MATHEMATICS COLLEGE

Someone please give me all the answers!

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

1.=71

2.=25

3.=28

4.=15 (is the sybmbol at the end is division it is 8)

5.=68/17

6.=48/9

7.=96 (if the symbol at the end is division it is 106)

8.=30

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If ST=19 and S lies at -4 , where could T be located?

Answers

Answer:

15 or -23

Step-by-step explanation:

I think you probably already turned this in but in case you haven't:

ST = 19 means that line segment ST is 19 units long. If we know that S is at -4, then T has to be 19 units away from -4, right?

So there's two directions we could go.

Add 19 to -4 to get 15, so T could be at 15. (If there's a line drawn between -4 and 15, it would be 19 units long.)

But the line could go left, towards negative infinity, too. So if we subtract 19 from -4, we'd get -23. T could also be at -23. (If there's a line drawn between -4 and -23, it would also be 19 units long. There's no such thing as a negative length.)

Please mark as Brainliest! :)

Collect like terms
−
8
d
2
−
3
d
2

Answers

Answer:

8,2,2,3

d,d,

HOPE THIS HELPS

Answer:

5d²

Step-by-step explanation:

Given

8d² - 3d² ← collect like terms by subtracting the coefficients, that is

(8 - 3)d²

= 5d²

A motorboat moves across a lake. It begins at 50km from shore after 9 minutes it is 14 km from shore. What’s it’s distance from shore in a function

Answers

Answer:

y = -4x + 50

Step-by-step explanation:

To write the function we'll use y = mx + b, where y is the distance the boat is away from shore, m is how many km/minute the boat moves at, x is how many minutes it's been, and b is how many km away from shore the boat was at the start. We already know the value of b is 50, so we can put that into the equation:

y = mx + 50

To find how many km the boat moves per minute, let's use the given amount of minutes and km (9, 14) and put them into the equation:

14 = m(9) + 50

Now let's solve for m:

14 = 9m + 50

Subtract 50 from both sides to isolate the 9m:

14 - 50 = 9m + 50 - 50

- 36 = 9m

divide both sides by 9 to isolate the m:

-36/9 = 9m/9

-4 = m

The boat moves at -4 km/minute, which is the same thing as saying that after 1 minute passes, the boat gets 4km closer to the shore. Now we can input this value into the equation and we have our answer:

y = -4x + 50

Answer:

List all of the solutions.

50km=

9minutes=

14km=

Step-by-step explanation:

9,13,43,55 what is the mean absolute deviate (MAD) of their ages

Answers

The mean absolute deviation (MAD) of their ages is 19 and this can be determined by using the formula of mean absolute deviation.

Given :

Ages - 9 , 13 , 43 , 55

The meanabsolute deviation is given by the formula:

$\rm MAD = (1)/(n)\sum^(n)_(i=1)|x_i-m(X)|$

where n is the total number of data values, $x_i$ is the data value in the set, and m(X) is the average value of the data set.

So, to find MAD first evaluate the value of m(x).

$\rm m(X) = (9+13+43+55)/(4)$

m(X) = 30

Now, the MAD of their ages is:

$\rm MAD = (|9-30|+|13-30|+|43-30|+|55-30|)/(4)$

$\rm MAD=(21+17+13+25)/(4)$

MAD = 19

So, the mean absolute deviation (MAD) of their ages is 19.

For more information, refer to the link given below:

brainly.com/question/7851768

Answer:

The mean absolute deviation of this data $\{9,13,43,55\}$ is $MAD =19$ .

Step-by-step explanation:

The mean absolute deviation (MAD) of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.

The steps to find the MAD include: