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Leno4ka [110]
3 years ago
7

Sam's track coach stands at the center of a circular track timing Sam's run. Which graph shows Sam's relative distance from the

coach compared to time?
Mathematics
1 answer:
timofeeve [1]3 years ago
4 0
It shows the distance between him and the coach getting the “motion” of his running time. It’s like the circle with the line in the middle...
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a two digit number has the following properties. If you add the digits together and multiply the result by 10, you will get 9 mo
konstantin123 [22]

Answer:

10, 11, 12, 13, 14, 15, 16, 17, 18, 19

Step-by-step explanation:

A two-digit number can be written as:

a*10 + b

Where a and b are single-digit numbers.

a is the tens digit

b is the units digit.

the reverse number is:

b*10 + a

We know that:

"If you add the digits together and multiply the result by 10, you will get 9 more than the reverse number"

Then:

(a + b)*10 = b*10 + a + 9

We now need to solve this for a and b, where the other restriction that we have is that a and b can be any whole number of the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

Then:

(a + b)*10 = b*10 + a + 9

a*10 + b*10 = b*10 + a + 9

subtracting b*10 in both sides, we get:

a*10 = a + 9

solving this for a, we get:

a*10 - a = 9

a*(10 - 1) = 9

a*9 = 9

a = 9/9

a = 1

and notice that we do not have any restriction for b.  So b can be any number of the set.

for example, if b = 2

a*10 + b = 12

now let's test the property:

10*(1 + 2) = 2*10 + 1 + 9

30 = 20 + 10 = 30

now if b = 4, we have:

a*10 + b = 1*10 + 4 = 14

10*(1 + 4) = 4*10 + 1 + 9

50 = 50

So we can see that for any value of b, this will work.

So the only restriction that we have, is that a must be equal to 1.

Then the numbers are:

10, 11, 12, 13, 14, 15, 16, 17, 18, 19

4 0
3 years ago
The graph shows the temperature of a room, in degrees Fahrenheit, over time, t, in minutes . For which values of t (time) is the
luda_lava [24]
<span>the temperature of a room, in degrees Fahrenheit, over time, t, in minutes increases in two time intervals.that are :
</span>A. from t = 0 to t = 20 
<span>D. from t = 50 to t = 70
</span>See the attachment for graph.

4 0
3 years ago
Someone pleaseee help me on this...
chubhunter [2.5K]

Answer:

Looks like 1 to me the first line

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Martha types a 4−digit code into a keypad to unlock her car doors. The code uses the numbers 1 and 0. If the digits are selected
rusak2 [61]

Answer:

3/8

Step-by-step explanation:

1. We list all codes that start with 0 and have 0 as second digit:

2. We list all codes that start with 0 and have 1 as second digit:

3. We list all codes that start with 1 and have 0 as second digit:

4. We list all codes that start with 1 and have 1 as second digit:

5. We find the number of codes which have exactly 2 zeros: 6 codes

6. The total number of outcomes is: 16 codes

7. We find the probability that the number of codes has exactly 2 zeros: 6/16 3/8

7 0
3 years ago
Read 2 more answers
ASAP <br> {(-6, 4), (5,-1), (0, 3), (-2,4)}<br> a. Domain=<br> b. Range =<br> c. Function=
Mila [183]

Answer:

domain=-6,5,0,-2

range=4,-1,3,4

Step-by-step explanation:

u gotta ask function to someone else sry

5 0
3 years ago
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