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3 years ago

Which expression is equivalent 30 points

Mathematics

2 answers:

elixir [45]3 years ago

7 0

Answer:

30b

Step-by-step explanation:

what you do is times 6 and 5 then add b

Ymorist [56]3 years ago

6 0

~Hello There!~

There is a rule you must know to do this question:

A negative number multiplied by a negative number, makes a positive number.

Therefore:

- 6 * - 5b = 30b

Hope This Helps You!

Good Luck :)

Have A Great Day ^-^

- Hannah ❤

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The probability of the given condition is 28/165.

Given that, there are four boys and eight girls in a class.

We need to find the probability of the given question.

<h3>What is probability?</h3>

The probability is defined as the chances of happening of any random event or the possibility of happening of any event is called the probability.

The teacher randomly selects three different students to answer questions.

The first is the student is a girl, the second student is a boy, and the third student is a girl.

The total number of students=12, the number of boys=4 and the number of girls=8.

Now,

Step 1: The first student is a girl=8/12

Step 2: The second student is a boy=4/11

Step 3: The third student is a girl=7/10

In the first step, you select one of 8 girls among 12 students.

In the second step, you select one of 4 boys among the remaining 11 students.

In the third step, you select one of the remaining 7 girls among the remaining 10 students.

Thus, probability=(8/12)×(4/11)×(7/10)=28/165

Therefore, the probability of the given condition is 28/165.

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1 year ago

I found some shirts for Jonah that were 40 percent of their regular price I bought him 3 shirts and each one was regularly price

Alekssandra [29.7K]

Answer:

32.40

Step-by-step explanation:

The shirts were 40% of the regular price

The sale price of 1 shirt was

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18*.40 =7.20

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He paid 21.60

The price he would have paid without the discount is

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Alex_Xolod [135]

For this we almost have the following equation:
$h = -16t ^ 2 + 25
$
We must match the equation to zero:
$-16t ^ 2 + 25 = 0
$
From here, we clear the value of t.
We have then:
$16t ^ 2 = 25

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We discard the negative root because we are looking for time:
$t = \sqrt{ \frac{25}{16} } 

$
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Answer:
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Answer:

Step-by-step explanation:

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