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3 years ago

Choose the correct proportions.

Mathematics

1 answer:

Art [367]3 years ago

6 0

Answer:

Answer is option b) 3:4 = 9:12

Step-by-step explanation:

On dividing the numbers 9 and 12 by 3 table we get the ratio 3:4

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Melanie buys a carrying case for her new laptop, which costs 125% as much as her old laptop case. The price of her new laptop ca

lukranit [14]

$125 \%of \: 65.00$

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3 years ago

D) 12x^3 - 4x^2 Factorise fully

Vinvika [58]

Answer:

The answer for the equation is $4x^2 (3x - 1)$ .

Step-by-step explanation:

Solve:

$12^3 - 4x^2$

-Factor out the $4$ :

$12^3 - 4x^2$

$4(3x^3 - x^2)$

-Factor out the $x^2$ :

$4(3x^3 - x^2)$

$x^2 (3x - 1)$

-Then, you rewrite the complete factored expression:

$x^2 (3x - 1)$

$4x^2 (3x - 1)$

So, the answer is $4x^2(3x - 1)$ .

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3 years ago

Dan is thinking of a number. The quotient of thisnumber and 1.8 is31.5. Find Dan's number.

forsale [732]

56.7

31.5 x 1.8 = 56.7, and 56.7 / 1.8 = 31.5

6 0

3 years ago

Sali throws an ordinary fair 6-sided dice once.

UNO [17]

Answer:

$a=p=\frac{1}{6}\\\\b. \ p=\frac{1}{12}\\\\c.\ 1H,1T,2H,2T,3H,3T,4H,4T,5H,5T,6H,6T$

Step-by-step explanation:

a. A fair dice has 6 sides with unique identities.

-The sample space of one throw is 6 and each face has an equal chance of showing up.

-The probability of a 6 is calculated as:

$p(six)=\frac{1}{6}\\\\or \ =0.1667$

Hence, the probability of a 6 is $\frac{1}{6}$

b.A fair die has 6 unique faces.

-Two throws will have a sample space of 12.

-Each face has an equal probability of appearing twice.

-The probability of a 6 on both throws is:

$P(six)=2\times \frac{1}{6}\\\\=\frac{1}{12}$

c. A coin has 2 sides(head, tail) and a die has 6 sides.

-The total sample space for the simultaneous throw of a coin and die is 12.

-The resultant sample space is :

$1H,1T,2H,2T,3H,3T,4H,4T,5H,5T,6H,6T$

4 0

3 years ago

12480 es divisible de 6 Doy 50

kupik [55]

12,480 es par y la suma de sus digitos da un multiplo de 3, por ello concluimos que es divisible por 6.

<h3></h3><h3>¿Como saber si un número es divisible por 6?</h3>

Para que un número sea divisible por 6 debe cumplir dos condiciones.

Ser par.
La suma de sus digitos debe ser multiplo de 3.

En este caso tenemos 12,480, que sabemos que es par.

La suma de sus digitos da:

1 + 2 + 4 + 8 + 0 = 15

15 es multiplo de 3.

Entonces este número cumple ambas condiciones, por lo que concluimos que 12,480 es divisible por 6.

Sí quieres aprender más sobre divisiones.

brainly.com/question/9462805

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7 0

2 years ago