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KengaRu [80]
3 years ago
5

Question: A book contains 10 photograph , some in color and some in black-and-white. Each

Mathematics
1 answer:
padilas [110]3 years ago
8 0

Answer:

B

Step-by-step explanation:

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3. Is the relationship shown by the data linear? If so, model the data with an equation X | Y 1 ,5| 5,10| 9,15| 13,20|
son4ous [18]

Answer:

y=\frac{5}{4}x+\frac{15}{4}

Step-by-step explanation:

x | y

-------

1     5

5   10

9    15

13   20

This one is linear because as x goes up by the same number so does y. So the ratio of difference of y to difference of x is the same per pair of points.

So a linear equation in slope-intercept form is y=mx+b where m is the slope and b is the y-intercept.

To find the slope, I'm going to line up the points vertically and subtract, then put 2nd difference over 1st difference. Like so,

( 1    ,   5)

-( 5   ,  10)

----------------

-4          -5

So the slope is 5/4 which makes sense since the y's are going up by 5 each time and the x's are going up by 4 each time.

So we have m=5/4. Let's plug that into our y=mx+b.

y=5/4 x+b

To find b, we need to use y=5/4 x+b along with one of the given points.

Choose; it doesn't matter.  I like (1,5) I guess.

y=5/4 x +b with (1,5)

5=5/4 (1)+b

5=5/4    +b

Subtract 5/4 on both sides:

5-5/4=b

20/4-5/4=b  (Found a common denominator)

15/4=b

The y-intercept is 15/4 so b=15/4.

So the equation for the line in slope-intercept form is y=5/4 x +15/4.

y=\frac{5}{4}x+\frac{15}{4}

4 0
3 years ago
Read 2 more answers
anyone please help asap!!! The theater holds 250 people last last nights performance was sold out, students under the age of 16
3241004551 [841]

Answer:

there were 60 people that are under 16 and 190 people above 16.

4 0
3 years ago
I WILL MARK BRAINIEST <br> PLEASE HELP ASAP
Leni [432]

Answer:

1: 4:15

2: 4/15

Step-by-step explanation:

I think Im right. I hope this helps you out!

7 0
2 years ago
Read 2 more answers
Which is greater, 3/4 or 11/16? How can you be sure?
Aleksandr-060686 [28]
3/4 because if you multiply to get the LCM (16)  it becomes 12/16 which is greater than 11/16
4 0
3 years ago
How do I answer this question ​
Readme [11.4K]

Answer:

x = 4

Step-by-step explanation:

-x + 6 = 0.5x

1.5x = 6

x = 4

5 0
2 years ago
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