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3 years ago

What two facts you double to find 8x4? explain

Mathematics

2 answers:

svlad2 [7]3 years ago

4 0

You would double 16 because 16+16=32

horsena [70]3 years ago

3 0

You can also do 4 times 8

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(2x^3+4x^2-3)+(6x^3+4x-4)<br>

sukhopar [10]

Answer:

8x^3 + 4x^2 + 4x -7

Step-by-step explanation:

Add like terms.

8 0

3 years ago

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Use for Questions 11-15

Juli2301 [7.4K]

Step-by-step explanation:

12. 136/300

=52%

13.45/300

=15%

6 0

2 years ago

I'd really appreciate it if you'd show your work for the question, it'd be lots of help! I'll give Brainliest! :)

Sonbull [250]

Let the number of ride tickets = x tickets.

And the total cost is given by y.

Fair charges $1.25 per ticket for the rides.

Johnny bought = 25 tickets.

Therefore, cost of 25 tickets @ $1.25 per ticket = 25 × 1.25 = $31.25

Total amount spent at the fair = $43.75.

Fair admission charge = Total amount spent - Cost of 25 tickets = 43.75 - 31.25 =$12.50.

Therefore, total cost of the fair = Fix fair admission charge + total cost of x number of tickets @1.25 each.

y = 12.50 + 1.25x.

Therefore, y = 12.50 + 1.25x is the linear equation that can be used to determine the cost for anyone who only pays for x ride tickets and $ 12.50 fair admission.

8 0

3 years ago

What percentage is the shaded area

Sati [7]

90%, as each section is 10 percent!

7 0

3 years ago

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A wind turbine is located at the top of a hill where the wind blows steadily at 12 m/s, and stands 37 m tall. The air then exits

marta [7]

Answer:

Power generated = 4.315 kW

Step-by-step explanation:

Given,

speed of wind when enters into the turbine, V = 12 m/s

speed of wind when exits from the turbine, U = 9 m/s

mass flow rate of the wind, m = 137 kg/s

According to the law of conservation of energy

Energy generated = change in kinetic energy

Since, the air is exiting at same elevation. So, we will consider only kinetic energy.

Energy generated in one second will be given by,

$E\ =\ \dfrac{1}{2}.mV^2-\dfrac{1}{2}.m.U^2$

$=\ \dfrac{1}{2}\times 137\times (12)^2-\dfrac{1}{2}\times 137\times (9)^2$

=4315.5 J

= 4.315 kJ

So, energy is generated in one second = 4.315 kJ

Power generated can be given by,

$P\ =\ \dfrac{\textrm{energy generated}}{time}$

And the energy is generated is already in per second so power generated will be 4.315 kW.

8 0

3 years ago