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LenaWriter [7]
2 years ago
15

Can someone answer 3 of the five questions?

Mathematics
2 answers:
DerKrebs [107]2 years ago
8 0
The answer is A is equal to 2
Evgen [1.6K]2 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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TRUE OR FALSE
Zielflug [23.3K]

Answer:

true

Step-by-step explanation:

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2 years ago
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Help! I need help. My teacher made it an anime one. If todoroki had 7 ’s how much will he get when he has 67352 if you needed to
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Step-by-step explanation: 471,464

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Marty made a $220 bank deposit using $10 bills and $5 bills. She gave the teller a total of 38 bills, how many $5 bills were in
Luda [366]

ANSWER: 32 five-dollar bills

======

EXPLANATION:

Let x be number of $5 bills

Let y be number of $10 bills

Since we have total of 38 bills, we must have the sum of x and y be 38

x + y = 38 (I)

Since the total amount deposited is $220, we must have the sum of 5x and 10y be 220 (x and y are just the "number of" their respective bills, so we multiply them by their value to get the total value):

5x + 10y = 220 (II)

System of equations:

\left\{ \begin{aligned} x + y &= 38 && \text{(I)} \\ 5x + 10y &= 220 && \text{(II)} \end{aligned} \right.

Divide both sides of equation (II) by 5 so our numbers become smaller

\left\{ \begin{aligned} x + y &= 38 && \text{(I)} \\ x + 2y &= 44 && \text{(II)} \end{aligned} \right.

Rearrange (I) to solve for y so that we can substitute into (II)

\begin{aligned} x + y &= 38 && \text{(I)} \\ y &= 38 - x \end{aligned}

Substituting this into equation (II) for the y:

\begin{aligned} x + 2y &= 44 && \text{(II)} \\ x + 2(38 - x) &= 44\\ x + 76 - 2x &= 44 \\ -x &= -32 \\ x &= 32 \end{aligned}

We have 32 five-dollar bills

======

If we want to finish off the question, use y = 38 - x to figure out number of $10 bills

y = 38 - 32 = 6

32 five-dollar bills and 6 ten-dollar bills

7 0
3 years ago
Reply with quote<br> {(-1,3),(0,5),(1,7),(2,9)} , identify the domain and range
Contact [7]

The domain is -1,0,1,2. The range is 3,5,7,9.

4 0
2 years ago
1. Find the volume of a cone with a diameter of 14 cm and a height of 25 cm.
slega [8]

Answer:

V≈1282.82

Step-by-step explanation:

V=πr^2h

3=π·72·25

3≈1282.817

8 0
2 years ago
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