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matrenka [14]
3 years ago
11

The probability that you can randomly select a red marble from a group of 40 marbles is 720 how many red marbles are there

Mathematics
1 answer:
defon3 years ago
6 0
The answer is 28 red marbles
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10) the LAST ONE Use Distributive Property and Combine Like Terms to simplify the expression below HELP PLZ PLZ PLZ
pishuonlain [190]

Answer:

84n-27

Step-by-step explanation:

-9(1-10n)-2(3n+9)

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What is the interquartile range of the data set?
Andrej [43]

Answer:

Should be 10 if there is nothing for th stem value of 3.

Step-by-step explanation:

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3 years ago
3. Sophia starts a job at a restaurant. She
erastova [34]

Answer:

Step-by-step explanation:

x_0=0

x_1 =  $40

so delta change is $40.  Now we can write the equation as

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3 years ago
If x-2y=1 and 2x+3y=9 then what is x
yan [13]
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6 0
3 years ago
Y is inversely proportional to x.
Inessa [10]

Answer:

1. xy = 63

2. y = 3

Step-by-step explanation:

Given

Variation: inverse Proportion

y = 7, x = 9

Required

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- Find y when x = 21

Given that thee variation is inversely proportional;

This implies that

y\ \alpha\ \frac{1}{x}

Convert variation to equation

y\ = \frac{k}{x} ----------- Equation 1

Where k is the constant of variation

Substitute 7 for y and 9 for x in equation 1

7 = \frac{k}{9}

Multiply both sides by 9

9 * 7 = 9 * \frac{k}{9}

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Substitute 63 for k in equation 1

y = \frac{63}{x}

Multiply both sides by x

x * y = \frac{63}{x} * x

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Hence, the equation connecting x and y is xy = 63

Solving for when x = 21

Substitute 21 for x in the above equation

21 * y = 63

Divide both sides by 21

\frac{21 * y}{21} = \frac{63}{21}

y = 3

4 0
3 years ago
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