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RSB [31]
3 years ago
5

Somando 54 , ao dobro de aum número , obteremos 182 . Qual é esse número?

Mathematics
1 answer:
Tanzania [10]3 years ago
7 0
What is it in English please
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Can somebody pls help me with this assignment!
valkas [14]
Top right it is constant 15 dollars / 3 moths
8 0
3 years ago
What two numbers multiply to 16 and add to 4?
alukav5142 [94]

You said that (xy) = 16, and (x+y) = 4 .

From the second equation you can get [ x = 4 - y ],
then substitude that for 'x' in the first equation, and
finally, rearrange the first equation to read
                                                                   <u>x² - 4x + 16 = 0</u>

Don't even try to factor that quadratic equation.  Go straight
to the quadratic formula, and the two solutions you find are ...

         <em>x = 2 + i 2√3</em>
and
         <em>x = 2 - i 2√3</em> .

Those are the two number that do what you want.

There are no <u>real</u> numbers that can do it.


7 0
3 years ago
Read 2 more answers
Solve 3² (2 + 5) − 6.
azamat
3^2(7)-7
9*7-6
63-6
=57
8 0
4 years ago
Read 2 more answers
How do I find his out
Setler [38]
You would divide 1/16 by 3/8
3 0
4 years ago
A test is worth 80 points. Multiple-choice questions are worth 2 points, and
gavmur [86]

Answer:

<u>There are 10 multiple-choice questions and 15 short-answer questions in the test</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Test worth 80 points

Multiple-choice questions are worth 2 points

Short-answer questions are worth 4 points

Multiple-choice questions + Short-answer questions = 25

2. How  many multiple-choice questions are there?

Let's solve this problem, this way:

m = Multiple-choice questions

s = Short-answer questions

Our equations system is:

m + s = 25

2m + 4s = 80

Solving for m in the 1st equation:

m + s = 25

m = 25 - s

Substituting m in the 2nd equation and solving for s:

2m + 4s = 80

2 * ( 25 - s) + 4s = 80

50 - 2s + 4s = 80

2s = 80 - 50

2s = 30

<u>s = 30/2 = 15</u>

Substituting s in the 1st equation and solving for m:

m = 25 - 15

<u>m = 10 </u>

<u>There are 10 multiple-choice questions and 15 short-answer questions in the test</u>

4 0
3 years ago
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