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Kazeer [188]
3 years ago
7

I need the (rate of change____, so the rock is falling___meters per sec) (the initial value,the initial hight)

Mathematics
1 answer:
stepladder [879]3 years ago
5 0

Answer:

- 6 m/s

Step-by-step explanation:

The rate of change is a measure of the slope and can be calculated using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (2, 78) and (x₂, y₂ ) = (10, 30) ← 2 points on the line

m = \frac{30-78}{10-2} = \frac{-48}{8} = - 6

Rate of change is - 6 m/s

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Omg PLS SEND HELP i suck at math
Rina8888 [55]

Answer:

13/25

Step-by-step explanation:

13 = 8 circles + 5 hearts.

25 = all the shapes.

(It says not to simplify... so the answer is 13/25)

7 0
3 years ago
Read 2 more answers
If a sprinkler rotated 90˚, paused, and then rotated another 90˚, how many degrees
Yanka [14]

Answer:

180°

Step-by-step explanation:

Since a sprinkler rotates 90°, pauses,and then rotates another 90°

So, here total degrees be like

= 90° + 90°

= 180°

hence, The number of degrees did it rotate altogether should be considered as the 180 degrees.

3 0
2 years ago
Niall hikes 250.6 meters up a mountain. If he is 70% of the way up, how many meters tall is the mountain?
Wittaler [7]

Answer:

358

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

5 0
3 years ago
Does the sample provide strong evidence that the mean weight of the bags is lower than the 35.6 grams listed on the package? Gro
kirill115 [55]

Answer:

As probability of that happening is very small; Yes, 33.6 is less than 35.6 grams   because   it  provide strong evidence that the mean weight of the bags is lower than the 35.6 grams listed on the package.

Step-by-step explanation:

For a normal distribution Z-score

Z = \frac{X-\mu}{\sigma}

Given that :

the mean (\mu) = 35.6

standard deviation (\sigma) = 5.2

sample size (n) = 35

standard error: \sigma_x = \frac{\sigma}{\sqrt{n}}

\sigma_x = \frac{5.2}{\sqrt{35}}

\sigma_x = 0.879

The probability that a random sample of 35 bags has a mean weight of 33.6 grams or less is :

P(X<33.6)  = P(Z < - 2.28)

= 0.0114

Conclusion:

As probability of the happening is very small; Yes, 33.6 is less than 35.6 grams   because   it  provide strong evidence that the mean weight of the bags is lower than the 35.6 grams listed on the package.

7 0
4 years ago
if the ratio of the areas of 2 similar polygons is 32:50, what is the ration of the corresponding side lengths?
Lera25 [3.4K]
\bf \qquad \qquad \textit{ratio relations}&#10;\\\\&#10;\begin{array}{ccccllll}&#10;&Sides&Area&Volume\\&#10;&-----&-----&-----\\&#10;\cfrac{\textit{similar shape}}{\textit{similar shape}}&\cfrac{s}{s}&\cfrac{s^2}{s^2}&\cfrac{s^3}{s^3}&#10;\end{array} \\\\&#10;-----------------------------\\\\&#10;\cfrac{\textit{similar shape}}{\textit{similar shape}}\qquad \cfrac{s}{s}=\cfrac{\sqrt{s^2}}{\sqrt{s^2}}=\cfrac{\sqrt[3]{s^3}}{\sqrt[3]{s^3}}\\\\&#10;-------------------------------\\\\

\bf \cfrac{small}{large}\qquad \cfrac{s}{s}=\cfrac{\sqrt{s^2}}{\sqrt{s^2}}\implies \cfrac{s}{s}=\cfrac{\sqrt{32}}{\sqrt{50}}\implies \cfrac{s}{s}=\cfrac{\sqrt{16\cdot 2}}{\sqrt{25\cdot 2}}&#10;\\\\\\&#10;\cfrac{s}{s}=\cfrac{\sqrt{4^2\cdot 2}}{\sqrt{5^2\cdot 2}}\implies \cfrac{s}{s}=\cfrac{4\sqrt{2}}{5\sqrt{2}}\implies \cfrac{s}{s}=\cfrac{4}{5}
6 0
3 years ago
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