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natulia [17]
3 years ago
13

Mr. larsenʹs third grade class has 22 students, 12 girls and 10 boys. two students must be selected at random to be in the sprin

g play. what is the probability that one boy and one girl will be chosen? order is not important.
Mathematics
1 answer:
Lelu [443]3 years ago
6 0
P(1\ boy+1\ girl)=\frac{12C1\times10C1}{22C2}=0.5195
The answer is 0.5195
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Can you please add the table so i can answer it

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A candidate took a phone poll of 110 people. Of the 110 people polled, 87 said they would vote for the other person. There are 9
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Option B

7569 number of people are going to vote for the other candidate

<em><u>Solution:</u></em>

Given that candidate took a phone poll of 110 people

Of the 110 people polled, 87 said they would vote for the other person

There are 9570 people in the district

You can set up this problem like a proportion

Let "x" be the number of people who would vote for the other candidate

\frac{87}{110} = \frac{x}{9570}

To solve proportions, you cross-multiply. This means you multiply the numerator by the other denominator, and the denominator by the other numerator

87 \times 9570 = 110 \times x

832590 = 110x

x = 7569

Thus 7569 number of people are going to vote for the other candidate

6 0
3 years ago
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Alvin is 7 years older than Elga. The sum of their ages is 97. What is Elga's age?
LenaWriter [7]

Elga's age = x

Alvin's age = x + 7

x + x + 7 = 97.

Simplify the left side of the equation

2x + 7 = 97.

Subtract 7 from each side

2x = 90.

Divide each side by 2

x = 45

Since x is equal to Elga's age, Elga is 45 years old

4 0
3 years ago
What’s 45 in scientific notation
Mashcka [7]

Answer

is 45 written as 4.5 x 101 in scientific notation

Step-by-step explanation:

Can i Be mark as the brainliest answer PLEASE!

8 0
3 years ago
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21.) A rectangle has an area of 36 square units. As the length and width change, what do you know about their
natima [27]

Answer:

the length and the width are inversely proportional to each other (l=\frac{36}{w} or w=\frac{36}{l})

Step-by-step explanation:

Let

l units = length of the rectangle,

w units = width of the rectangle.

The area of the rectangle is

\text{Area}=\text{Length}\cdot \text{Width}

A rectangle has an area of 36 square units, so

l\cdot w=36

Complete the table with some values of l and w that fit the previous formula:

\begin{array}{ccc}\text{Length}&\text{Width}&\text{Area}\\ \\36&1&36\cdot 1=36\ un^2.\\18&2&18\cdot 2=36 \ un^2.\\12&3&12\cdot 3=36\ un^2.\\ 9&4&9\cdot 4=36\ un^2.\\l&w&l\cdot w=36 \ un^2.\end{array}

As you can see, the length and the width are inversely proportional to each other (l=\frac{36}{w} or w=\frac{36}{l})

4 0
4 years ago
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