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2 years ago

15 of the 25 students Brought their own lunch. What percent of the students brought their own lunch?

Mathematics

1 answer:

bagirrra123 [75]2 years ago

5 0

Answer:

60%

Step-by-step explanation:

1: 15 divided by 25 to get 0.6

2: multiple 0.6 by 100 to get 60%

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The ratio of green beads to yellow beads in a bracelet is three to four. The total number of beads is 14. How many green beads a

Alja [10]

Answer:

There are 6 green beads there.

Step-by-step explanation:

This question can be solved by a system of equations.

I am going to say that:

x is the number of green beads

y is the number of yellow beads

The ratio of green beads to yellow beads in a bracelet is three to four.

This means that

$\frac{x}{y} = \frac{3}{4}$

$3y = 4x$

$y = \frac{4x}{3}$

The total number of beads is 14.

This means that $x + y = 14$

How many green beads are there ?

This is x.

$x + y = 14$

However

$y = \frac{4x}{3}$

$x + \frac{4x}{3} = 14$

Using multiplying by the gcm(3)

$3x + 4x = 42$

$7x = 42$

$x = 6$

There are 6 green beads there.

4 0

2 years ago

...................................................................

Genrish500 [490]

Answer:

12 cm

Step-by-step explanation:

The Pythagorean Theorem is as follows:

$a^{2} +b^{2} =c^{2}$

A and B represent the side lengths (legs) and C represents the hypotenuse.

The length of one leg equals 5cm. (This can be represented by either a or b)

The hypotenuse equals 13 cm.

Plug these into the equation from above:

$a^{2} + (5^{2}) = (13^{2})$

Solve for the other leg:

$a^{2} + 25 = 169$ Square what's in the parentheses from above

$a^{2} = 144\\$ Subtract 25 from 169

$\sqrt{a^{2} } = \sqrt{144}$ Square root both sides

a = 12 cm

Thus, the length of the other leg is 12 cm.

Let's check our answer:

$12^{2} +5^{2} =13^{2}$ Square everything

144 + 25 = 169 Add

169 = 169

Because both sides are equal it means that 12 cm is the correct answer.

Hope this helps!!

3 0

1 year ago

Wait please help I’m so confused

kkurt [141]

X=7 since you need to make an equation and in one hour you make $7. Don’t include the 1 as in 1x cause that’s incorrect

8 0

2 years ago

Nonsense will be Reported!!

USPshnik [31]

Step-by-step explanation:

1. when x is 0

y will be

4x+2y=10

4(0)+2y=10

0+2y=10

collect like terms

2y=10-0

2y=10

divide both sides by 2

2y/2=10/2

y=5

so when x =0 y will equal to 5

2. when x is 1

y will be

4x+2y=10

4(1)+2y=10

4+2y=10

collect like terms

2y=10-4

2y=6

divide both sides by two

2y/2=6/2

y=3

so when x is 1, y is 3

3. when x is 2

4x+2y=10

4(2)+2y=10

8+2y=10

(CLT) 2y=10-8

2y =2

y= 1

6 0

1 year ago

Read 2 more answers

What is 37 and 1/2 simplified?

yarga [219]

37 and 1/2 could mean:
37+ (1/2)
37 times 1/2

37+1/2=37 and 1/2 or 37.5

37 times 1/2=37/2=18 and 1/2=18.5

3 0

3 years ago