PLEASE HELP!! 8TH/9TH GRADE MATH!!

Mathematics

2 answers:

a_sh-v [17]3 years ago

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B 112 m/s; it represents the average speed of the object between 3 seconds and 5 seconds

Yuliya22 [10]3 years ago

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(350-126)/(5-3)=112m/s

This is the average speed in the time from 3 to 5 seconds...

dd/dt 98,126,154
d2d/dt2 28,28

She actually had a constant acceleration over the entire time period.

The function for that table is:

d(t)=14t^2

Her actual velocity at any point is v(t)=28t (you can see that if you take the mid point of the interval, 4s, you will get the average velocity found earlier)

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Which of the following sets of inequalities

Ludmilka [50]

Inequalities help us to compare two unequal expressions. The correct options are 2 and 3.

<h3>What are inequalities?</h3>

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

The inequality for the red portion is,

slope, m = (-2/-4) = 1/2

y-intercept is 2.

y ≤ (1/2)x + 2

The inequality for the blue portion is,
slope, m = (5-0)/(3-0.5) = 2

y-intercept is -1.

y > 2x - 1

Hence, the correct options are 2 and 3.

Learn more about Inequality:

brainly.com/question/19491153

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