Ask question

Ask question

All categories

2 years ago

11

A bag contains 140 balls of various colours. If 30 red balls are added to the bag the proportion of red balls in the bag is doub

led. How many red balls were in the bag to begin with?

1 answer:

Elodia [21]2 years ago

8 0

Answer:

30

Step-by-step explanation:

because in order for something to double you need it times 2 or add itself together like 30+30 is 60 and that just doubled the original number 30

You might be interested in

Solve Ax + By = C for x.

Zolol [24]

Answer:

the first option

Step-by-step explanation:

Given

Ax + By = C ( subtract By from both sides )

Ax = C - By ( divide both sides by A )

x = $\frac{C-By}{A}$

7 0

3 years ago

George studied 3/4 hour on monday and 7/8 hour on tuesday. how long did he study altogether on both days?

pentagon [3]

$\dfrac{3}{4}+\dfrac{7}{8}=\dfrac{3\cdot2}{4\cdot2}+\dfrac{7}{8}=\dfrac{6}{8}+\dfrac{7}{8}=\dfrac{6+7}{8}=\dfrac{13}{8}=\dfrac{8+5}{8}=\dfrac{8}{8}+\dfrac{5}{8}=1\dfrac{5}{8}\\\\Answer:\boxed{1\frac{5}{8}\ hour.}$

5 0

3 years ago

qaws [65]

Answer:

1. coefficient

2. variable

3. constant

Step-by-step explanation:

3 0

2 years ago

I NEED HELP PLEASE!!!!!!!

Nostrana [21]

1) 7 hours and 33 minutes
2) 28
3) y = 7
4) a times a times a times a

7 0

2 years ago

Three consecutive even integers have a sum of -48. Find the largest integer.

kobusy [5.1K]

Answer:

<h3> - 14</h3>

Step-by-step explanation:

{x - some integer}

2x - the first even integer

2x+2 - the second consecutive even integer

2x+4 - the third consecutive even integer (the largest)

2x + 2x+2 + 2x+4 - the sum of three consecutive even integers

2x + 2x+2 + 2x+4 = -48

6x + 6 = -48

÷3 ÷3

2x + 2 = -16

+2 +2

2x+4 = -14

6 0

3 years ago