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evablogger [386]
3 years ago
13

You select a marble without looking and then put it back. If you do this 60 times, what is the best prediction possible for the

number of times you will pick a blue or a purple marble?
Mathematics
1 answer:
scoundrel [369]3 years ago
4 0

Answer:

There is a 1/20 chance.

Step-by-step explanation:

60 times would be 1/60.But that would be 1 and there are two marbles.So there is a 1/20 chance

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An orange has 20 fewer calories
tatyana61 [14]

Answer:

<em>90 calories in total</em>

Step-by-step explanation:

<em>We can solve this equation through the following steps:</em>

<em>Step One: Since we are told that a banana is 20 less calories than an orange, we can create the Let Statements:</em>

<em>Let x= the calories in a banana</em>

<em>Let x-20=the calories in an orange</em>

<em>Step Two: Create an equation</em>

<em>Since we are told "7 bananas have the same calories as 9 oranges" we translate"</em>

<em>7x=9(x-20) Distribute</em>

<em>7x=9x-180 Subtract 9x from both sides of the equation</em>

<em>7x-9x=-180 Simplify</em>

<em>-2x=180 Divide both sides by -2</em>

<em>x=90</em>

<em>∴There are 90 calories in a banana. </em>

5 0
3 years ago
20. Math and Science There are 6 pure
faltersainse [42]

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4 0
3 years ago
What is the equation of a line l that has an x-intercept of (5, 0) and is perpendicular to another line m that has a slope -5?
Alex777 [14]
D. y = 1/5x - 1

Plug in 5 for x and 0 for y, and solve for b in the equation y=mx+b

7 0
4 years ago
Read 2 more answers
What is the value of z?
weqwewe [10]

Answer:

z = 30.45 feet

Step-by-step explanation:

The volume (V) of a triangular prism is calculated as

V = area of triangular end (A) × length

Here V = 913.5 and length = 15, thus

A × 15 = 913.5 ( divide both sides by 15 )

A = 60.9 ft²

The area of the triangle = \frac{1}{2} bh ( b is the base and h the height ), thus

\frac{1}{2} × 4 × z = 60.9

2z = 60.9 ( divide both sides by 2 )

z = 30.45

3 0
3 years ago
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How is this equation properly graphed on the number line?
nika2105 [10]

Given the comopound inequality:

x\le7\text{ and x > -1}

Let's graph the compound inequality.

Here x is greater than -1 but less than or equal to 7.

To graph the inequality, we have:

[tex]-1Since x is greater than -1, plot an open dot on the point -1.

Also, x is less than or greater than 7, plot a closed dot on the point 7.

Then draw a straight line connecting both points.

Hence, we have the graph below:

8 0
2 years ago
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