3 years ago

Name the three different types of proofs you saw in this lesson. Give a description of each.

Mathematics

1 answer:

natka813 [3]3 years ago

4 0

Answer:

we need to see a picture of something to answer your question.

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HELP ASAP PLZ. This is vital to my math grade, This is the first of three questions I have. It is interval notation. The answer

katen-ka-za [31]

Answer:

Step-by-step explanation:

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3 years ago

Four brothers and their sister have the average age 7. Four brothers have the average age 6. How old is the sister?

AnnyKZ [126]

Answer:

11 years old

Step-by-step explanation:

If four brothers have the average age 6, then the sum of their ages is

$4\cdot 6=24$

years.

Let x years be the age of sister. If four brothers and their sister have the average age 7, then

$\dfrac{24+x}{5}=7.$

Multiply this equation by 5:

$24+x=35\Rightarrow x=35-24=11.$

The sister is 11 years old.

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3 years ago

Twenty percent of a number is 14. find the number

7nadin3 [17]

The answer is: 70 .
___________________________________________
Explanation:
_________________________________

(20/100) x = 14; solve for "x".

(20/100) = 2/10 = 1/5 ;

(1/5) x = 14

x/5 = 14 ;

x = 14 * 5 ;

x = 70 . The answer is: 70 .
___________________________________

5 0

3 years ago

Read 2 more answers

What is a bar graph ?

Gre4nikov [31]

Answer:

a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width.

Step-by-step explanation:

5 0

3 years ago

9/2 divided by 1/4= ? in simplest form

Allisa [31]

Answer: 18

<u>Do Keep Change Flip (KCF)</u>

Keep: 9/2

Change: ÷ into ×

Flip: 1/4 into 4/1

Your new problem should be 9/2×4/1

<u>Multiply</u>

9/2×4/1=36/2

36/2=18

Final Answer: 18

7 0

3 years ago