Ask question

Ask question

All categories

2 years ago

14

Five less than four times a number is nine more than twice a number

2 answers:

Leokris [45]2 years ago

7 0

5-4a=9+2a
Hope this help

7nadin3 [17]2 years ago

7 0

Answer:

7

Step-by-step explanation:

We do not know the number, so we will let a variable take its place. I will be using n to represent this unknown number.

n=mystery number

Now that we have a variable, we can perform operations on it. Five less than four times a number is multiplying the number by 4 and then subtracting it by 5.

4n-5

Assuming that the second part is equal to the first part, nine more than twice a number is multiplying the number by 2 and then adding 9. We can set this equal to our previous expression.

4n-5=2n+9

2n-5=9

2n=14

n=7

Solving this equation is all we have to do to find the answer.

You might be interested in

jonathan had 72 pieces of recycling.he sorted them into 9 bins if each bin had the same amount , how many pieces of recycling we

Mkey [24]

8, 72 pieces of recycling sorted into 9 bins will make 8 in each bin.

8 0

3 years ago

Read 2 more answers

Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal

timurjin [86]

Answer:

fefe efwe wefw efwffwee ef ewwfwef we fwefwe we

Step-by-step explanation:

fweef efwgfwe r2323 fewerf wefwef23 ew2fefeff ej ufue f2343 4 343 433 3

7 0

2 years ago

I health club charges $35 a month for membership fees. Determine whether the cost of a membership is proportional to the number

Marina CMI [18]

35 + 35 =70 i guess its saying to add up the months so i guess its saying whats 35 + 35 =70 thats what i got

3 0

3 years ago

Read 2 more answers

Factorise 9w² - 100<br><br><br>

ohaa [14]

Answer:

$9\, w^{2} - 100 = (3\, w - 10) \, (3\, w + 10)$ .

Step-by-step explanation:

Fact:

$\begin{aligned} & (a - b)\, (a + b)\\ =\; & a^{2} + a\, b - a\, b - b^{2} \\ =\; & a^{2} - b^{2} \end{aligned}$ .

In other words, $(a^{2} - b^{2})$ , the difference of two squares in the form $a^{2}$ and $b^{2}$ , could be factorized into $(a - b)\, (a + b)$ .

In this question, the expression $(9\, w^{2} - 100)$ is the difference between two terms: $9\, w^{2}$ and $100$ .

$9\, w^{2}$ is the square of $3\, w$ . That is: $(3\, w)^{2} = 9\, w^{2}$ .
On the other hand, $10^{2} = 100$ .

Hence:

$9\, w^{2} - 100 = (3\, w)^{2} - (10)^{2}$ .

Apply the fact that $a^{2} - b^{2} = (a - b) \, (a + b)$ to factorize this expression. (In this case, $a = 3\, w$ whereas $b = 10$ .)

$\begin{aligned}& 9\, w^{2} - 100 \\ =\; & (3\, w)^{2} - (10)^{2} \\ = \; & (3\, w - 10)\, (3\, w + 10)\end{aligned}$ .

8 0

2 years ago

How to simplify this?<br>(3a-b)+2a

taurus [48]

Combine like terms

3a + 2a = 5a

5a - b

5a - b is your answer

hope this helps

4 0

2 years ago

Read 2 more answers