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eduard
3 years ago
13

Mrs.Gilbert timed her fastest student running down the hallway. Her student ran from one end to the hall to the other in 10% of

minute. How many seconds did it take the student to run down the hallway?
Mathematics
1 answer:
ad-work [718]3 years ago
4 0
She ran in 54 seconds.
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What is the markdown from $90 to $75?
love history [14]

Answer:

$15.

Step-by-step explanation:

90-75=15, which is the difference between the two. Hope this helps.

5 0
3 years ago
The answer please I need the answers
enyata [817]

Answer:

I think you need to multiply 12 and 7 and then cut that in half

7 0
3 years ago
find the volume of a solid that is generated by rotating around the indicated axis the plane region bounded by the giveb curves:
Fofino [41]
Assuming the area below the line y=0 (i.e. x>1) does NOT count, the area to be rotated is shown in the graph attached.

A. Again, using Pappus's theorem,
Area, A = (2/3)*1*(1-(-1))=4/3  (2/3 of the enclosing rectangle, or you can integrate)
Distance of centroid from axis of rotation, R = (2-0) = 2
Volume = 2 π RA = 2 π 2 * 4/3 = 16 π / 3 (approximately = 16.76 units)

B. By integration, using the washer method
Volume = 2\pi\int_{-1}^1(1-x^2)(2-x)dx
=2\pi\int_{-1}^1(x^3-2x^2-x+2)dx
=2\pi[x^4/4-2x^3/3-x^2/2+2x]_{-1}^{1}
=2\pi([1/4-2/3-1/2+2]-[1/4+2/3-1/2-2])
=2\pi(8/3)
= 16 π /3   as before



3 0
3 years ago
The perimeter of a square is 24.46 inches. What is the side length of the square?
Elina [12.6K]
A≈6.12in
I hope this helps!!!

7 0
3 years ago
Read 2 more answers
*If 3 + 4(2x - 1) = 23, then 2x - 2 equals: *​<br><br>2<br><br>4<br><br>6<br><br>8
Anarel [89]

Answer:

4

Step-by-step explanation:

3 + 4(2x - 1) = 23

4(2x - 1) = 20

8x - 4 = 20

8x = 24

x = 3

---------

2(3) - 2

6 - 2

4

7 0
3 years ago
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