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3 years ago

12

The ratio of green marbles to yellow marbles in Naafay's bag is equal to 2:3. What percent of the marbles in the bag are green m

arbles?

1 answer:

mina [271]3 years ago

7 0

It is 80% just writing random things so it can be 20 words

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Taj asked 27 classmates whether they know how to write calligraphy .

sukhopar [10]

Answer:

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Step-by-step explanation:

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3 years ago

Find volume of prism it’s on mathswatch I’m really stick someone helpppp

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I don’t that’s a question

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3 years ago

A rectangle has a length 6 more than it's width if the width is decreased by 2 and the length decreased by 4 the resulting has a

Rashid [163]

Answer:

Length of original rectangle: 11 units.

$\frac{\text{Area of original rectangle}}{\text{Area of new rectangle}}=\frac{55}{21}$

$\text{Perimeter of new rectangle}=20$

Step-by-step explanation:

Let x represent width of the original rectangle.

We have been given that a rectangle has a length 6 more than it's width. S the length of the original rectangle would be $x+6$ .

We have been given that when the width is decreased by 2 and the length decreased by 4 the resulting has an area of 21 square units.

The width of new rectangle would be $x-2$ .

The length of new rectangle would be $x+6-4=x+2$ .

The area of new rectangle would be $(x+2)(x-2)$ .

Now we will equate area of new rectangle with 21 and solve for x as:

$(x+2)(x-2)=21$

Applying difference of squares, we will get:

$x^2-2^2=21$

$x^2-4=21$

$x^2-4+4=21+4$

$x^2=25$

Since width cannot be negative, so we will take positive square root of both sides.

$\sqrt{x^2}=\sqrt{25}$

$x=5$

Therefore, the width of original rectangle is 5 units.

Length of the original rectangle would be $x+6\Rightarrow x+5=11$ .

Therefore, the length of original rectangle is 11 units.

$\text{Area of original rectangle}=5\times 11$

$\text{Area of original rectangle}=55$

Therefore, area of the original rectangle is 55 square units.

Now we will find ratio of the original rectangle area to the new rectangle area as:

$\frac{\text{Area of original rectangle}}{\text{Area of new rectangle}}=\frac{55}{21}$

We know that perimeter of rectangle is two times the sum of length and width.

$\text{Perimeter of new rectangle}=2((x+2)+(x-2))$

$\text{Perimeter of new rectangle}=2((5+2)+(5-2))$

$\text{Perimeter of new rectangle}=2(7+3)$

$\text{Perimeter of new rectangle}=2(10)$

$\text{Perimeter of new rectangle}=20$

Therefore, the perimeter of the new rectangle is 20 units.

7 0

3 years ago

List the key words in the equation twice the sum of a number and three is seven and than write the equation

egoroff_w [7]

Twice, sum. and is are the important words.

8 0

3 years ago

Read 2 more answers

Which number is equivalent to 0.33333..(going on forever)?

klemol [59]

Suppose x = 0.333...

Then 10x = 3.333...

So 10x - x = 3.333... - 0.333..., and the repeating decimal part gets eliminated so that 9x = 3.

Then x = 3/9 = 1/3.

7 0

3 years ago