How you can know a fraction is equivalent to another fraction

Answers

Answer 1
Answer: The denominator. Say for instance, you have 4/12 and 1/6. They are equivalent.
Answer 2
Answer: Simplify all fractions. If they reduce to be the same fraction, then the fractions are equivalent.

Cross multiply. If the two products are equal, then the fractions are equivalent.

Get a common denominator and compare numerators.

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I need help
place each pair of angles in the correct column.

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What is the question?

In 2000, there were 7689 weekly newspapers in the United States. This s about 94% of the number of weekly newspapers in the United States in 1960. How many weekly newspapers were there in 1960? Round to the nearest whole number.

Answers

In 2000, 7689 weekly papers = 94% of number of weekly papers in 1960

Let weekly papers in 1960 be x.

           7689 =  94% of  x

           7689 = (94/100)*x

           7689 * 100/94  = x

           8179.787      ≈  x
              
               x    ≈  8179.787

Number of weekly newspapers in 1960 rounded to the nearest whole number = 8180

Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the lake, the rock's distance from the lake's surface changes at a rate of −6 inches per second. If Lisa holds her hand 4 feet above the lake's surface, how far from Lisa's hand is the rock 6 seconds after it hits the surface?

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In feet it is 7' but in inches it is 84"

Please help with work shown, i need it quickly!

Answers

adults=11 children=8
55x11=605
53x8=424
605+424=1029
1029 is the answer

Find the other two vertices of a square with one vertex (0, 0) and another vertex (4, 2). Can you find another answer?

Answers

It is given that two vertices of square are (0,0) and (4,2).

Now the problem is that you haven't given that whether these two vertices are adjacent vertices or opposite vertices of the square.

1. By Supposing that these two are adjacent vertices of Square

The third vertex will be at (-4,2) which lies in third quadrant.

Suppose the coordinate of fourth vertex be (x,y).

Mid point of line joining (4,2) and (-4,2) is{ [4+(-4)]/2,(2+2)/2} is (0,2).

Mid point of line joining (x,y) and (0,0) is (x/2,y/2).

Since diagonals of square bisect each other,

∵ x/2=0

⇒x=0

and

y/2=2

⇒y=4

So, The Coordinate of  fourth vertex is (0,4).

Now coming back to second condition if these are two opposite vertex of Square.

Let the third coordinate be (a,b).

Length of diagonal=√((4-0)^2+(2-0)^2)=\sqrt20=2\sqrt5

Now,let side of Square be A.

Then length of Diagonal of square =√2 A

⇒√2 A=2√5

⇒A =√10

As third vertex is (a,b).

Using distance formula

a² + b²=10  -------------(1)

(a-4)²+ (b-2)²=10  --------------(2)

Solving expression (1) and (2), we get

⇒a²+ b²=(a-4)² +(b-2)²

⇒2a + b =5

⇒b=5-2a

Putting the value of b in (1),we get

⇒a² +(5-2a)²=10

⇒a²+25+4a²-20a =10

⇒5a²-20a+15=0

⇒a² - 4a + 3=0

Splitting the middle term,we get

⇒(a-3)(a-1)=0

⇒a=3  ∧  a=1

we get b=5-2×1=3 and b=5-2×3=5-6=-1

So,the other vertex are (1,3) and(3,-1).





The other two vertices of the square are (-4, -2) and (-2, 4).

What are the other two vertices of a square with one vertex (0, 0) and another vertex (4, 2)?

To find the other two vertices of a square with one vertex at (0, 0) and another vertex at (4, 2), you can use the properties of a square, which has equal sides and right angles.

1. First, find the vector from the first vertex (0, 0) to the second vertex (4, 2). This vector represents one side of the square.

  Vector = (4 - 0, 2 - 0) = (4, 2)

2. Since the square has equal sides, you can move in the opposite direction of the vector to find the third vertex.

  Third Vertex = (0, 0) - (4, 2) = (-4, -2)

3. Now, to find the fourth vertex, you can rotate the vector by 90 degrees counterclockwise. To do this, swap the x and y components and negate the new x component:

  Fourth Vertex = (-2, 4)

So, the other two vertices of the square are (-4, -2) and (-2, 4).

Learn more on vertices here;

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You roll a number cube. You roll a number that is greater than 2 but less than 5.

Answers

The possible number you rolled is 3 and 4
The number you rolled must the larger than 2 which is 3, 4, 5, 6, on a cube, but it must be less than five so the possible number is 3 and 4.