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adelina 88 [10]
3 years ago
5

You throw a snowball from a height of 12 feet with an upward velocity of 14 feet per second. The function h=−16t^2+14t+12 gives

the height h of the snowball after t seconds. When does the snowball hit the ground? Round your answer to the nearest tenth. (Two answers)
Mathematics
1 answer:
Brrunno [24]3 years ago
6 0

Answer:

t=1.4 and -0.5

t=7+sqrt241/16, 7-sqrt241/16

You might be interested in
(I) x²-8x = -16<br>(ii) x²+2x+1 = 0<br>(iii) 4x²-24x-36=0<br>Solve please...........​
algol13

(I)

Given equation is x²-8x = -16

⇛ x²-8x+16 = 0

⇛ x²-4x-4x+16 = 0

⇛ x(x-4)-4(x-4) = 0

⇛ (x-4)(x-4) = 0

⇛ x-4 = 0 or x-4 = 0

⇛ x = 4 or x = 4

(ii)

Given equation is x²+2x+1 = 0

⇛ x²+x+x+1 = 0

⇛ x(x+1)+1(x+1) = 0

⇛ (x+1)(x+1) = 0

⇛ x+1 = 0 or x+1 = 0

⇛ x = -1 or x = -1

(iii)

Given equation is 4x²-24x-36 = 0

⇛ 4(x²-6x-9) = 0

⇛ x²-6x-9 = 0

⇛ x²-2(x)(3) = 9

On adding 3² both sides then

⇛ x²-2(3)x)+3² = 9+9

⇛ (x-3)² = 18

⇛ (x-3) = ±√18

⇛ x-3 = ±√(2×9)

⇛ x-3 = ±3√2

⇛ x = 3±3√2

⇛ x = 3+3√2 or 3-3√2

5 0
2 years ago
Fr ee poi nts. dele ting my acco unt so here you go​
riadik2000 [5.3K]

Step-by-step explanation:

Thank you for the points BTW why are u deleting it

5 0
2 years ago
Read 2 more answers
Lesson 12 Ratios of Fractions and Their Unit Rates
slava [35]

Answer:

tttt5556689

Step-by-step explanation:

hehe

6 0
2 years ago
Read 2 more answers
Whats an irrational number between 7.7 and 7.9 ?
kati45 [8]
The irrational in between should be 7.8
6 0
2 years ago
Read 2 more answers
Use an algebraic approach to solve the problem.
qaws [65]

Answer:

Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

Step-by-step explanation:

Use the formula for the mean: sum of elements / number of elements

Let x represent her first exam score.

Her second exam score can be represented by x + 11, since it was 11 points better than her first.

Her third exam score can be represented by (x + 11) + 5, since it was 5 points better than her second.

Plug in all of these expressions into the mean formula. Plug in 87 as the mean, and plug in 3 as the number of elements (since there are 3 scores):

mean = sum of elements / number of elements

87 =  ( (x) + (x + 11) + (x + 11) + 5 ) / 3

Add like terms and solve for x:

87 = (3x + 27) / 3

261 = 3x + 27

234 = 3x

78 = x

So, her first score was a 78.

Find her second score by adding 11 to this:

78 + 11 = 89

Find her third score by adding 5 to the second score:

89 + 5 = 94

Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

6 0
2 years ago
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