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scZoUnD [109]
3 years ago
10

URGENT HELP PLEASSEEEEEEEEEE!!!!!

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

5/16

Step-by-step explanation:

Each number can happen in exactly one way (one sets the digit of tens and the other of ones).

We know that the law of divisibility by 3 is "sum of digits has to be divisible by 3", so let's examine the numbers:

11

13

15 - Yes

17

31

33 - Yes

35

37

51 - Yes

53

55

57 - Yes

71

73

75 - Yes

77

So it's 5 out of 16 options.

We could do it by examining the relation and modulus shifts with each digit, but for 16 numbers it's seriously faster to just list them.

You might be interested in
Divide: 4/0 is it 0, undefined, 1, 4 or none of the above?
Gennadij [26K]

Answer: Undefined

Step-by-step explanation:

4/0 is undefined. This is because any number divided by zero is undifined.

7 0
3 years ago
Read 2 more answers
Se sabe q la suma de tres numeros es de 850. El primer es un tercio del segundo y el tercer número es el doble del segundo.¿Cual
murzikaleks [220]

Answer:

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

Step-by-step explanation:

Se sabe que la suma de tres números es 850. El primero es un tercio del segundo y el tercer número es el doble del segundo.

Representamos:

Primer número = x

Segundo número = y

Tercer número = z

Se sabe que la suma de tres números es 850.

x + y + z = 850 ...... Ecuación 1

El primero es un tercio del segundo

x = 1/3 años

El tercer número es el doble del segundo.

z = 2 años

Sustituimos 1 / 3y por x y 2y por z en la Ecuación 1

1 / 3y + y + 2y = 850

y / 3 + 3y = 850

Multiplica ambos lados por 3

y + 9y = 850 × 3

10 años = 2550

y = 2550/10

y = 255

Resolviendo para x

x = 1/3 años

x = 1/3 × 255

x = 85

z = 2 años

z = 2 × 255

z = 510

Por eso,

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

5 0
3 years ago
If you can buy 4⁄5 of a pound of ham for 3 dollars, how much can you purchase for 10 dollars? Write your answer as a fraction of
ryzh [129]
= [(4/5)/3] * 10 pounds
= (4 * 10)/15 pounds
= 40/15 pounds
= 8/3 pounds
= 2 2/3 pounds
Answer: 2 2/3 pounds
7 0
3 years ago
2. What is the domain of the function shown below?
suter [353]

Answer:

Option A is the correct answer

Step-by-step explanation:

- 1 \leqslant x \leqslant 6

4 0
3 years ago
A cricular arena is lit by 5 lights equally spaced around the perimeter of the arena. What is the measure of each angle formed b
Kitty [74]

Answer:

108°

Step-by-step explanation:

Suppose that circle with center A is a circular arena. Points B, C, D, E and F are 5 lights. These 5 points form regular pentagon (because these 5 lights are equally spaced around the perimeter of the arena).

The sum of all interior angles of pentagon can be calculated using following formula

(n-2)\cdot 180^{\circ},\\ \\(5-2)\cdot 180^{\circ}=3\cdot 180^{\circ}=540^{\circ}

All interior angles in regular pentagon are of equal measure, so

\dfrac{540^{\circ}}{5}=108^{\circ}

Thus, the measure of each angle formed by the lights on the perimeter is 108°.

7 0
4 years ago
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