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Naya [18.7K]
3 years ago
13

The total value of x 20 cent coins and y 5 dollar notes in cents

Mathematics
1 answer:
Mariana [72]3 years ago
3 0
<h2>Answer: </h2>

20 x + 500 y cents

<h2>Step-by-step explanation: </h2>

20 x cents already given in question

converting 5 y dollars into cents (1 dollar=100 cents, 5 dollars =500 cents)

5 y dollars =500 y cents

20 x cents+500 y cents

20 x + 500 y cents

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IrinaK [193]
The correct answer is a || move the constant over (5x=-15-5), combine like terms (5x=-20), divide both sides by 5 to get x alone (x=-20/5), solve (x=-4) || please mark brainliest
6 0
3 years ago
The formula v equals the square root of the quantity 64 multiplied by h end of quantity gives the velocity v in feet per second
NemiM [27]
The equation is derived from the conservation of energy, specifically from potential energy stored at a given height in a gravitational field.

When potential energy is completely converted to kinetic energy you have:

(mv^2)/2=mgh  divide both sides by the mass m

v^2/2=gh  multiply both sides by 2

v^2=2gh take the square root of both sides

v=√(2gh)  and working with imperial units for acceleration due to gravity, g=-32ft/s^2

v=√(-64h)  but the change of h as it falls is negative h so

v=-√(64h) so if an object falls from a height of 88ft we have:

v=-√(64*84)

v=-√5376

v≈-73.32 ft/sec (to the nearest hundredth of a foot per second)

Note that this is the velocity, it is negative 73.32 ft/sec.

The question inadvertently asked for velocity and provided answers for SPEED.  Velocity is a vector and has both magnitude and direction, whereas speed just has magnitude.

So its final speed is 73.32 ft/sec

So if they actually wanted velocity none of their answers is correct :P
5 0
2 years ago
Read 2 more answers
15. A birdhouse and the pole that it is on cast a shadow 15 feet long. If a person standing
never [62]

Answer:

12

Step-by-step explanation:

15 feet total amount combined by pole and birdhouse

4 foot tall person makes 5 feet long shadow

5x3=15

4x3=12 so the birdhouse and pole are 12 feet

4 0
2 years ago
Find all solutions to 2sin(θ)=√3 on the interval 0≤θ&lt;2π
makkiz [27]

Answer:

2sin(3θ) - √3 = 0

Step-by-step explanation:

 sin(3θ) = √3/2

 

3θ = π/3 + 2kπ or 2π/3 + 2kπ, k = 0, ±1, ±2, ±3,...

 

θ = π/9 + 2kπ/3, 2π/9 + 2kπ/3

 

If k = 0, we get θ = π/9, 2π/9

If k = 1, we get θ = 7π/9, 8π/9

If k = 2, we get θ = 13π/9, 14π/9

 

Other values of k give values of θ lying outside of the interval [0, 2π).

7 0
2 years ago
SOMEONE PLS HELP ME!!!!
STatiana [176]

Answer:

8. 6 shirts ($61)

9. $61

10. 32 shirts (256)

Step-by-step explanation:

To get the answers you could either graph the rates or create a table. Creating a table is easier to understand, graphing is much faster. I attached pictures of the graphs. Y axis being amount of $ and x axis being the amount of shirts.

Second graph is for questions 8 and 9

first graph for question 10

The difference is that i took out shipping for question 10

Table explains 8 and 9 more easily

4 0
3 years ago
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