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
miskamm [114]
2 years ago
12

Find the area of a circle whose radius is 2.5cm

Mathematics
2 answers:
Marizza181 [45]2 years ago
6 0

Answer:

19.6349540849

Step-by-step explanation:

π × 2.5^2 = 19.6349540849

Marina CMI [18]2 years ago
4 0
2.5 squared is 6.25
pi multiplied by 6.25 is 19.6
The area of a circle whose radius is 19.6cm
You might be interested in
Is 40 a multiple of 8
Natasha2012 [34]
Yes because,
8×1 = 8
8×2 = 16
8×3 = 24
8×4 = 32
8×5 = 40

So 40 is a multiple of 8
4 0
3 years ago
a library has an average of 510 visitors on Sundays and 240 visitors on other days. The average number of visitors per day in a
serious [3.7K]

Answer:

285

Step-by-step explanation:

hi

personally this is how i would do this question but there are other ways.

i would start off by seeing how many sundays there are in the month (which is 5) then the number of other days which is 25. i'd then multiply 5 by 510 which is 2550. add that to 240 times 25 (which is 6000) and all of that together is 8550. divide that by the number of the days in the month (30) and then you'll get the daily avergae for the month

hope this helped:)

6 0
3 years ago
How do I calculate 5 percent of 60 using fractions
irinina [24]
60*5%=60*5/100=300/100=3
So the answer is 3
5 0
3 years ago
Read 2 more answers
Let ​f(x)equals=33xminus−​1, ​h(x)equals=startfraction 7 over x plus 5 endfraction 7 x+5 . find ​(hcircle◦​f)(66​).
Ronch [10]
\bf \begin{cases}
f(x)=3x-1\\
h(x)=\cfrac{7}{x+5}\\\\
(h\circ f)(x)=h(~~f(x)~~)
\end{cases}
\\\\\\
f(66)=3(66)-1\implies \boxed{f(66)=197}
\\\\\\
\stackrel{h(~~f(x)~~)}{h(~~f(66)~~)}\implies \stackrel{h(~~f(66)~~)}{h\left(~~\boxed{197}~~ \right)}=\cfrac{7}{\boxed{197}+5}\implies h\left(~~\boxed{197}~~ \right)=\cfrac{7}{202}
7 0
3 years ago
Use the discriminant to determine the number of solutions to the quadratic equation 3x^2+5x=-1
kari74 [83]

Answer:

Two real distinct solutions

Step-by-step explanation:

Hi there!

<u>Background of the Discriminant</u>

The discriminant b^2-4ac applies to quadratic equations when they are organised in standard form: ax^2+bx+c=0.

All quadratic equations can be solved with the quadratic formula: x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}.

When b^2-4ac is positive, it is possible to take its square root and end up with two real, distinct values of x.

When it is zero, we won't be taking the square root at all and we will end up with two real solutions that are equal, or just one solution.

When it is negative, it is impossible to take the square root and we will end up with two non-real solutions.

<u>Solving the Problem</u>

<u />3x^2+5x=-1<u />

We're given the above equation. It hasn't been organised completely in ax^2+bx+c=0, but we can change that by adding 1 to both sides to make the right side equal to 0:

3x^2+5x+1=0<u />

Now that we can identify the values of a, b and c, we can plug them into the discriminant:

D=b^2-4ac\\D=(5)^2-4(3)(1)\\D=25-4(3)(1)\\D=25-12\\D=13

Therefore, because the discriminant is positive, the equation has two real, distinct solutions.

I hope this helps!

4 0
3 years ago
Other questions:
  • Mrs.cha has $90 dollars. she spends 1/3 of the money on monday. she spends the remaining money equally over the next 3 days. How
    12·2 answers
  • Create an equivalent ratio tol5:2 by multiplying both sides<br> by 2. What is the equivalent ratio?
    10·1 answer
  • A path through the middle of a circular garden is 14 feet long. [a] What is the distance around the outside of this garden? [b]
    12·1 answer
  • What percentage is 40kg of 1tonne?
    5·1 answer
  • Sam works as a waiter in a restaurant. He earns $1,400 per month as a base salary, plus tips averaging 15% of the meals he serve
    8·1 answer
  • What expression can be written as 4 x (3 + 8)?
    15·2 answers
  • The population of Augusta, WI, had a population of 1253 in 2000. If the population increased by 3% each year, what would be the
    11·2 answers
  • 55.8 ÷ (-3.1) do i estimate
    5·1 answer
  • Please help!??!?!??!?!?!?!​
    12·2 answers
  • What is 5,729 + 2,729​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!