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
Delicious77 [7]
3 years ago
7

Please help me just a and d

Mathematics
2 answers:
Softa [21]3 years ago
8 0

C = 2 x pi x r

if r = 5 cm

C = 2 x pi x 5 = 10 x pi

≈ 10 x 3,14 ≈ 31,4 cm

C = 2 x pi x r = pi x d

if d = 2 m

C = pi x 2

≈ 3,14 x 2 ≈ 6,28 m

Crank3 years ago
7 0

Hello!

a)

C  = 2πr                     C= 2*π     *5                     31,4cm    

                                   =  2*3,14* 5

d)

r =2/2 => 1m

C=  2πr                   C= 2*π*1                             6,28m

                               =  2 *3,14*1                      

You might be interested in
If $4,000,000 is invested at 5% interest compounded continuously, how much
denis23 [38]

Answer:$13,925,161.81

Step-by-step explanation:

A=P(1+r/n)^nt

A=amount

P=Principal

R =rate in decimal

T=time

N=number of times compounded at period t

A=4000000(1+0.05/12)^12×25

=4000000(1.0041666)^300

=4000000(3.4812835183479)

=$13,925,161.81

4 0
3 years ago
2 1/4x + (4 1/3x − 7 4/5 ) ÷ 2 3/5
o-na [289]

Answer:

1/4*(9x+130x-234/35

Step-by-step explanation:

get photomath

4 0
3 years ago
Find the x- and y-intercept of the line. -7/5x - 4y = 7 −75x − 4y = 7
Alexandra [31]
To find the x-intercept, substitute in <span>00</span> for <span>yy</span> and solve for <span>xx</span>.<span><span><span>(0)</span>=7x−5</span><span><span>(0)</span>=7x-5</span></span>Rewrite the equation as <span><span>7x−5=0</span><span>7x-5=0</span></span>.<span><span>7x−5=0</span><span>7x-5=0</span></span>Since <span><span>−5</span><span>-5</span></span> does not contain the variable to solve for, move it to the right side of the equation by adding <span>55</span> to both sides.<span><span>7x=5</span><span>7x=5</span></span>Divide each term by <span>77</span> and simplify.
<span><span>x=<span>57</span></span><span>x=<span>57</span></span></span>To find the y-intercept, substitute in <span>00</span> for <span>xx</span> and solve for <span>yy</span>.<span><span>y=7<span>(0)</span>−5</span><span>y=7<span>(0)</span>-5</span></span>Solve the equation.
<span><span>y=−5</span><span>y=-5</span></span>These are the <span>xx</span> and <span>yy</span> intercepts of the equation <span><span>y=7x−5</span><span>y=7x-5</span></span>.x-intercept: <span><span>(<span>57</span>,0)</span><span>(<span>57</span>,0)</span></span>y-intercept: <span>(0,−5<span>)</span></span>
8 0
3 years ago
Read 2 more answers
If the diver in item 2 leaves the board with an initial upward speed of 2.00 m/s, find the diver's speed when striking the water
Taya2010 [7]

Answer:

v_f=9.0774m/s

Step-by-step explanation:

Let's assume

initial velocity =vi

final velocity=vf

initial height =hi

final height =hf

acceleration due to gravity =g

we can use formula

\frac{1}{2}v_i^2+gh_i= \frac{1}{2}v_f^2+gh_f

we are given

v_i=2m/s

h_i=2\times 2=4

h_f=0

g=9.8m/s^2

now, we can plug values

\frac{1}{2}(2)^2+(9.8)(4)= \frac{1}{2}v_f^2+(9.8)(0)

now, we can solve for vf

\frac{1}{2}(2)^2+(9.8)(4)= \frac{1}{2}v_f^2

we get

v_f=9.0774m/s


4 0
3 years ago
Solve for x.<br> X2 - 20x+ 100 = 0
lianna [129]

Answer:

X will equal 10 x=10

Step-by-step explanation:

First subtract 100 from both sides to get x^2-20x=-100 then find c. (-b/2)^2 is the formula. then c=100 so add 100 to both sides. x^2-20x+100=200. Then Factor. (x-10)^2=0 is what you should get. then do square root. x-10=0. So now add 10 to both sides and you get x=10. Tada!

8 0
2 years ago
Other questions:
  • According to a recent​ study, 9.3​% of high school dropouts are​ 16- to​ 17-year-olds. In​ addition, 6.3​% of high school dropou
    13·1 answer
  • What steps would you do to solve n/7 + 3 ≥ -4? Multiply by seven, then subtract three. Add three, then multiply by seven. Subtra
    13·1 answer
  • You have won the lottery and will receive 20 annual payments of $10,000 starting today. If you can invest these payments at 8.5%
    8·1 answer
  • $280 $290 $560 $580.
    13·2 answers
  • What is the value of x?<br><br> 3 • (–4) • x = 0<br><br> x =
    11·2 answers
  • Function of a Function
    5·1 answer
  • Given a wavelength of 121,270 millimeters, what is the wavelength in kilometers?
    5·1 answer
  • Need help ASAP for my homework assignment!! If you answer right Ill mark you Brainliest!!​
    11·2 answers
  • The temperature fell 3.25 degrees every hour. Find the change in temperature after 5 hours
    13·1 answer
  • Determine the type(s) of the triangle with the given coordinates. X(6,1) Y(-2,-3) Z(0,3)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!