Can you help me with this question

Find th areas and circumference 5 cm 2 cm

mihalych1998 [28]

Answer:

The Area is 10cm, and the perimeter is 14cm

Step-by-step explanation:

Area:

a = w · l 5cm · 2cm =10cm

Perimeter:

p = 2(l+w) 2(5 + 2) = 14

7 0

2 years ago

Someone please help<br> Me algebra 2

Bumek [7]

Answer:

Table I fill-in: 1.404

Table II fill-in: 1.661 (instead of the 2 that's there)

Step-by-step explanation:

The functions shown in Table I and II are inverses of each other. This means that the x's for Table I are the y's in Table II. And the y's in Table I are the x's in Table II.

So look at Table II, there is a coordinate pair

(7, 1.404). Switch the x and y and you get (1.404,7) That's your answer to fill in on Table I.

5 0

3 years ago

A teacher wants to estimate the mean time (in minutes) that students take to go from one classroom to the next. His research ass

PilotLPTM [1.2K]

Answer:

a: We can't determine this from the given information

b: 98%

Step-by-step explanation:

For a:

n = 42

The confidence interval has equal time on each side of µ, so we can add the two end points and divide them by 2 to find the middle of the interaval:

7.4 + 8.6 = 16

16/2 = 8

Now subtract 7.4 from 8 to find the distance from the mean to the end of the interval

8 - 7.4 = 0.6

So the sample mean, plus the calculated error was 0.6 minutes.

We don't have a way of calculating the sample mean with the given information. We could only find the sample standard deviation and the variance.

For b:

We have:

E = 0.6

s = 1.606

n = 42

See attached photo for the calculation of this value

The value is 2.421.

Using a sample size of 42, our degrees of freedom are 41. Use the t-distribution chart to see which level of confidence has 2.421 under it.

The level of confidence is: 98%

We need 41 degrees of freedom, but the chart has only 40, then 45. We can see that 40 has 2.423, and the values go down as the degrees of freedom go up, so 41 will correlate to 2.421

6 0

4 years ago

Please help! i'm not really good at these, thank u sm if u help!

Archy [21]

Answer:

Correct: a, b, c, d, f, g, h, i, l

Incorrect: e, j, k

Step-by-step explanation:

a. -120=60(-2) {insert x and y into the equation and see if it works} Correct

b. 60 is being multiplied by hours, so it is the mph Correct

c. 60 is always the one being multiplied, so it's the constant Correct

d. 210=60(3.5) {insert 3.5 as x [cause hours] and see if it equals 210 [it does]} Correct

e. y is the dependent variable, and it represent miles driven Incorrect

f. Direct variation equation is y=kx {in the equation, k=60} Correct

g. x is the independent variable, and it represents the hours driven Correct

h. The x and the y are proportional Correct

i. y is the dependent variable, and it represent miles driven Correct

j. y is the dependent variable, and it represent miles driven Incorrect

k. Rise=y Run=x The first point would be (1,60) {rise=60 run=1} Incorrect

l. (0,0) is a solution, and it is also the y-intercept Correct

(hope this helps :P)

8 0

3 years ago

Kinesthetic leaner best learn in formation

valina [46]

Metacognition's best definition can be described as an awareness and understanding of one's own thought processes. Answer A is obviously the incorrect choice as it refers to English, not psychology. Answer choice B makes sense as those who understand their own thought processes may be good test takers. Answer choice C is about learning new things which I would say does not necessarily apply to understanding what you know. It is about new knowledge whereas metacognition is about old knowledge. The final answer choice, D, does not apply since metacognition is not a process, but an awareness. I would say that the most applicable answer choice is B.

Hope that helps!
May your pencils stay sharp.

7 0

3 years ago

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