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3 years ago

HELP PLSPPPPPPPPPPPPPPP

Mathematics

1 answer:

butalik [34]3 years ago

5 0

Answer:

The equation is following the mathematical rule of multiplying exponents.

Step-by-step explanation:

As an example to back up the answer, when you have half of a dollar, that is $0.50, if you took a half (1/2) of $0.50 that would be one fourth (1/4) of a dollar, but half of 50 cents ($0.50) A similar thing is happening with this problem. When you have two numbers (2 and 4) when you multiply them together, they equal to eight (8) for this problem, when you multiply two exponents together, you are raising the coefficient (a real number like 6) to the power of 2, and then taking that number and multiplying it by the power of 4. This is similar to the half of 50 cents, is equal to 1/4 of dollar ($0.25)

Hope this helps explain multiplying exponents together, and the mathematical rule behind it.

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sammy [17]

Answer:

Answer: 155.12km

Step-by-step explanation:

sin(64˚) x 78 = 70.11 (2DP)

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3 years ago

F(x)=x3;{-1,-0.5,0,0.5,1}

EastWind [94]

Answer:

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Step-by-step explanation:

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3 years ago

In a 100m race an athlete took 9.8 seconds:

Xelga [282]

Step-by-step explanation:

b) average velocity : ∆x/∆t = 100/9.8 ≈ 10.204 m/s

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3 years ago

Rachel measured the lengths of a random sample of 100 screws. The mean length was 2.9 inches, and the population standard deviat

MaRussiya [10]

Answer:

z = 10

Step-by-step explanation:

The value of the z-statistic is given by:

$z = \frac{X - \mu}{s}$

In which:

X is the measured value.

$\mu$ is the expected value.

$s = \frac{\sigma}{\sqrt{n}}$ is the standard deviation of the sample. $\sigma$ is the standard deviation of the population.

In this question:

The mean length was 2.9 inches, and the population standard deviation is 0.1 inch.

This means that $\mu = 2.9, \sigma = 0.1$

Random sample of 100 screws.

This means that n = 100.

To see if the batch of screws has a significantly different mean length from 3 inches, what would the value of the z-test statistic be?

3 inches, so $X = 3$

$s = \frac{0.1}{\sqrt{100}} = 0.01$

$z = \frac{X - \mu}{s}$

$z = \frac{3 - 2.9}{0.01}$

$z = 10$

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3 years ago

A tennis star was hired to sign autographs at a convention. She was paid $30003000 plus 22% of all admission fees collected at

defon

Answer: $28000 was collected at the door.

Step-by-step explanation:

Let x represent the total amount collected of admission feets collected at the door.

She was paid $3000 plus 2% of all admission fees collected at the door. This means that the total amount she was paid for collecting x admission fees at the door is expressed as

3000 + 2/100 × x

= 3000 + 0.02x

The total amount she received for the day was $3560. It means that

3000 + 0.02x = 3560

0.02x = 3560 - 3000

0.02x = 560

x = 560/0.02

x = 28000

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3 years ago