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2 years ago

Please answer 7 and 8 for mark as brainliest

Mathematics

1 answer:

maria [59]2 years ago

8 0

7) A. A variable is an unknown value, and x is unknown. Constants are known values so they cannot have X in it.

8)A again for the same reason as number 7

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Five friends split a $65.20 bill at a restaurant . They also each left $2.75 for the tip. How much money did each person pay in

kvv77 [185]

You start by doing 65.20 (the bill) divided by 5 (the amount of people paying)
65.20 / 5 = 13.04

Then you add 13.04 (how much each person paid towards the bill) and 2.75 (the amount of money each person left as a tip)
13.04 + 2.75 = 15.79

Each person paid $15.79

4 0

2 years ago

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How do i solve for x?

kirza4 [7]

Answer:

x = 6

Step-by-step explanation:

We can see that the the 32 degree angle plus the equation (9x + 4) is equal to 90 degrees.

We know this because the bottom line is a 180 degree angle, and we can see on the other side that it is a right angle.

If we were to turn that into an equation it would like like this:

(9x + 4) + 32 = 90

Now you just have to solve for x.

9x + 4 + 32 = 90

Combine like terms:

9x + 36 = 90

Subtract 36 from both sides

9x = 54

divide both sides by 9

x = 6

and you are left with the answer.

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2 years ago

4+3(15-2^(3)) Simplify the equation....

miskamm [114]

Answer:

Step-by-step explanation:

$4+3\left(15-2^3\right)\\\\3\left(15-2^3\right)=21\\\\=4+21\\\\=25$

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2 years ago

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A population of values his normal distribution with men equal to 27.6 and standard deviation equal 39.4 do you intend to draw a

Alecsey [184]

Answer:

The mean of the distribution of sample means is 27.6

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 27.6

Standard Deviation, σ = 39.4

We are given that the population is a bell shaped distribution that is a normal distribution.

Sample size, n = 173.

We have to find the mean of the distribution of sample means.

Central Limit theorem:

It states that the distribution of the sample means approximate the normal distribution as the sample size increases.
The mean of all samples from the same population will be approximately equal to the mean of the population.

Thus, we can write:

$\mu_{\bar{x}} = \mu = 27.6$

Thus, the mean of the distribution of sample means is 27.6

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2 years ago

Which is more? 15 inches or 1 foot

zubka84 [21]

1 ft = 12 inches

therefore, 15 inches is more then 1 ft

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2 years ago

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