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Brilliant_brown [7]
3 years ago
14

The Grand Canyon is approximately 29 kilometers long. Mariner Valley is a canyon on Mars that is approximately 212 kilometers lo

ng. About how many times longer is Mariner Valley than the Grand Canyon?
Mathematics
1 answer:
mixer [17]3 years ago
4 0
7.3 times bigger than the grand canyon
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Find the x-coordinate of the vertex of a parabola if the x-intercepts are (3,0) and<br> (-9,0)
madam [21]

Answer:

x = -3

Step-by-step explanation:

The vertex lies on the axis of symmetry, whose x-coordinate is halfway between -9 and 3:  x = -3

8 0
3 years ago
What number lies between 7x8/10=
zzz [600]
The number that lies between that is 7
3 0
3 years ago
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How do you do this question?
Andrei [34K]

Answer:

Solution : Option B, or 9π

Step-by-step explanation:

We are given that y = x, x = 3, and y = 0.

Now assume we have a circle that models the given information. The radius will be x, so to determine the area of that circle we have πx². And knowing that x = 3 and y = 0, we have the following integral:

\int _0^3

So our set up for solving this problem, would be such:

\int _0^3x^2\pi \:

By solving this integral we receive our solution:

\int _0^3x^2\pi dx,\\\mathrm{Take\:the\:constant\:out}:\quad \int a\cdot f\left(x\right)dx=a\cdot \int f\left(x\right)dx\\=> \pi \cdot \int _0^3x^2dx\\\mathrm{Apply\:the\:Power\:Rule}:\quad \int x^adx=\frac{x^{a+1}}{a+1}\\=> \pi \left[\frac{x^{2+1}}{2+1}\right]^3_0\\=> \pi \left[\frac{x^3}{3}\right]^3_0\\\mathrm{Compute\:the\:boundaries}: \left[\frac{x^3}{3}\right]^3_0=9\\\mathrm{Substitute:9\pi }

As you can tell our solution is option b, 9π. Hope that helps!

5 0
3 years ago
Read 2 more answers
Will give brainliest to the one who gets it right and helps the most!
VARVARA [1.3K]

4. b) 30

5. c) y=2/3x+9

6. y=2x-5

7 0
3 years ago
The ratio of the perimeters of two rectangles is 4 to 7. The perimeter of the larger rectangle is 42 inches. What is the perimet
Lelu [443]

P = 42(4/7)

p = (42)(4)/(1)(7)

p= 168/7

p= 24 inches

Answer : D , 24 inches


I hope that's help !


6 0
4 years ago
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