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3 years ago

PLS HELP I DONT UNDERSTND THIS

Mathematics

1 answer:

emmasim [6.3K]3 years ago

5 0

Answer: a. 6 b. 48

Step-by-step explanation:

A. 2 to the first is just 2 once so 3x2=6

B. 2 to the fourth is 2 four times 2x2x2x2=16, 3x16=48.

You might be interested in

The length of the famed fred's fence is 5 more than twice it's width if the perimeter of the fence is 510 feet find the dimensio

Sveta_85 [38]

Answer:

83 1/3 ft wide
171 2/3 ft long

Step-by-step explanation:

Let w represent the width of the area. Then 2w+5 represents the length. The perimeter is twice the sum of length and width:

P = 2(L+W)

510 = 2(2w+5 +w) . . substitute given values

255 = 3w +5 . . . . . . divide by 2

250 = 3w . . . . . . . . . subtract 5

83 1/3 = w . . . . . . . . .divide by 3; the width of the area

2w+5 = 171 2/3 . . . . the length of the area

The fenced area is 83 1/3 ft wide and 171 2/3 ft long.

4 0

4 years ago

can anyone help me out here? I will pay you 20 points

Cerrena [4.2K]

Answer:

The ordered pair that makes an equation true is called a solution

a)solution

b) not a solution

c) solution

d) solution

e)not a solution

f) not a solution

g) solution

h) not a solution

Step-by-step explanation:

The first number in an ordered pair is x, the second one is y

Plug in the numbers to x and y respectively

I'll give two examples so you know how to solve it

a) y=3x+1

-5=3(-2)+1

make sure you use pemdas (multiply first)

-5=-6+1

add

-5=-5

this is true (meaning it is a solution)

b) 6=3(-3) +1

6=-9+1

6 = -8

this is NOT true (not a solution)

If you have any questions feel free to ask

8 0

3 years ago

the graph shows rate at which an oven preheats when turned on. what is the unit rate and what does it represent?

zvonat [6]

Answer:

Step-by-step explanation:

i dont know

4 0

4 years ago

Read 2 more answers

cheryis softball batting average in 0.340 and karins is 0.304 kartin says they have the same avarge what error did she make expl

Anni [7]

She made an error , 0.340 is bigger because of the ones and tens place being switched

7 0

3 years ago

An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was x = 119.6 ounc

Evgen [1.6K]

Answer:

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\mu_{\bar X}= \mu = 119.6$

And now for the deviation we have this:

$SE_{\bar X} = \frac{6.5}{\sqrt{25}}=1.3$

So then the correct answer for this caee would be:

c. 1.30 ounces.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Solution to the problem

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\mu_{\bar X}= \mu = 119.6$

And now for the deviation we have this:

$SE_{\bar X} = \frac{6.5}{\sqrt{25}}=1.3$

So then the correct answer for this caee would be:

c. 1.30 ounces.

6 0

3 years ago