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Viktor [21]
2 years ago
5

we laid out strands of lights to decorate the school each strand was 12 feet long how many strands did we need if we needed at l

east 70 feet of lights
Mathematics
1 answer:
Sergeeva-Olga [200]2 years ago
7 0
6 strands
70/12=5.83
Because you can’t have .8 of a strand, you would need to round up to the next whole number (6)
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The sum of the first three terms of geometric sequence is 14. If the first term is 2, find the possible values of the sum of the
Irina18 [472]

Geometric series are in the form of

a +a*r +a*r^2+...

Where a is the first term and r is the common ratio .

And it is given that

2 +2*r +2*r^2=14

2r^2+2r-12=0

r^2 +r-6=0

(r+3)(r-2)=0

r=-3,2

So the first five terms are

2+2(-3)+2(-3)^2+2(-3)^3+2(-3)^4  or 2+2(2)+2(2)^2+2(2)^3+2(2)^4

= 2-6+18-54+162 or 2+4+8+16+32

= 122 or 62

4 0
2 years ago
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Gina has $175 with which to buy items at the bake sale at school. The graph shows the amount of money she has remaining and the
Triss [41]

Answer:

B

Step-by-step explanation:

You can delete options A and C, because there are multiple domains and ranges throughout the graph.

B or D?

Range - y axis

Domain - x axis

You can see that the x axis goes to 25 and y axis goes till 175.

Therefore the answer is B

Hope this helps you!

8 0
2 years ago
Sally left the city for vacation. Sara left 5 hours later going 58 mph faster to catch up.
tensa zangetsu [6.8K]

Answer:46.2

Step-by-step explanation:

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6 0
2 years ago
Larry is building a frame around a rectangular picture. He will need 42 inches of wood to do the entire frame. If the frame is 1
Anton [14]

The width would be 9 inches. Here's how I got the answer:

Double 12

Subtract from total

Take your difference and divide by two.

That will give you the width.

8 0
2 years ago
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c) Combine 2+3 to get 5. 100-(5x5) equals 100-25. 100-25 is 75. The answer is 75.

d) Combine 2+3 to get 5. Combine 1+4 to get 5, which is 25. The answer is 5.

g) Combine 4+6 to get 10. Combine 70+-6 to get 64. Take the root of 64, leaving you with 10-8. Combine 10 + -8 to get 2. The answer is 2.

h) Combine 5+4 to get 9. Take the root of 36, leaving you with 18 + 6.  Combine 18 + 6 to get 24. The answer is 24.


5. [15 + 22 + 53] divided by [12 + 18] = [90] divided by [30] = 3 ribbons each.

6. (4 x 12) + (6 x 8) = 96 total.

4 0
3 years ago
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