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3 years ago

7

I also bought $7$ different postcards. How many ways can I send the postcards to my $3$ friends, so that each friend gets at lea

st one postcard?
How do i count the restriction that each friend must get at least 1 or more postcards and the postcards are distinguishable?

1 answer:

harina [27]3 years ago

5 0

Bruh how’s it gonna tell me incorrect answer when it was right

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Barry is building a fence around rround his bacyard. The backyard is in the shape of a rectangle and the longest side of the yar

STatiana [176]

Answer:

10m

Step-by-step explanation:

Recall that the perimeter of a rectangle

= (2 x Long Side) + (2 x Short Side)

we are given that each of the long side = 20m and the perimeter is 60m

substituting these into the equation,

60 = (2 x 20) + (2 x Short Side)

60 = 40 + (2 x Short Side) (subtract 40 from both sides)

60-40 = (2 x Short Side)

(2 x Short Side) = 20 (divide both sides by 2)

Short Side = 20 / 2 = 10m

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3 years ago

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Algebra Please Help!!

allochka39001 [22]

Answer:

c = 5/9 (F-32)

F-32 = c ÷ (5/9)

F-32 = c × (9/5)

F-32= 9c/ 5

F= (9c/5) + 32

I hope I helped you^_^

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3 years ago

Distribute and evaluating <br> (X + 6) (x - 3)

sesenic [268]

Answer:

x^2+3x-18

Step-by-step explanation: hoped I helped

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3 years ago

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someone solve this question for me with detailed explanation and step by step so i can grasp the concept

natta225 [31]

Answer:

3rd grade

Step-by-step explanation:

Given that the values are different types (fractions, decimals, and percentages), it would be helpful to convert them to the same type of value.

Converting everything to percentages seems more convenient.

Since 61.24% is already a percentage, we simply have to convert 0.52, 25/36, and 0.5274444 (I wrote 0.5274 like this since the 4 is a repeating value).

To convert 0.52, we simply multiply by 100:

0.52 * 100 = 52%

For 25/36, we need to know its decimal form and multiply by 100 to find the percentage:

25 / 36 = 0.6944 * 100 = 69.44%

For 0.5274444, we also multiply by 100:

0.5274444 * 100 = 52.74444

Thus, we have 52% (2nd grade), 69.44% (3rd grade), 61.24% (4th grade), and 52.74444% (5th grade).

3rd grade has the highest portion of students

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2 years ago

What is the equation in standard form of a parabola that models the values in the table

shusha [124]

Answer:

Y=4x^2-3x+5

Step-by-step explanation:

For the standard form equation to model the values in the table, each value of x in the table should give the matching the y value when substituted into the equation. We will test each equation:

<u> $Y=-4x^2+3x+5$ for (-1,12)</u>

$Y=-4(-1)^2+3(-1)+5=-4(1)+-3+5=-4+-3+5=-2\\$

This does not give 12 as the answer and is not a solution.

<u> $Y=-4x^2-3x+5$ for (-1,12)</u>

$Y=-4(-1)^2-3(-1)+5=-4(1)+3+5=-4+3+5=4\\$

This does not give 12 as the answer and is not a solution.

<u> $Y=3x^2-4x+5$ for (-1,12)</u>

$Y=3(-1)^2-4(-1)+5=3(1)+4+5=3+4+5=12\\$

This does give 12 as the answer and is a possible solution.

We now try (2,15).

$Y=3(2)^2-4(2)+5=3(4)-8+5=12-8+5=9\\$

This does not give 15 as the answer and is not a possible solution.

<u> $Y=4x^2-3x+5$ for (-1,12)</u>

$Y=4(-1)^2-3(-1)+5=4(1)+3+5=4+3+5=12\\$

This does not give 12 as the answer and is not a solution.

We now try (2,15).

$Y=4(2)^2-3(2)+5=4(4)-6+5=16-6+5=15\\$

This does give 15 as the answer and is a solution.

This is the standard form of the equation.

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3 years ago