1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VARVARA [1.3K]
2 years ago
9

Pls help, this is due today

Mathematics
2 answers:
slava [35]2 years ago
3 0
What’s the question?
If it’s area then the formula is pi r^2
If it’s the circumference then the 2pi r or pi d
Bad White [126]2 years ago
3 0

(i’m using 3.14 as pi tell me if ur pi is different)

yellow: 28.26

blue: 18.84

green: 251.2

red: 15.7

purple: 21.98

formula: C = 2pi r | C = pi d

You might be interested in
How do you know the correct order in which to evaluate algebraic expressions?
GenaCL600 [577]
You should use PEMDAS. I
6 0
3 years ago
What is seen in the middle of March and April that can’t be seen at the beginning or end of either month?
Troyanec [42]

Answer:

That I have no idea what it is. sorry

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Why is 4 laps in 10 minutes and 6 laps in 15 minutes proportional
Shtirlitz [24]
If you break it down it goes to 2 laps every 5 minutes. So any set that follows this "pattern" would be proportional
3 0
3 years ago
The graph of y=x^2 -7x+ 12 is a parabola with x-intercepts at
vesna_86 [32]

Answer:

<h2>x = 3 and x = 4 → (3, 0) and (4, 0)</h2>

Step-by-step explanation:

\text{x-intercept is for y = 0}.\\\\\text{We have the function:}\ y=x^2-7x+12.\\\\\text{Put y = 0 and calculate the value(s) of x.}\\\\x^2-7x+12=0\\\\x^2-3x-4x+12=0\\\\x(x-3)-4(x-3)=0\\\\(x-3)(x-4)=0\iff x-3=0\ \vee\ x-4=0\\\\x-3=0\qquad\text{add 3 to both sides}\\\boxed{x=3}\\\\x-4=0\qquad\text{add 4 to both sides}\\\boxed{x=4}

6 0
3 years ago
How many students must be randomly selected to estimate the mean weekly earnings of students at one college? We want 95% confide
kari74 [83]

Answer:

The sample of students required to estimate the mean weekly earnings of students at one college is of size, 3458.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

CI=\bar x\pm z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

The margin of error of a (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

MOE=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

The information provided is:

<em>σ</em> = $60

<em>MOE</em> = $2

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

Compute the sample size as follows:

MOE=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

       n=[\frac{z_{\alpha/2}\times \sigma }{MOE}]^{2}

          =[\frac{1.96\times 60}{2}]^{2}

          =3457.44\\\approx 3458

Thus, the sample of students required to estimate the mean weekly earnings of students at one college is of size, 3458.

8 0
3 years ago
Other questions:
  • 12 is 75% of what number?
    9·1 answer
  • Evaluate the expression when: A=2, B=1, C=4<br> A+6/CB
    9·2 answers
  • What is the result of subtracting the second equation from the first?
    5·2 answers
  • A local restaurant allows groups to rent out a party room in order to host events. The restaurant charges $600 to rent the room
    5·2 answers
  • Plz help bro I’ve asked this so many times
    15·1 answer
  • What is the area of a square with an 8 yd side length?
    6·2 answers
  • What is tariffwhat is tariff ​
    15·1 answer
  • Please and thank you help me
    8·1 answer
  • PLS PLS PLS HELP 100 POINTS no scamming
    12·2 answers
  • What is (1,3) rotated in 180 degrees?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!