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3 years ago

Help me plzzzzzzzzzz im begging youuuuu

Mathematics

2 answers:

lesya [120]3 years ago

3 0

Answer:

If the poster is enlarged by the scale factor 5/2 then,

length=12×5/2=30ft

And,

breadth=3×5/2=7ft

>>>>correct ans is 7.5 by 30

erma4kov [3.2K]3 years ago

3 0

Answer:

7.5 feet by 30 feet

Step-by-step explanation:

i believe you would take 12 and divide it by 2 and then multiply it by 5=30. And then do the same for 3. 3 divided by 2 =1.5 and 1.5 multiplied by 5 =7.5

The answer would be 7.5 feet by 30 feet

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What the factor os 12

Mariana [72]

Answer:

Factors of 12 =1, 2, 3, 4, 6, 12

Step-by-step explanation:

7 0

3 years ago

An envelope contains three cards: a black card that is black on both sides, a white card that is white on both sides, and a mixe

Over [174]

Answer:

There is a 2/3 probability that the other side is also black.

Step-by-step explanation:

Here let B1: Event of picking a card that has a black side

B2: Event of picking a card that has BOTH black side.

Now, by the CONDITIONAL PROBABILITY:

$P(B_2/B_1 ) = \frac{P(B_1\cap B_2)}{P(B_1)}$

Now, as EXACTLY ONE CARD has both sides BLACK in three cards.

⇒ P (B1 ∩ B2) = 1 /3

Also, Out if total 6 sides of cards, 3 are BLACK from one side.

⇒ P (B1 ) = 3 /6 = 1/2

Putting these values in the formula, we get:

$P(B_2/B_1 ) = \frac{P(B_1\cap B_2)}{P(B_1)} = \frac{1}{3} \times\frac{2}{1} = \frac{2}{3}$

⇒ P (B2 / B1) = 2/3

Hence, there is a 2/3 probability that the other side is also black.

5 0

3 years ago

How can I divide decimals

shusha [124]

You can write the problem with a division box, move the divisor decimal point the amount of spaces that it would take to make the number whole. Move the decimal if the dividend the same amount of spaces as the divisor. Move the decimal point directly up above the division bar, divide, check your work

4 0

3 years ago

Read 2 more answers

If f(x)= x^2-2x+3, find the value of f (-2) and f(3)

AlexFokin [52]

Step-by-step explanation:

Given 

f(x) = x² - 2x + 3

Now

f(-2) = (-2)² - 2 * ( -2 ) + 3

 = 4 + 4 + 3

 = 11

f(3) = 3² - 2 * 3 + 3

 = 9 - 6 + 3

 = 12 - 6

 = 6

Hope it helps :)

4 0

3 years ago

(6x+40)º

Naddik [55]

Answer:

We know that angles B and D/A and C are congruent, this is because all opposite angles within a parallelogram are congruent.

(6x+40) + (x) = 180

7x + 40 = 180

7x = 140

x = 20

The Value of X is 20.

5 0

3 years ago