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
Ira Lisetskai [31]
3 years ago
15

Why dA = r dr d(theta)?

Mathematics
1 answer:
Serjik [45]3 years ago
8 0
For dA in  a circle, the r  value varies ,  but its area is still rdrd(theta) but r (and theta) differs depending where the region is
and the regions could be any regions as long as it is a continuous region

hope this helps
 
You might be interested in
A train travels at 47 miles per hour. Which equation
garri49 [273]

Answer:

d

Step-by-step explanation:

I think its d but I'm not quite sure

8 0
3 years ago
A house has increased in value by 15% since it was purchased. If the current value is $391,000, what was the value when it was p
Reika [66]
332,350
You do 391,000 - 15%
5 0
3 years ago
A survey of households in a small town showed that in 500 of 1,200 sampled households, at least one member attended a town meeti
andre [41]

Answer:

idk

Step-by-step explanation:

4 0
3 years ago
Two different families pay for entry into a water park.
icang [17]

Answer:

Adult ticket: $7

Child ticket: $2

Step-by-step explanation:

Set up a system of equations where a represents the cost of one adult ticket and c is the cost of one child ticket:

2a + 3c = 20

a + 4c = 15

Solve by elimination by multiplying the bottom equation by -2:

2a + 3c = 20

-2a -8c = -30

Add them together:

-5c = -10

c = 2

Now, we can plug in 2 as c to find the value of a:

2a + 3c = 20

2a + 3(2) = 20

2a + 6 = 20

2a = 14

a = 7

6 0
4 years ago
The height, h, in meters above the ground, of a projectile at any time, t, in seconds, after the launch is defined by the functi
Ivanshal [37]
The equation h(t) =-6t^2 + 15t + 2 <span>sets the parabola. You can find the parabola vertex as:
</span>
t_v= \frac{-b}{2a} =- \frac{15}{2\cdot (-6)} = \frac{15}{12}= \frac{5}{4}=1.25

then 

h( \frac{5}{4} )=-6\cdot  (\frac{5}{4} )^2+15\cdot \frac{5}{4} +2= \frac{91}{8} =11.375

This means that the maximum height is 11.375 m and <span>a projectilereaches this height at 1.25 seconds.</span><span /><span>
</span><span>
</span><span>The projectile initially launched at time t=0, so the initial height is h(0)=2 m</span>


6 0
4 years ago
Other questions:
  • What is 29.5 multiplied 2.6
    5·2 answers
  • Vin says that in the number 4,346, one 4 is 10 Times as great as the other 4. Is he correct
    10·2 answers
  • At the grocery store, an 8-inch cherry pie costs $4.39 and a similar 10-inch cherry pie cost $6.15. which is the better deal?
    10·1 answer
  • Jimmy spent 55 minutes on solving 11 math questions. If it took him the same amount of time to solve each question how long woul
    9·2 answers
  • Help with picture ??
    15·1 answer
  • What is the volume of this rectangular prism 3ft 6/1/4 14ft
    8·2 answers
  • The value of a share of IBM stock on that day was $70.00 more than the value of a share of A
    5·1 answer
  • Debra wants to net $100,000 on her house. Her closing costs will be 15,000 plus a 6% commission. She owes $310,000 on her loan.
    6·1 answer
  • What type of error, if any, occurs in the following deduction?
    10·1 answer
  • The graph shows f(x) and its transformation g(x).<br><br><br>Enter the equation for g(x) in the box.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!