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Artyom0805 [142]
3 years ago
6

A circle has a radius of 30 cm.

Mathematics
2 answers:
Papessa [141]3 years ago
6 0

Answer: the area of the circle is 2827.43cm²

Step-by-step explanation:

topjm [15]3 years ago
4 0
It would be 60 because all you do is double the radius because it is only half of the circle
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Find the area of the region under the graph of the function f on the interval
vlada-n [284]

Answer:

9/2

Step-by-step explanation:

this is a simple integral function

given limits of interval [a,b] of a continuous function f(t), you can find the area under the curve by using:

\int\limits^a_b {f(t)} \, dt

\int\limits^3_0 {3x-x^2} \, dx

using the fundamental theorem of calculus that states the integral of f(x) in the interval [a,b] is  = g(a)-g(b), where g(x) is the antiderivative of f(x)

our g(x) = \frac32x^2-\frac13x^3

g(3)-g(0) = g(3) = 27/2 - 27/3 = 27/2-9 = 9/2

8 0
3 years ago
What is −n+(−4)−(−4n)+6
luda_lava [24]

Answer:

3n + 2

Step-by-step explanation:

3 0
3 years ago
Please help me out !! ( I will mark brainliest)
lisov135 [29]

Question 1: The y-intercept is where the line crosses the y-axis. The increments of the y-axis is by 20, and the y-intercept is at (0, 20).

The slope is the change in y over the change in x. Find two points:

(0, 20) and (2, 80)

Now:

(80 - 20)/(2 - 0) = 60/2 = 30

Slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

So:

y = 30x + 20

Question 2: Again, look for the y-intercept, which is pretty clear. It's (0, 60).

Now find two points:

(0, 60) and (2, 40)

Find the slope:

(40 - 60)/(2 - 0) = -20/2 = -10

So, the equation is:

y = -10x + 60

And, there you go!

3 0
3 years ago
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Korvikt [17]

Answer:

210 ÷7 = 30

Step-by-step explanation:

We can round the numbers to numbers that make the math easier

I will round 208 to 210

We know 21 divide by 7 is 3

210 ÷7 = 30

This is very close to the actual answer.

208÷7 = 29.71428571........

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3 years ago
Does anyone know how to do 15 and 16?????
Julli [10]
This is how you answer number 15 and 16

3 0
3 years ago
Read 2 more answers
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