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LenaWriter [7]
3 years ago
15

Can someone answer 3 of the five questions?

Mathematics
2 answers:
DerKrebs [107]3 years ago
8 0
The answer is A is equal to 2
Evgen [1.6K]3 years ago
8 0
2A) 8N = (64/8)N = 64*(N/8) = 64*(.25)
  8N = 16

2B) S:N:J = 5:3:1
  S - N = 5 - 3 = 2 "ratio units" = 16 games. Jay has 1 "ratio unit" of games.
  Jay has 8 games.

2C) The upper left box must be 6, so the boxes on the right must be 2, 3, 4 in some order. The top box cannot be 2 or 3 because those choices cause a number to be used twice. The top right box is 4, the middle right box is then 3, and the bottom box must be ...
  A = 2.

2D) 4 half-squares are unshaded for a total of 2 of the 9 squares. Then the 7 shaded squares are 14 cm², or 2 cm² per small square. The 9 small squares add to ...
  18 cm²

2E) The Nth triangular number is the sum of all positive integers N and below. That is, the 4th triangular number is 4 + 3 + 2 + 1 = 10. The 5th triangular number adds 5 to that sum, so is 15. The Nth triangular number is the number of handshakes there will be between N+1 people.
  If there are 15 handshakes, there are 6 people in the room.

(The Nth triangular number t(n) is given by t(n)=n(n+1)/2. This can give rise to a quadratic equation that you can solve to find the number of people.)
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Identifying the equivalent expression
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Answer:

\large\boxed{\sqrt{x+3}=(x+3)^\frac{1}{2}}

Step-by-step explanation:

\text{Use}\ a^\frac{1}{n}=\sqrt[n]{a}\\\\\sqrt{x+3}=\sqrt[2]{x+3}=(x+3)^\frac{1}{2}

6 0
3 years ago
Denise sold 24 more dresses in January than in February and 10 fewer dresses in March than in January. In March she sold 28 dres
Svet_ta [14]
Denise sold 14 dresses in February.
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3 years ago
A straight slide in a playground design makes an isosceles triangle with the
julia-pushkina [17]

Answer:

Option D.

Step-by-step explanation:

  • First, the you need ti understand that the triangle is an isosceles right angled triangle. In other words, the base and height are equal in length. The third side is the slide. This is the longest side.
  • Next, we know that the formula for calculating the area of a right angled triangle is given by:

        A = 1/2 (base × perpendicular height)

  • The perpendicular height is equal to the base. Let's say the base is <em>x</em>. It means that the height is also x, since height = base.
  • Therefore, the formula will be:

       A = 1/2 (x.x)

           =1/2 (x²)

      32 = 1/2 (x²)

     Multiplying both sides by 2 gives:

     32×2 = x²

     64  = x²

       8   = x

To find the third side, we use the Pythagoras theorem:

    C² = A² + B²

         = 8² + 8²

         = 128

   C = √128

       = 8√2

However, the answer will not be exact, so we  multiply the length of the base and height by 2. This gives x = 16 (Length of base = length of height)

Repeating the steps above gives C = √ (16)² + (16)²

                                                           = √256

This corresponds to option D.

3 0
3 years ago
What is 1/6÷7/8 as a fraction in lowest terms
Brrunno [24]

Answer:

the answer is 5 1/4

Step-by-step explanation:

because u flip it then multiply then u get ur answer

6 0
3 years ago
What is another way to write the calculation add 16 and 25, and then multiply by 47?
GarryVolchara [31]

Answer:

(16+25)×47

Step-by-step explanation:

..........

8 0
2 years ago
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