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3 years ago

Which expression is equivalent to -16 - 9? O A. 16+9 O B. -16 +(-9) O C. -16 + 9 O D. 16 + (-9)

Mathematics

1 answer:

g100num [7]3 years ago

7 0

Answer:

Step-by-step explanation:

because -16+(-9) is essentially the same thing because you're adding the -9 to the -16

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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

THe equation of the graph line is 2x-3y=12 what is the x-intercept of the graph

katrin2010 [14]

2x-3y=12

Make y substitute 0

2x-3(0)=12

2x= 12

X= 12-2

X= 10

X-intercept is 10

5 0

3 years ago

Find the sum of the first 9 terms of the sequence. Show all work for full credit.

Kamila [148]

We can see the sequence goes by decreasing 9 on each number

so the numbers are

2, -7, -16, -25, -34, -43, -52, -61, -70

so adding all these numbers we get

2-7-16-25-34-43-52-61-70

= -306

hope this helped

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3 years ago

What is the value of y?

prohojiy [21]

Answer:

it is 108 because 180-72

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3 years ago

Salvatore attends class every 4 weeks, chess club every 2 weeks, and fencing lessons every 3 weeks. If he attended all three thi

Amiraneli [1.4K]

Answer:

Step-by-step explanation:

Listing the weeks he will attend each item

Class 4,8,12,16

Chess 2,4,6,8,10,12

Fencing 3,6,9,12

Starting today at week 0, he will attend all 3 again at week 12

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3 years ago

Read 2 more answers

Which expression is equivalent to -16 - 9? O A. 16+9 O B. -16 +(-9) O C. -16 + 9 O D. 16 + (-9)​

Which expression is equivalent to -16 - 9? O A. 16+9 O B. -16 +(-9) O C. -16 + 9 O D. 16 + (-9)