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zloy xaker [14]

3 years ago

5

In a group of 20 students, 50% have blue eyes and 40% have brown eyes. How many students have brown eyes? *

2 answers:

marusya05 [52]3 years ago

6 0

Answer: 8 students have brown eyes

Step-by-step explanation:

Unit rate: 5 % = 1 student.

5 x 10 = 50%. 10 students have blue eyes.

5 x 8 = 40%. 8 students have brown eyes.

In conclusion, 8 students have brown eyes.

Hope this helps!

devlian [24]3 years ago

3 0

Answer:

8

Step-by-step explanation:

50% of students have blue eyes, so that is 10

40% of students have brown eyes, so that is 8

the rest 10% is another color, which is 2

10+8+2=20

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Which is greater 3yd or 30ft

Volgvan

Answer: 30 feet is greater

Step-by-step explanation:

3 yards is 9 feet (1 yard is 3 feet). 9 < 30. 30 feet is more than 9 feet, and 9 feet is equal to 3 yards so 30 feet is greater than 3 yards

8 0

3 years ago

Y varies directly with x and y = 12 when x =5 what is the value of y when x = 8

torisob [31]

Y and x are directly proportional, as stated by hypothesis. Let's use the rule of three to find y when x = 8.

x=5 --> y=12
x=8 --> y=?

? = (8*12)/5 = 96/5 = 19.2

So y directly varies with x, and y=12 when x = 5, then y=19.2 when x=8.

Hope this Helps! :D

3 0

4 years ago

What is bigger 3.14 or 3.1 repeating

sleet_krkn [62]

Answer:

3.14

Step-by-step explanation:

compare 3.4 to 3.111111111111111111...

4 is bigger than 1

4 0

4 years ago

Read 2 more answers

The volume of the figure is 9ft 15ft 15ft 15ft please help fast PLEASE!

Whitepunk [10]

Step-by-step explanation:

<u>Formulas.</u>

Square: $V = L \times W \times H$

Square Pyramid: $V = \frac13b^2h$

b = base.

Let's work on the square first.

<u>Substitute the Length, Width, and Height of the square into the formula:</u>

<u /> $V=15 \times15\times15$

<u>Solve:</u>

<u /> $V=15^{3} =3,375$

Let's work on the square pyramid.

<u>Substitute 225 into the formula, and 9 (height):</u>

<u /> $V=\frac{1}{3}(15)^2(9)$

<u>Solve:</u>

<u /> $V=\frac{1}{3}225(9)$

$V=\frac{1}{3}(2025)$

$V=675$

<u />

<u>Add each volume:</u>

$3,375+675=4,050 ft^{3}$

The total volume of the figure is $4,050 ft^{3}$ .

3 0

3 years ago

A rectangle or exercise mat has a perimeter of 48 feet the length of the mat Is twice The lift right and solve any questions to

Misha Larkins [42]

Answer:

The equation to determine the length is $4w+2w=48$ .

The Length of the exercise mat is 16 feet.

Step-by-step explanation:

Given:

Perimeter of Rectangular mat = $48\ ft$

Let the length of the mat be denoted by 'l'

And width be denoted by 'w'.

Also Given:

The length of the mat is twice the width of the mat.

So we can say that;

$l=2w$ ⇒ equation 1

Now we know that;

Perimeter of Rectangle is equal to twice the sum of length and width.

framing in equation form we get;

$2(l+w)=48$ ⇒ equation 2

Now Substituting equation 1 in equation 2 we get;

$2(2w+w)=48$

Applying Distributive property we get;

$2\times2w+2\times w=48\\\\4w+2w=48$

Hence, The equation to determine the length is $4w+2w=48$ .

On Solving the above equation we get;

$4w+2w=48\\\\6w=48$

Dividing both side by 6 we get;

$\frac{6w}{6}=\frac{48}{6}\\\\w=8\ ft$

Now Substituting the value of 'w' in equation 1 we get;

$l=2w=2\times8=16\ ft$

Hence The Length of the exercise mat is 16 feet.

3 0

3 years ago