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3 years ago

HELPPP WITH MATH HOMEWORKKKK PLSSSS

Mathematics

2 answers:

Delicious77 [7]3 years ago

5 0

Answer:

b, d, e

Step-by-step explanation:

Kamila [148]3 years ago

5 0

Answer:

B, D, E

Read explanation... it always helps...

Step-by-step explanation:

alrighty, we know that anything positive multiplied by anything negative results in a negative number....

with that said.... b, d, and e are the only answer choices that result in a negative number that matches the expression -5/19

i hope this helps!!!

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3 years ago

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kumpel [21]

Answer:

About 4.1323 meters.

Step-by-step explanation:

We can use the following kinematic equations:

$\displaystyle v_f = v_0 + at \text{ and } \Delta d = v_0 t + \frac{1}{2} at^2$

We want to determine the distance the object has dropped after falling from rest and reaching an instantenous speed of 9 m/s.

We are given that the acceleration due to gravity is 9.8 m/s².

Using this fact and the first equation, find the time for which it took the object to reach 9 m/s. Note that the initial velocity is 0 m/s since the object started from rest.

$\displaystyle \begin{aligned} v_f = v_0 + at \\ \\ (9\text{ m/s}) & = (0\text{ m/s}) + (9.8\text{ m/s$^2$})t \\ \\ 9\text{ m/s} & = (9.8 \text{ m/s$^2$})t \\ \\ t &\approx0.9184 \text{ s} \end{aligned}$

To find how far the object dropped, we can use the second equation:

$\displaystyle\begin{aligned} \Delta d & = v_0 t + \frac{1}{2} at^2 \\ \\ & = (0\text{ m/s})(0.9184 \text{ s}) + \frac{1}{2}(9.8 \text{ m/s$^2$})(0.9184 \text{ s})^2 \\ \\ & = 4.1323 \text{ m} \end{aligned}$

In conclusion, the object would have dropped about 4.1323 meters.

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3 years ago

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aleksandr82 [10.1K]

Answer:

School X: 8 points School Y: 2.6̅ or 6 repeating.

Step-by-step explanation:

When you know that School X has 8 points, and School Y has 3 times less, you have to divide 8 by 3. When you do that, you get 2.6̅, or 2.6 repeating, which means that you have 2 that goes into 3 goes into 8 3 times, because 3 x 3 would be 9, which is bigger than 8. Anyway, when you divide again because you have to add a decimal point after the number to keep dividing, you keep getting 6. it's never going to change, because thats what 6̅ is. 6 REPEATING.

I hope this helps! ;)

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