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Triss [41]
2 years ago
10

One number is eight more than twice another. if their difference is 25, what is the larger number? 17 42 35

Mathematics
1 answer:
Marina86 [1]2 years ago
6 0
X = 2y + 8
x - y = 25

2y + 8 - y = 25
y = 25 - 8
y = 17

x = 2y + 8
x = 2(17) + 8
x = 34 + 8
x = 42

the larger number (x) = 42...and the smaller number (y) = 17
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dangina [55]

Answer:

SEE BELOW IN BOLD.

Step-by-step explanation:

a.

h = -16t^2 + 50t

h = 20 t

When the height is the same:

-16t^2 + 50t = 20t

-16t^2  + 30t = 0

t(-16t + 30) = 0

t = 0 or  -16t + 30 = 0, so:

t = 0 or -30/-16 = 1.875

So the answer is 1.88 seconds to the nearest hundredth.

b.

For the ball

h = -16t^2 + 50t

Finding the derivative and equating to zero:

dh/dt = -32t + 50 = 0

t = -50/-32 = 1.563

Maximum height after 1.56 seconds to nearest hundredth

c.

When the ball hits the ground h = 0 so

-16t^2 + 50t = 0

-16t(t - 50/16)= 0

T = 3.13 SECONDS TO THE NEAREST HUNDERDTH

7 0
2 years ago
Lexi bought 1 2/5 of green grapes and 2 3/10 of red grapes. Grapes are 2.99 a pound.Did lexi spend more or less then $12?
Romashka-Z-Leto [24]
Less. If you multiple 1 2/5 by $2.99 you would get about $4.19. If you multiple 2 3/10 by $2.99 you would get about $6.88. If you add those together, you would get $11.07, which is less than $12.
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3 years ago
a student has a 73% of being let out of class late. if he leaves class late. if he leaves class late, there is a 23% chance that
Elza [17]

Answer:

16.79 %

Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
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spayn [35]
3x - 4 + x^2 - 1 + 2x^2 - 15
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I wasn't sure if you wanted me to solve for x, but I did anyways.
x ≈ 1.86, or -2.86

7 0
3 years ago
Three times a number plus five equal twenty
Bezzdna [24]
Let the number be x
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3 0
3 years ago
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