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
Lunna [17]
3 years ago
9

15 points!!!! Answer is needed in 5 minutes plz help

Mathematics
1 answer:
Archy [21]3 years ago
3 0
The radii of the circle increases by 7.5 cm each ring: 7.5 cm, 15.0 cm, 22.5 cm, and 30.0 cm.
The area if the red target is the area of the largest circle minus the second to the largest circle plus the area of the third largest circle minus the area of the smaller circle
A=pi(30.0)^2 - pi(22.5)^2 + pi(15.0)^2- pi(7.5)^2
A=900pi-506.25pi+225pi-56.25pi
A=562.5pi is approximately 1767 cm^2
You might be interested in
Forty five men can construct a road 210m long in 60 days. What length would be constructed by 72 men in 50 days assuming that al
blagie [28]

Answer:

280m

Step-by-step explanation:

Work rate would be (210m)/(45people)(60days)=7/90 m/(people)(day)

7/90 m/(people)(day) * 72people * 50days =280m

7 0
3 years ago
Brainliest pls help (dont have to show work)
Kitty [74]

Answer:

-2.35

Step-by-step explanation:

5 0
3 years ago
279 is 33 1/2 of what amount
ycow [4]

Answer:

33% of 279 is equivalent to multiplying them: 33% × 279.

Step-by-step explanation:

4 0
3 years ago
X - 3y = 6
iragen [17]

Answer:

9x - 2y = 0

Step-by-step explanation:

elimination method

3 0
4 years ago
Read 2 more answers
What is the ratio of the two values and what new value do they produce? $280 in 7m
3241004551 [841]

Answer:

The ratio between two values A and B is just the quotient between these two values:

ratio = A/B

a) $280 in 7m

Here the ratio is:

$280/7m = $40/m

This also can be read as:

$40 per meter.

b) 105 miles in 2 hours

Here the ratio is:

105mi/2h = 52.5 mi/h

This also can be read as:

52.5 miles per hour

c) $33 for 5lb

The ratio is:

$33/5lb = $6.6/lb

This can be read as:

$6.6 per pound.

d) 50 pages in 2 hours

the ratio is:

(50 pages)/2h = 25 pages/h

this can be read as:

25 pages per hour.

4 0
3 years ago
Other questions:
  • Stephanie has $50 to spend at the art store. She decides to spend $20 on paper write an inequality that describes how much more
    14·2 answers
  • Simplify the expression. Express your answer as a power. (5^8)^5​
    15·1 answer
  • After school, a student jogged from school to the library. it took the student 35 minutes to get to the library, where he spent
    15·1 answer
  • Really need help with math question.
    14·1 answer
  • 1) What is the square root of 81​
    14·1 answer
  • 9. Based on the patterns observed in Exercises 5–8, describe a general formula that can be used to find the number of permutatio
    11·1 answer
  • I need the answer and the work (it’s geometry)
    8·1 answer
  • Please help.<br> Is Algebra.
    15·2 answers
  • Y is in direct proportion to x. x = 25, y = 5. Find the value of y, if x = 9.​
    6·2 answers
  • Zara translates figure p to make figure q. If she translates figure q 4 units to right to make figure r where will figure r be l
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!