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3 years ago

Whats 3-3+ -3 +3 its trivia

Mathematics

2 answers:

frozen [14]3 years ago

7 0

Answer:

Its still 0

Step-by-step explanation:

why the 3's though?

kotykmax [81]3 years ago

4 0

Answer:

Zero

Step-by-step explanation:

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What is the value of x to the nearest tenth? <br> x=2.1<br> x=3.4<br> x=9.6<br> x=13.1

dusya [7]

X /11.2 = 5.4 / 6.3 = 6/7

x = (6 * 11.2) / 7 = 9.6 answer

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4 years ago

nina wants to put color tiles on a square . 3 color tiles fit acroos the top of the square . how many rows and colum of tiles wi

pickupchik [31]

She will use 3 rows of 3 squares, for a total of 9 squares.

Since the shape she is covering is a square, all of the sides are equal. If 3 square tiles fit across the width of the top, then 3 square tiles fit across the length of it as well. This makes 3 by 3, or 9 squares.

8 0

4 years ago

How can you determine if you need to use a combination or permutation to count the number of outcomes? Which will usually have m

Nadya [2.5K]

Answer with Step-by-step explanation:

Permutation : It is an arrangement of r elements out of n elements.

Combination : it is a selection of r element out of n elements .

Suppose we have a set

S={1,2,3}

If two elements are taken at a time then

Using permutation formula

Total number of outcomes= $3P_2$

Total number of outcomes= $\frac{3!}{(3-2)!}$

Total number of outcomes=3!= $3\times 2\times1=6$

Using combination formula

$\binom{n}{r}=\frac{n!}{r!(n-r)!}$

Total number of outcomes= $\binom{3}{2}=\frac{3!}{2!1!}$

Total number of outcomes= $\frac{3\times2!}{2!}$

Hence, total number of outcomes=3

Total number of outcomes determined by permutation have more outcomes.

Because permutation is an arrangement of elements therefore, it consider order of arrangement of element but combination is a selection of elements it does no consider order of elements

Arrangements of two elements out of 3 elements

{1,2},{2,3},{2,1},{3,2},{1,3},{3,1}

By using combination if two elements taken at a time then combination

{1,2},{2,3},{1,3}

4 0

3 years ago

Mrs.Fahley announced a 50 point quiz. The quiz has 15 questions some questions worth 4 some worth 3 how many 4 point questions a

lys-0071 [83]

The four points questions are 5.

Step-by-step explanation:

Total points = 50

Total questions = 15

There are 4 points questions and 3 points questions.

Let,

x be the number of 4 points questions

y be the number of 3 points questions

According to given statement;

x+y=15 Eqn 1

4x+3y=50 Eqn 2

Multiplying Eqn 1 by 3

$3(x+y=15)\\3x+3y=45\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(4x+3y)-(3x+3y)=50-45\\4x+3y-3x-3y=5\\x=5$

As x variable was used for 4 points questions, therefore,

The four points questions are 5.

Keywords: linear equation, subtraction

Learn more about subtraction at:

#LearnwithBrainly

8 0

3 years ago

Katie wants to hang a painting in a gallery. The painting and frame must have an area of 45 square feet. The painting is 6 feet

julsineya [31]

Answer:

$4x^2+26x-3 = 0$

Step-by-step explanation:

Given that the total area of Frame and Painting is 45 Sq Fts.

Dimensions of painting are 6 feet and 7 feet. Hence.

Let us assume the uniform thickness of frame is x

Hence the Length of frame with painting = 7+2x

and breadth = 6+2x

Area of the frame = length * breadth

$45=(7+2x)(6+2x)\\45=42+14x+12x+4x^2\\45=42+26x+4x^2\\4x^2+26x+42-45\\4x^2+26x-3=0\\$

Hence option b is correct.

4 0

3 years ago