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Reika [66]
1 year ago
12

Use the points (2, 45) and (8, 90) to find the slope and y-intercept of the trend line for the data comparing hours studied to t

est scores.
m =
b =
Mathematics
1 answer:
NARA [144]1 year ago
4 0

Answer:

m= 7.5

b= 30

Step-by-step explanation:

You might be interested in
2. A boy and his father played 26 games of checkers. For every game the boy lost, he gave his father 5 cents. For every game the
trasher [3.6K]

Answer: the boy won 10 games

Step-by-step explanation:

Let's call B as the number of games won by the boy, and F as the number of games won by the father.

We know that, there is a total of 26 games:

B + F = 26.

We know that in each game won by the boy, he wins 8 cents, for every game that the father wins, the boy losses 5 cents, and we know that at the end of the 26 games, the boy did not win or lose any money, so we have:

B*8 + F*(-5) = 0.

Then we have a system of equations:

B + F = 26

8*B - 5*F = 0.

The first step is isolating one of the variables. Let's start isolating F in the first equation:

B + F = 26

F = 26 - B.

Now we can replace this in the second equation:

8*B - 5*F = 0

8*B - 5*(26 - B) = 0

8*B + 5*B - 5*26 = 0

13*B = 5*26

B = 5*26/13 = 5*2 = 10

So the boy won 10 games (then the father won the other 16 games)

7 0
1 year ago
What are two other ways to write 9(46)?
Marina86 [1]
Ok so 9(46) means 

9*46

So 9*46 would be ur 1st way and ur 2nd would be 

46*9

Check:- 

9*46=414
46*9=414

Ans
9*46
46*9

Hope I helped:P



7 0
2 years ago
Read 2 more answers
Which expression is modeled by this arrangement of tiles?
Gnoma [55]

Answer:

The answer is 16 ÷ 2 = 8.

Step-by-step explanation:

Now, to find the expression modeled by arrangement of tiles.

So, according to the model in the question.

There are 16 tiles in the model.

So, arrangement of 16 tiles divided into 2 groups.

Where each group consist 8 tiles.

So, we can write as:

16\div 2

As 16 is the number of tiles and 2 is the number of groups.

Now, we can check the expression by doing the division.

16\div 2 = 8

Therefore, each group has 8 tiles.

6 0
2 years ago
Read 2 more answers
Eric has two dogs. He feeds each dog 250 grams of dry food each, twice a day. If he buys a 10-kilogram bag of dry food, how many
viktelen [127]
It will last around 10 days
8 0
1 year ago
Read 2 more answers
For several hours you watch a group playing dice on the street and you notice that the owner of the dice often wins. do you conc
Alenkinab [10]
The owner is most likely cheating because it is usually a 50|50 chance of winning. But, you usually only get 50, and win a bit less and loose more. So, he is most likely cheating. (Hope this helped  :D)
8 0
2 years ago
Read 2 more answers
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