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3 years ago

How do you solve the equation 2x - 125 = 400

2 answers:

6 0

You add -125 by its opposite which is 125 so 2x(-125+125)=400+125
2x=525
You then divide both sides by 2 and you get
X=262.5

djyliett [7]3 years ago

3 0

2x-125=400

Add 125 to both sides

2x-125+125=400+125

2x=525

Divide both sides by 2

2x/2=525/2

x= 262.5

Let me check if my work is good

2(262.5)-125=400

525-125=400

400=400

So yes , my answer is good and I hope its help !

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The ratio of boys to girls on a swimming team is 4 to 3. The team has 35 members how many are girls

diamong [38]

Answer:

See below:

Step-by-step explanation:

Hello! I hope you are having a nice day. My name is Galaxy and I will be helping you today!

We can solve this problem in two steps, one being Comprehension and another being Solving. I'll start off with Comprehension.

Comprehension

We can see that based of the problem, for every batch of 7 kids, there are 4 boys and 3 girls. That means that we can split the total, which is 35, into groups of 7 and seeing how many girls and boys there are.

Now that we know what we need to figure out and what to do, we can begin solving.

Solving

So, for every group of 7 kids there are 4 boys and 3 girls. We can divide 35 by 7 to find how many of these identical groups there are.

$35 \div 7=5$

We know that there are 5 such groups of 4 boys and 3 girls each. Therefore, we can multiply 4 and 3 by 5 as there are 5 such groups to find our total.

$4*5=20\\$

We know there are 20 boys.

$3*5=15$

We know there are 15 girls.

We can check this by seeing if this adds up,

$15+20=35?\\35=35$

Therefore, our answer is there are 15 girls and 20 boys.

5 0

2 years ago

Read 2 more answers

How do you compare two-way frequencies in a relative frequency table

Nikolay [14]

To avoid such problems when comparing the categorical variables in a two-way frequency table, we need to exam the table by separate categories (rows or columns). When a relative frequency is determined based upon a row or column, it is called a "conditional" relative frequency.
Two-way relative frequency tables show what percent of data points fit in each category. ...
For example, here's how we would make column relative frequencies:
Step 1: Find the totals for each column.
Step 2: Divide each cell count by its column total and convert to a percentage.

3 0

3 years ago

I am trying to get the intersection of 8-16-24-32 and16-32-48

kakasveta [241]

{8, 16, 24, 32}int.{16, 32, 48}={16, 32}

4 0

3 years ago

Jillian is 5 years old. She has an older brother whose age is represented by the expression 2x+3, where x represents Jillian's a

abruzzese [7]

Answer:

Step-by-step explanation:

2(5) = 10, +3 = 13 years old,, just use order of operations and plug in jillians age for the x