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vlabodo [156]
2 years ago
11

Please answer this :)

Mathematics
2 answers:
Elan Coil [88]2 years ago
4 0

7 : -5, -3, -1, 2, 4

8 : -20, -10, 5, 10, 15

soldi70 [24.7K]2 years ago
4 0
7:-5,-3,-1,2,4
8: -20 , -10 , 5 , 10 , 15
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At the beginning of the year, Zachary had $40 in savings and saved an additional $20 each week thereafter. Isaac started the yea
guajiro [1.7K]

Zachary function:

Z(t) = 40 + 20t

Isaac function:

I(t) = 85 + 11t

Graph each function to see the interval of time when one person has more money than the other.

8 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
1. The Royals softball team played 125 games and won 60 of them. What percent of the games did they lose? A. 48% B. 52% C. 65% D
Sauron [17]

Answer:

52% or B.

Step-by-step explanation:

3 0
3 years ago
14% of the number is 63 <br> Find the number
Lady_Fox [76]

Answer:

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Step-by-step explanation:


3 0
3 years ago
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Willow has a recipe that asks her to use 3/4 cup of sugar. She is going to make 1/2 of the recipe, so she only needs 1/2 of that
Novosadov [1.4K]

Answer:

3/8ths cup

Step-by-step explanation:

take 3/4 and times that by 2 then you get 6/8th and then take half of the 6 out and get 3/8th

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3 years ago
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