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Elden [556K]
3 years ago
15

10 cm 3 cm I need help with this

Mathematics
1 answer:
kakasveta [241]3 years ago
4 0

Answer:

Step-by-step explanation:

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An object is dropped from a bridge and allowed to freefall to the ground. The height of the object over time can be modeled usin
ioda
The height at time t is
h(t) = 144 - 16t²

When t = 0, then h = 144.
Therefore the height from the ground is 144 when the object is dropped.

When the object reaches the ground, h = 0.
Therefore
144 - 16t² = 0
t² = 144/16 = 9
t = 3 s

Answer:
The object reaches the ground in 3 seconds.

4 0
2 years ago
Read 2 more answers
-5 >3 true or false plssssss answer
Ivan

Answer:

false

Step-by-step explanation:

-5 is smaller than 3 not bigger.

8 0
3 years ago
Lindsey purchased a random sample of 25 tomatoes at the farmers market. The 95% confidence interval
TiliK225 [7]

Answer:

3 & 5

Step-by-step explanation:

3 0
3 years ago
Which expressions simplify to a rational answer? Select each correct answer. 29√⋅4√ 3√⋅16−−√ 73⋅−√3√ 5√⋅5√
PolarNik [594]

Answer:

The correct options are 1, 3 and 4.

Step-by-step explanation:

We need to find the expressions whose simplified form is a rational number.

Rational number: If a number is defined in the form of p/q where p and q are integers and q≠0, then it is called a rational number.

For example: 0,2, 4.3 etc.

Irrational number: If a number can not defined in the form of p/q, where p and q are integers and q≠0, then it is called an irrational number.

First expression is

2\sqrt{9}\cdot \sqrt{4}=2(3)\cdot (2)\Rightarrow 6\cdot 2=12

12 is a rational number.

Second expression is

\sqrt{3}\cdot \sqrt{16}=\sqrt{3}\cdot 4\Rightarrow 4\sqrt{3}

4\sqrt{3} is an irrational number.

Third expression is

7\sqrt{3}\cdot \sqrt{3}\Rightarrow 7\cdot 3=21

21 is a rational number.

Fourth expression is

\sqrt{5}\cdot \sqrt{5}=5

5 is a rational number.

Therefore, the correct options are 1, 3 and 4.

4 0
3 years ago
Raul picks 20 flowers from his mother's garden. One fourth of them are purple. How many of the flowers are purple?
steposvetlana [31]
25% were purple and 30 percent another color
8 0
3 years ago
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