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ahrayia [7]
3 years ago
6

A chestnut falls from a tree 45 feet above ground.Use the vertical motion model to find how long it takes to hit the ground.Roun

d your answer to the nearest tenth.
Mathematics
1 answer:
miv72 [106K]3 years ago
3 0
Ok so please check if im wrong its 25
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Birth weights in the United States are normally distributed with a mean of 3420 g and a standard deviation of 495 g. The Newport
s344n2d4d5 [400]

Answer:

P(2450

And we can find this probability with this difference:

P(-1.96

If we use the normal standard table or excel we got:

P(-1.96

And that represent 95% of the data. so then the percentage below 2450 is 2.5% and above 4390 is 2.5 %

Step-by-step explanation:

Let X the random variable that represent the birth weights of a population, and for this case we know the distribution for X is given by:

X \sim N(3420,495)  

Where \mu=3420 and \sigma=495

We are interested on this probability

P(2450

And we can use the z score formula given byÑ

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(2450

And we can find this probability with this difference:

P(-1.96

If we use the normal standard table or excel we got:

P(-1.96

And that represent 95% of the data. so then the percentage below 2450 is 2.5% and above 4390 is 2.5 %

6 0
3 years ago
8x – 3 = -19<br><br>Who give it fast they have branliest <br>Give the correct answer step by step​
lakkis [162]

Answer:

<h2>x= -2</h2>

Step-by-step explanation:

8x - 3 =  - 19

Collect like terms and simplify

8x =  - 19 + 3 \\ 8x =  - 16

Divide both sides of the equation by 8

\frac{8x}{8}  =  \frac{ - 16}{8}

Simplify

x =  - 2

4 0
3 years ago
Read 2 more answers
Bettina is measuring the food for her farm animals. She has 265 grams of corn, 500 grams of hay, and 495 grams of oats. What is
Mrac [35]

Answer

260 kilograms

Step-by-step explanation:

the correct answer is 260 kg

6 0
3 years ago
According to the histogram above, how many people weigh between 150 and
Inga [223]

Answer: C. 14

3 people weigh between 150-159

4 people wiegh between 160-169

7 people wiegh between 170-179

5 0
3 years ago
Place a set of parentheses in the expression so that its value is 33. 48-5+2x3+6
Xelga [282]
The parentheses must be placed here <span>48 - (5 + 2) * 3 + 6 in order for the equation to equal 33. </span>

4 0
3 years ago
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