3 years ago

10. A bag contains black and white marbles. Overall, there are 36 marbles in the bag. If there are

Mathematics

1 answer:

joja [24]3 years ago

3 0

Answer:

25 black and 11 white

Step-by-step explanation:

lets say black marbles are x and white marbles are y

x+y=36

y+14=x

So: y+14+y=36

2y=22

y=11

Hence, x=25

Hope that helps!

You might be interested in

In ABC the measure of angle A is 2x+4 , the measure of angle B is 4x+2 , and the measure of angle C is 2x-1. What are the measur

Lynna [10]

(2x+4)+(4x+2)+(2x-1)=180
8x+5=180°
8x=180-5
8x=175
X=21.875
A= 2(21.875)+4=47.75
B=4(21.875)+2 =89.5
C=2(21.875)-1=42.75

5 0

3 years ago

Read 2 more answers

The $25.00 shirt costs the store $20.00. Find the markup rate.

pochemuha

Answer:

25%

Step-by-step explanation:

3 0

3 years ago

En la ruta que un automovilista recorre para trasladarse a su trabajo existen dos intersecciones con señalamientos de tránsito.

wolverine [178]

Answer:

a) 0.15

b) 0.2

c) 0.6

Step-by-step explanation:

3 0

2 years ago

Find x so that (x,-14) is a solution to 2x+3y=12

Monica [59]

Answer:

Question:

Find $x$ so that $(x,-14)$ is a solution to $2x+3y=12$ .

Step-by-step explanation:

So we are asked to replace $y$ with -14 and solve for $x$ in the equation:

$2x+3y=12$ .

$2x+3y=12$ with $y=-14$ :

$2x+3(-14)=12$

$2x-42=12$

Add 42 on both sides:

$2x=54$

Divide both sides by 2:

$x=27$ .

So the $x$ -coordinate that corresponding to $y=-14$ is $27$ .

Verify that:

$(27,-14)$ is a point satisfying $2x+3y=12$ .

Replace $x$ with 27 and $y$ with -14:

$2(27)+3(-14)=12$

$54+-42=12$

$12=12$ is true so our work must be right.

3 0

3 years ago

Please answer this question 4(x+y)+2(x+z)

frez [133]

expand the brackets

4x+4y + 2x +2z

6x + 4y + 2z

4 0

3 years ago

Read 2 more answers