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irinina [24]
4 years ago
10

What was the rate of change between 65 and 75 Please help

Mathematics
1 answer:
Lorico [155]4 years ago
6 0

Answer:

15.38% percent increase

Step-by-step explanation:

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If an object is launched at an angle of 28° with an initial velocity of 133 ft./s from a height of 6 feet how many seconds will
Tema [17]

Answer:

Hence after  3.98 sec  i.e  4 sec Object will hit the ground  .

Step-by-step explanation:

Given:

Height= 6 feet

Angle =28 degrees.

V=133 ft/sec

To Find:

Time in seconds after which it will hit the ground?

Solution:

<em>This problem is related to projectile motion for objec</em>t

First calculate the Range for object  and it is given by ,

R=v^2Sin(2Ф)/g

Here R= range  g= acceleration due to gravity =9.8 m/sec^2

1m =3.2 feet

So 9.8 m, equals to 9.8 *3.2=31.36 ft

So g=31.36 ft/sec^2. and 2Ф=2(28)=56

R=133^2*Sin(56)/31.36

R=14664.84/31.36

R=467.62  fts

Now using Formula for time and range as

R=VxT

Vx is horizontal velocity

Vx=V*cosФ

Vx=133*cos(28)

Vx=117.43  ft/sec

So above equation becomes as ,

467.62=117.43*T

T=467.62/117.43

T=3.98 sec

T is approximately equals to 4 sec.

4 0
3 years ago
The answer and how you got it
mart [117]
The answer is 12
12-(5+3)=4
4+8=12
8 0
3 years ago
Please answer the problem below.<br><br> ~Thanks = )
RoseWind [281]

Hi GlaxyCraft4991,

Solution:

−12x − 0.4 > 0.2 (36.5x + 80) − 55

−12x − 0.4 > 7.3x − 39

−12x − 0.4 − 7.3x > 7.3x − 39 − 7.3x

−19.3x − 0.4 > −39

−19.3x − 0.4 + 0.4 > −39 + 0.4

−19.3x > −38.6

−19.3x/19.3 > −38.6/19.3

x < 2

Correct Answer:

x < 2

3 0
3 years ago
Which steps could be used to solve this story problem? Krissy had 32 bagels. She gave an equal number of bagels to each child. T
Elina [12.6K]
D, because it said that Krissy had equally distributed the bagels to each child, so 32/8=4, and then it asked how many bagels did the girls get all together, so it's 4x3=12
4 0
3 years ago
Read 2 more answers
Researchers wondered if there was a difference between males and females in regard to some common annoyances. They asked a rando
Zinaida [17]

Answer:

Step-by-step explanation:

Males proportion p_1 = \frac{163}{532} =0.3064

Females proportion p_2 = \frac{203}{589} =0.3447

H_0: p_1 = p_2\\H_a: p_1

(one tailed test for comparison of proportions)

Test statistic = \frac{p_1-p_2}{p(1-p)\sqrt{\frac{1}{n_1}+\frac{1}{n_2}  } }

=-1.3641

Here p= combined proportion = \frac{163+203}{532+589} \\=0.3291

p value = 0.0869

Since p >0.05, accept null hypothesis.

The evidence does not suggest a higher proportion of females are annoyed by this​ behavior

3 0
3 years ago
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