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nadezda [96]
3 years ago
5

3 - 2n = 7 Show work please

Mathematics
2 answers:
belka [17]3 years ago
4 0
Answer & Explanation-

1. 3-2n=7

2. Subtract 3 from both sides to make x alone.

3. -2n=4

4. Divide both sides by -2

5. n=-2

Answer-

n=-2
vlada-n [284]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

3-2n=7

-3       -3

-2n=4

divide both sides by -2

n=-2

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2.3,2 4/5, 2.6 from least to greatest
Alex777 [14]
Hello there! 

Least to greatest of these problem

For the fractions you can simplify it make it easier for you to solve these types of problems

Anyhow! 

Let's find our answer, shall we? 

2.3 = 2.3 \\ \\  2\frac{4}{5} =  \frac{14}{5}  =  2.8 \\ \\ 2.6 = 2.6
 
Our answer: 2.3 \\ 2.6 \\  2\frac{4}{5}
4 0
3 years ago
There are 10 true-false questions and 20 multiple choice questions from which to choose a five-question quiz how many ways can t
beks73 [17]

Answer:

In 68229 ways can the quiz be selected such that there is atleast three multiple choice questions

Step-by-step explanation:

Given:

Number of True or false questions= 10

Number of multiple choice questions= 20

To Find:

How many ways can 5 questions can be selected if there must be at least three multiple choice questions =?

Solution:

Combination

A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter. In combinations, you can select the items in any order.  

The question States there sholud be ATLEAST 3 multiple choice question,

So, we may have

(3 Multiple choice question and 2 true or false question) or

(4 Multiple choice question and 1 true or false question) or

(5 Multiple choice question and 0 true or false question)

Required Number of ways = (20C3 X10C2) +(20C4 X10C1) + (20C5 X10C0)

Required Number of ways =(\frac{20!}{20!(20-3)!}\times\frac{10!}{10!(10-2)!})+(\frac{20!}{20!(20-4)!} \times \frac{10!}{10!(10-1)!}) +(\frac{20!}{20!(20-4)!} \times \frac{10!}{10!(10-0)!})

Required Number of ways = ( 1140 x 42) + (4845 x 10) +(15504 x 1)

Required Number of ways = 47880+48450+15504

Required Number of ways = 68229

3 0
2 years ago
What is 12.5% of 10 kg in grams​
Anastasy [175]

Answer:

1250 g

Step-by-step explanation:

12.5% of 10 kg

12.5% of 10000 g

.125 of 10000 g

.125 * 10000 g

1250 g

6 0
3 years ago
Read 2 more answers
Please please help me
Anarel [89]

so you are going to use the Pythagorean theorem on the smaller triangle to find the connecting side's length

{5}^{2}  = {3}^{2} ( {b}^{2} ) \\ b = 4

now you can find the bigger triangle's hypotenuse

{6}^{2}  +  {4}^{2}  =  {c}^{2}  \\

c=4

8 0
3 years ago
Which angles are supplementary to∠4? Select all that apply.
andrezito [222]

9514 1404 393

Answer:

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Step-by-step explanation:

All of the acute angles are congruent to each other. All of the obtuse angles are supplementary to them and are also congruent to each other. Angles 2, 3, 6, 7 are supplementary to angle 4. The ones on the list of choices are ...

  ∠2, ∠6, ∠7

6 0
3 years ago
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