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3 years ago

Simplify each expression by combining like terms. 7a - 6 + 8a

Mathematics

1 answer:

anygoal [31]3 years ago

5 0

=7a - 6 + 8

=7a + 8a - 6 =15a - 6

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I don't understand???? I'll give the brainliest!!!!!

olasank [31]

Answer:

Option A is the correct option.

Step-by-step explanation:

${a}^{2} + {b}^{2} - 2ab \: \cos \: c \: = {c}^{2} \\ a = 4 \\ b = 5 \\ c = 2 \\ \\ 2ab \: cos \: c = {a}^{2} + {b}^{2} - {c}^{2} \\ \: \: \: \: \: \: \: \: = {(4)}^{2} + {(5)}^{2} - {(2)}^{2} \\ \: \: \: \: \: \: \: \: = 16 + 25 - 4 \\ \: \: \: \: \: \: = 41 - 4 \\ \: \: \: \: \: \: = 37$

Hope this helps...

Good luck on your assignment...

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3 years ago

What is the probability of rolling an odd number on a number cube and flipping a coin landing on tails?

yKpoI14uk [10]

Answer: 1/4

Step-by-step explanation: take the odds of the first event (1/2) and the odds of the second event (1/2) and multiply them together

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3 years ago

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The heart rate variability (HRV) of police officers was the subject of research published in a biology journal. HRV is defined

nexus9112 [7]

Step-by-step explanation:

Consider the provided information.

Part (A) We need to find the confidence coefficient.

The given value or percentage of probability is known as the confidence coefficient that the interval contains the parameter.

Hence, the confidence coefficient is 0.90

Part (B) Practical interpretation of both of the 99% confidence intervals.

It means that there is 99% confident that the mean of population HRV for officers diagnosed hypertension which lies between 6.9 and 122.9

There is 99% confident that the mean of population HRV for officers those are not hypertensive which lies between 144.2 and 184.9.

Part (C)

If you are saying 99% confident that means the 99% of the similarly generated confidence intervals will contain the true value of the population mean in repeated sampling.

Part (D)

If We want to reduce the width of each confidence interval, you need to use smaller confidence coefficient.

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3 years ago

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r-ruslan [8.4K]

Answer:

The answer is 33 years.

Step-by-step explanation:

10% of 3 is .3

Just move the decimal to the left.

.3 times 33=9.9

9.9~10

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3 years ago

If y = 7x – 5, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

Setler79 [48]

The third set, (0, -5) (2,9) (-3,-26)

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Simplify each expression by combining like terms. 7a - 6 + 8a ​

Simplify each expression by combining like terms. 7a - 6 + 8a