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2 years ago

Solve the equation. 9-(-2)

Mathematics

2 answers:

Ugo [173]2 years ago

8 0

Answer:

Step-by-step explanation:

Two negatives cancel each other out and makes the equation 9+2. 9+2 equals 11.

Helen [10]2 years ago

4 0

Answer:

Step-by-step explanation:

when you have 2 negative symbols in an equation (subtraction symbol & the negative symbol with the 2), they both turn into positives.

It becomes 9+2=11

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Write twenty-four minus the product of three and two as a numerical expression

JulijaS [17]

Step-by-step explanation:

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2 years ago

I need help this Question

Delicious77 [7]

Using the combination formula, it is found that the number of ways to choose the presenters is given by:

C. 462.

The order in which the presents are chosen is not important, hence the <em>combination formula</em> is used to solve this question.

<h3>What is the combination formula?</h3>

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by:

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this problem, 6 students are chosen from a set of 11, hence the number of ways is given by:

$C_{11,6} = \frac{11!}{6!5!} = 462$

More can be learned about the combination formula at brainly.com/question/25821700

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1 year ago

if you think that Andy solved the problem correctly, explain how you can tell he is correct. If not, identify and explain all er

nasty-shy [4]

Answer:

25 lol

Step-by-step explanation:

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2 years ago

Lee watches TV for 3 hours per day. During that time, the TV consumes 250 watts per hour. Electricity costs (12 cents)/(1 kilowa

lana66690 [7]

<h2>184 cents in a month. </h2><h2>All you have to do is multiply 12 cents by 3 hours.Making it 36.</h2><h2>Then multiply 36 by 30.</h2>

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3 years ago

The ratio of the number of boys to the number of girls in a school is 5:7.If there are 600 students in the school,how many girls

nekit [7.7K]

So,

The secret to solving problems with ratios is to find the value of one unit.

5:7 = 12 units total

To find one unit, divide the total number of students by the total number of units.
600/12 = a

Simplify
50/1 = a
50 = a

The value of each unit is 50.

Now, multiply the units by the numbers in the ratio.
50(5) = b
250 = boys

50(7) = x
350 = x

There are 350 girls.

3 0

2 years ago

Read 2 more answers