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3 years ago

First person to answer both of these will get 10 points and Brainliest. But your answer has to be correct!

Mathematics

2 answers:

AlladinOne [14]3 years ago

6 0

Answer:

a. 7/2 OR 3 1/2 Either answer should be acceptable

b. 82/15 OR 5 7/15 Either answer should be acceptable

Step-by-step explanation:

a. 5 3/4 = so first multiply the denominator, 4, by the whole number 5 so 4 x 5 is equal to 20. Add this to your numerator, 3.

20 + 3 = 23 so the new fraction is 23/4

Same thing with 2 1/4 4 x 2 = 8 + 1 = 9 9/4

23/4 - 9/4 = 14/4 simplify this to 7/2

b. Same process here:

7 2/3 3 x 7 = 21 + 2 = 23 23/3

2 1/5 5 x 2 = 10 + 1 = 11 11/5

This time, we need a common denominator

3 x 5 = 15

5 x 3 = 15

23/3 x 5/5 = 115/15

11/5 x 3 = 33/15

115/15 - 33/15 = 82/15

Gnoma [55]3 years ago

4 0

Answer:

The correct answer to a is 3 1/2 same answer for the other answer.

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3 years ago

Analysis of an accident scene indicates a car was traveling at a velocity of 69.5 mph (31.1 m/s) along the positive x-axis at th

STatiana [176]

We can find the acceleration via

${v_f}^2-{v_i}^2=2a\Delta x$

We have

$\left(5.20\dfrac{\rm m}{\rm s}\right)^2-\left(31.1\dfrac{\rm m}{\rm s}\right)^2=2a(115\,\mathrm m)$

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$a_{\rm ave}=\dfrac{v_f-v_i}t$

so that

$-4.09\dfrac{\rm m}{\mathrm s^2}=\dfrac{5.20\frac{\rm m}{\rm s}-31.1\frac{\rm m}{\rm s}}t$

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We alternatively could have found the time without knowing the acceleration. Since acceleration is constant, the average velocity is

$v_{\rm ave}=\dfrac{x_f-x_i}t=\dfrac{v_f+v_i}2$

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Step-by-step explanation:

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marusya05 [52]

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4 years ago

Read 2 more answers

First person to answer both of these will get 10 points and Brainliest. But your answer has to be correct!​

First person to answer both of these will get 10 points and Brainliest. But your answer has to be correct!