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3 years ago

Please help fast need to get this and 6 more done

Mathematics

1 answer:

lara [203]3 years ago

3 0

Answer:

B = 4×4×ㅈ

l = 5 cm

SA= 4×5×ㅈ + 16 ㅈ

SA = 36 ㅈ

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computing definite integral by appealing to geometric formulas Graph the following definite integral then find the exact area of

sergiy2304 [10]

First integral

Since $f(x)=3x+1$ is a linear function, its graph is a line. This means that you can decompose the area under its graph as the sum of a right triangle and a rectangle, as shown in the attached image.

All the dimensions are fairly easy to deduce: we have

$AC = 2,\ CB=6$

So, the area of the triangle is

$A_t = \dfrac{2\times 6}{2}=6$

For the rectangle, we have

$A_r = AC\times CE = 2\times 4=8$

So, the total area is $6+8=14$

Second integral

We have

$y = \sqrt{1-x^2} \implies y^2=1-x^2 \implies x^2+y^2=1$

So, this function is the upper half of the unit circle (the two halves are the functions $y=\pm\sqrt{1-x^2}$ )

Since the area of the unit circle is $\pi$ , the value of the integral is $\frac{\pi}{2}$

Third integral

It follows the exact same logic as the first one, you only have to adjust the numbers.

4 0

3 years ago

Do these side lengths make a right triangle? 3, 4, 5. Will try to give a brainliest!

Sever21 [200]

Answer:

yes

Step-by-step explanation:

any triangle with a 3:4:5 ratio will be a right triangle

3 0

4 years ago

Which is the solution set for 2n-7<25

suter [353]

2n < 25 + 7
2n < 32
n < 32/2

Answer: Since thirty-two divided by two equals sixteen we add that with n and we get our answer which is n < 16

8 0

3 years ago

I need help with number 4 please you don't need to explain

inn [45]

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3 years ago

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Roman55 [17]

I think it is C. Let me know if it is correct

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