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3 years ago

Spiral Review (Reviews 2.G.A.1, 2.G.A.3, 3.0A.0.9)

Mathematics

1 answer:

DochEvi [55]3 years ago

8 0

Answer:

The Identity Property

Step-by-step explanation:

The identity property for addition tells us that zero added to any number is the number itself. Zero is called the "additive identity." The identity property for multiplication tells us that the number 1 multiplied times any number gives the number itself.

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The function shown below was created to track the different intervals of speed that an automobile travels over a period of 28 se

Ksenya-84 [330]

Answer:

1. The car is slowing down at a rate of 2.5mph/s

2. The greatest acceleration is 10 mph/s.

3. In the interval 4s to 16s the speed remains constant and has magnitude 25 mph.

Step-by-step explanation:

1. The deceleration of the car is from 16 seconds to 24 seconds is the slope $m$ of the graph from 16 to 24:

$m=\dfrac{\Delta speed }{\Delta time } = \dfrac{5-25}{24-16} =-2.5mph/s$

the negative sign indicates that it is deceleration.

2. The automobile experiences the greatest change in speed when the slope is greatest because that is when acceleration/deceleration is greatest.

From the graph we see that the greatest slope of the graph is between 28 and 24 seconds. The acceleration the interval is the slope $m$ :

$m= \dfrac{45-5}{28-24}= 10mph/s$

3. The automobile experiences no acceleration in the interval 4 s to 16 s—that's the graph is flat.

The speed of the automobile in that interval, as we see from the graph, is 25 mph.

7 0

3 years ago

Read 2 more answers

Equation which i dont like math not no brainly my question 3 (k-12)=k-30

vaieri [72.5K]

3 (k-12) = k-30

3k - 36 = k - 30

3k - k = -30 + 36

2k = 6

k = 3

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3 years ago

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This year, a small business had a total renvue of 51,000. If this 36% more than their total renvue the previous year, what was t

kenny6666 [7]

Answer: well your answer is 18360

Step-by-step explanation: so let's say 51,000 is 100% and x is what where looking for, we know x is 36% so write x=36% the you have 51,000=100% now you have two simple equations.

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3 years ago

What is the solution to the equation 2x+4 - 12 = 20?<br> O X=0<br> O X=1<br> O X= 2<br> O X=9

Alex Ar [27]

Answer:

x = 14

Step-by-step explanation:

2x+4 - 12 = 20

2x - 8 = 20

2x = 28

x = 14

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3 years ago

If the cost of a dozen eggs rises from .99 to 1.34 what is the percent of the increase

Amiraneli [1.4K]

To find the percent of increase get the difference between the prices and then divided by the oringinal price and then time that by 100

increase = $\frac{1.34 - .99}{.99} \times 100$

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3 years ago