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lubasha [3.4K]
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?
​
Mathematics
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

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the price of a pair of shoes increases from $50 to $64. What is the percent increase. Please Help, god bless
Vera_Pavlovna [14]

Answer:

Step 1: Calculate the change by subtracting old cost ($50) from the new cost ($64)

Step 2: Divide that change by the old cost ($50).  You will get a decimal number

Step 3: Convert the decimal number to a percentage by multiplying by 100%

Step-by-step explanation:

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2 years ago
Use properties of addition and subtraction to evaluate the expression. −24−8−26 Enter your answer in the comments below.
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Determine where to place the decimal point in the dividend and divisor so that the quotient is between 23 and 25
timama [110]

Answer:

Place the decimal before the last digit in both number i.e. 1602.3 and 65.4

Step-by-step explanation:

We are given the numerical expression 16023÷654.

Here, we have,

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it is required that the quotient of the division to be between 23 and 25.

If we take the numbers,

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This gives us,

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7 0
2 years ago
A right cylinder has a radius of r inches and height of 2r inches.
Bess [88]

Answer:

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Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, a cylinder.

Given data

Volume v =  ?

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Height h=   2r in

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3 years ago
Start with five blocks in the first group. In the second group, add five more blocks than the first group for a total of 10 bloc
slava [35]
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7 0
3 years ago
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