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3 years ago

6

Numbers that are palindromes read the same forward and backward. For example, 30203 is a five-digit palindrome. Of a single nu

mber is chosen randomly from the set of all two-digit numbers, find the probability that it will be palindromic.

1 answer:

Luda [366]3 years ago

6 0

Answer:

$\frac{1}{10}$

Step-by-step explanation:

Total number of two digit numbers are= 90

Palindrome numbers in two digit number= 11, 22,33,44,55,66,77,88,99.

Total Number of palindromic Numbers= 9

Probability of palindromic number= $\frac{Number of palindrome numbers}{Total Number of outcomes}$

Probability of palindromic number= $\frac{9}{90}$

Probability of palindromic number= $\frac{1}{10}$

Hence, the correct answer is $\frac{1}{10}$

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Habiendose organizado un bingo se ha recaudado $1900. Por la entrada de hombres $15 y mujeres $10 y se ha reportado una asistenc

aev [14]

Answer:

The number of men was $80$

The number of women was $70$

Step-by-step explanation:

The question in English is

Having organized a bingo has raised $1900. For the entrance of men $15 and women $10 and an attendance of 150 people has been reported. Determine the number of men and the number of women who participated in the bingo.

Let

x----> the number of men

y----> the number of women

we know that

$x+y=150$

$x=150-y$ -----> equation A

$15x+10y=1,900$ -----> equation B

substitute equation A in equation B and solve for y

$15(150-y)+10y=1,900$

$2,250-15y+10y=1,900$

$15y-10y=2,250-1,900$

$5y=350$

$y=70$

Find the value of x

$x=150-70=80$

therefore

The number of men was $80$

The number of women was $70$

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3 years ago

How to find the missing angle of a parallelogram only knowing 1 number?

lesantik [10]

Answer:
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3 years ago

Explain how you can write equivalent ratios.

Brut [27]

Answer:

Step-by-step explanation:

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4 0

3 years ago

Read 2 more answers

In triangle ABC, cos A =

nikitadnepr [17]

The other expression that has a value of $\frac{7}{25}$ is A) sin B.

Step-by-step explanation:

Step 1:

$sin\theta = \frac{oppositeside}{hypotenuse} ,$ $cos\theta = \frac{adjacentside}{hypotenuse} ,$ $tan \theta = \frac{opposite side}{adjacent side} .$

For angle B, the opposite side measures 7 units, the adjacent side measures 24 units and the hypotenuse measures 25 units.

$sinB= \frac{oppositeside}{hypotenuse} = \frac{7}{25} ,$ $tan B = \frac{opposite side}{adjacent side} = \frac{7}{24} ,$ $cosB = \frac{adjacentside}{hypotenuse} = \frac{24}{25}.$

Step 2:

For angle A, the opposite side measures 24 units, the adjacent side measures 7 units and the hypotenuse measures 25 units.

$tan A = \frac{opposite side}{adjacent side} = \frac{24}{25} .$

Step 3:

tan C cannot be determined as C is the right angle. The opposite side and hypotenuse of the triangle would be the same.

So sin B also has a value of $\frac{7}{25}.$ This is option A.

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3 years ago

94 POINTS AND BRAINLIEST TO BEST ANSWER!!!

Schach [20]

Answer:

54

Step-by-step explanation:

Diagonals are perpendicular so

2x+ 90 + 3x = 180 since this forms a triangle

Combine like terms

5x+ 90 = 180

Subtract 90 from each side

5x +90-90 =180-90

5x = 90

Divide each side by 5

5x/5 = 90/5

x =18

We want to find Angle ABD

ABD = 3x = 3*18 = 54

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2 years ago

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