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ad-work [718]
3 years ago
5

Colin bought a postcard for 45 cents . he gave the cashier $1 how much change did he receive

Mathematics
1 answer:
azamat3 years ago
3 0

Answer: $.55

Step-by-step explanation:

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A rectangle has a length 3 times the width. What is the perimeter in terms of x?
Marina CMI [18]

Answer:

Perimeter is equal to all four sides added together.

Length = 3W; L=3W

So

P = 2(W) + 2(L)  substitute the equation for length above you get

P = 2(W) + 2(3W)  and combine

P = 2W + 6W = 8W; put in what the perimeter is and solve for W

66 = 8W, so W = 8.25

W = 8.25, L = 24.75

7 0
3 years ago
Scoring a hole-in-one is the greatest shot a golfer can make. Once 5 professional golfers each made holes-in-one on the 7th hole
adell [148]
A) Probability  that at least one of these golfers makes a hole in one on the 10th hole at the same tournament is 

<span>=1−(<span>2493/2494</span><span>)^<span>5
=1-(0.99)^5
= 1- 0.96
=0.4

b) T</span></span></span><span>he probability that all of these golfers make a hole-in-one on the 10th hole at the same tournament
=</span>(<span>1/2494</span><span>)<span>5
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which is nearly zero.
5 0
4 years ago
if a toy rocket is launced vertically upward from ground level with an inital velocity of 128 feet per second, then its high h,
makkiz [27]
The toy rocket hits the ground when h(t) = 0.
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Solving the equation,
-9t^2 = -81
Dividing by -9
t^2 = 9
Taking the square root.
t = 3

The answer is 3 seconds.
7 0
4 years ago
Logan wants to move to the city
Usimov [2.4K]

Answer:good for him

Step-by-step explanation:

7 0
3 years ago
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Leo, Donnie, and micheal decide to order some pizzas. Leo pays for 1/4 of the order and Donnie and micheal paid the rest in the
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Answer:

45

Step-by-step explanation:

5 0
3 years ago
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