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Wittaler [7]
3 years ago
11

There are 13 boys and 15 girls in Ms. Green’s 3rd period math class. Five girls and four boys have already been called on today.

If Ms. Green does not call on the same student twice, what is the probability the next student she calls on will be a girl?
Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
The probability that the teacher will choose a girl would be 10/9. I it needs to be simplified it would be 1 1/9
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Solve for the variable:<br> √5-x= √6-x
maxonik [38]

Answer:

There are no solutions. this equation  seems wrong

Step-by-step explanation:

5 0
2 years ago
How many bananas are needed to make the third scale balance?
frozen [14]

The number of bananas required to make the third scale balance is 3.

<h3>What is a scale?</h3>

A scale is a tool used for weighting objects. If the objects on each side weigh the same the scale is balanced. Based on this, let's determine the possible weight of each fruit to balance the last scale.

  • Scale 1 (10 bananas/ 2 pineapples)

It is known 10 bananas weigh as much as 2 apples, but to solve this problem let's assume 10 bananas weigh a total of 1000 grams.

  • 10 banans = 1000 grams = each banana weighs 100 grams
  • 2 pineapples =  1000 grams = each pineapple weighs 500 grams

Scale 2 ( 1 pineapple / 2 bananas, 1 apple)

Using the same imaginary weights let's find the weight of the apple.

  • 1 pineapple = 500 grams
  • 2 bananas = 200 grams
  • 1 apple = 300 grams (500 - 200 = 300)

Scale 3 (1 apple /x )

We know 1 apple is equal to 300 grams and 1 banana is equal to 100 grams. Based on this, the number of bananas to balance the scale is 3.

Learn more about balance in: brainly.com/question/7181548

8 0
2 years ago
877 to binary, octal, and hexadecimal
statuscvo [17]
Our number system is in base 10, which means that each digit has a value that is a multiple of 10.

For ex:
877 literally means
8  7  7   where each digit is multiplied by
10^ 2   10 ^1   10^0  respectively
which is 8 * 10^ 2 + 7 * 10^1 + 7 * 10^0 = 8 * 100 + 7 * 10 + 7 * 1 = 800 + 70 + 7 = 877

Binary is in base 2, so each of its digits (which can only be 0 or 1) are multiplied by multiples of 2 (2^0, 2^1, 2^2 ect.)

To find what 877 is in binary you can do the following:
the symbol : means divide and i'll write the quotient + the remainder

877 : 2 = 438 + 1  (438 is the quotient, 1 is the remainder)
438 : 2 = 219 + 0
219 : 2 = 109 + 1
109 : 2 = 54 + 1
54 : 2 = 27 + 0
27 : 2 = 13 + 1
13 : 2 = 6 + 1
6 : 2 = 3 + 0
3 : 2 = 1 + 1
1: 2 = 0 + 1

now write ALL off the remainders from BOTTOM to TOP:
1101101101

use a similar step for octal (use 8 instead of 2 as the divisor) and hexidecimal (use 16 instead of 2 as the divisor) 


6 0
3 years ago
Got another question for you guys! What is 12.5 x 4.2?
yarga [219]

Answer:

52.5

Step-by-step explanation:

3 0
2 years ago
9y + 6 + 2(5 + y) = blank y + blank
maria [59]

Answer:

<h2><em>1</em><em>1</em><em>y</em><em>+</em><em>1</em><em>6</em></h2>

<em>Solution</em><em>,</em>

<em>9y + 6 + 2(5 + y) \\  = 9y + 6 + 10 + 2y \\  combine \: like \: terms \\  = 9y + 2y + 6 + 10 \\ simplify \\  = 11y + 16</em>

<em>hope </em><em>this </em><em>helps.</em><em>.</em><em>.</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em>

5 0
2 years ago
Read 2 more answers
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