×2.5

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5 0
3 years ago
Read 2 more answers
The perimeter of the semicircle is 25.71 cm. Calculate the value of radius x. Take pi to be 3.142
yan [13]

Answer:

5 cm

Step-by-step explanation:

Perimeter of semicircle =  \frac{1}{2}  \times 2\pi \: x +2x\\ 25.71 = 3.14 2\times x+ 2x\\ 25.71 = 5.14 2 x\\ x =  \frac{25.71}{5.142}  \\ x = 5  \: cm

5 0
3 years ago
I need the answer quick!! i also will try to mark brainiest
mariarad [96]

Answer:

\sqrt{29}

Step-by-step explanation:

using the distance formula

d = √(x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 2, - 3) and (x₂, y₂ ) = (- 4, 2)

d = \sqrt{(-4+2)^2+(2+3)^2} = \sqrt{4+25} = \sqrt{29} ← in exact form


5 0
3 years ago
2 3/4+3 5/8 simplified
otez555 [7]

2\frac{3}{4}+3 \frac{5}{8}=6\frac{3}{8}

Solution:

Given expression is 2\frac{3}{4}+3 \frac{5}{8}.

To simplify the expression 2\frac{3}{4}+3 \frac{5}{8}.

Let us first convert the mixed fraction into improper fraction.

2\frac{3}{4}+3 \frac{5}{8}=\frac{(2\times 4) + 3}{4}+ \frac{(3 \times 8)+5}{8}

            =\frac{8+ 3}{4}+ \frac{24+5}{8}

            =\frac{11}{4}+ \frac{29}{8}

Take LCM for the denominators (LCM of 4, 8 = 8) and make the same.

            =\frac{11\times2}{4\times 2}+ \frac{29\times1}{8\times1}

            =\frac{22}{8}+ \frac{29}{8}

            =\frac{51}{8}

Now, divide 51 by 8 and again write it in the mixed fraction.

             =6\frac{3}{8}

2\frac{3}{4}+3 \frac{5}{8}=6\frac{3}{8}

Hence, the simplified answer is 6\frac{3}{8}.

7 0
3 years ago
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