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3 years ago

5

Mrs.Brown gives two tests to her class. 30% of the class passed both tests and 45% of the class passed the first test. What perc

ent passed the second test given that they passed the first test?

1 answer:

Nady [450]3 years ago

4 0

Answer:

15%

30 percent passed BOTH tests.....Only 15% passed ONLY first test

30/(30+15) = 67% of those who passed the first test ALSO passed the second test.

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Three questions about areas of triangles

masha68 [24]

Answer:

How to find the area, how to find the high, and how to find the side.

Step-by-step explanation:

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2 years ago

The graph of y = x^3 is transformed as shown in the graph below. Which equation represents the transformed function?

Kay [80]

Answer:

y = -6 * x^3

Step-by-step explanation:

We can model the new function as:

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As the negative values of x have positive values of y and vice-versa, the first change is to put a negative sign in front of x^3, so we know that 'a' is negative.

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2 years ago

Is The polar form of a complex number is unique?

Pie

Answer:

no

Step-by-step explanation:

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2 years ago

The number 64 has the property that it is divisible by its units digit. How many whole numbers between 10 and 50 have this prope

sineoko [7]

Answer:

$\large \boxed{17}$

Step-by-step explanation:

Let's call the numbers "<em>tu</em>", where<em> t</em> is the tens digit and <em>u</em> is the units digit.

We can solve this by the "brute force" method — examining each number to see if it satisfies the conditions.

$\begin{array}{cccl}\mathbf{u}&\mathbf{tu}& \textbf{Divisible by u} & \\0 &20, 30, 40 & 0 & \text{Division by zero is impossible}\\1 & 11, 21, 31, 41 & 4& \text{All numbers are divisible by one}\\2 & 12, 22, 32, 42 & 4 & \text{All even numbers are divisible by two}\\3 & 13, 23, 33, 43 & 1 &\text{Only 33 is divisible by three}\\4 & 14, 24, 34, 44 & 2 & \text{Only 24 and 44 are divisible by four}\\5 & 15, 25, 35, 45 & 4 & \text{Numbers ending in 5 are divisible by five}\\\end{array}$

$\begin{array}{cccl}6 & 16, 26, 36, 46 & 1 & \text{Only 36 is divisible by six}\\7 & 17, 27, 37, 47 & 0 & \text{None of the numbers is divisible by seven}\\8 & 18, 28, 38, 48 & 1 & \text{Only 48 is divisible by eight}\\9 & 19, 29, 39, 49 & 0 & \text{None of the numbers is divisible by nine}\\& \textbf{TOTAL =} &\mathbf{17}& \\\end{array}\\\text{$\large \boxed{\mathbf{17}}$ numbers between 10 and 50 are divisible by their units digit}$

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2 years ago

What does the |8| mean

Oxana [17]

Answer:

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3 years ago

Read 2 more answers