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ZanzabumX [31]
3 years ago
8

The data in the table compares x, the number of pages in a chapter, to y, the amount of time, in minutes, spent reading. The fun

ction y = 0.86x – 0.09 models the data in the table
Which is the best prediction for the number of pages in a chapter that takes 18 minutes to read?
15
17
19
21
Mathematics
2 answers:
Verizon [17]3 years ago
8 0

Answer:

The answer is D on E2020.

Step-by-step explanation:

ololo11 [35]3 years ago
7 0
21
18=0.86x - 0.09     Put 18 as the y value and solve for x
18.09=0.86x           Add 0.09 on both sides.
21.03=x                  Then divide on both sides by 086

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Find an equation of the circle and sketch it if it has: Center on y=4, tangent x-axis at (–2, 0)
Digiron [165]

Answer:

(x+2)^2+(y-4)^2=16

OK, lets start by drawing a basic graph (the first one) so we can visualize.

We already know that the y coordinate of the circle's center is 4.

We know that the circle is tangent to the X axis at (-2,0)

That means the x coordinate of the center has to be -2, as the tangent is a point on the edge of the circle that touches a line at exactly one point.

The radius is the distance from the center of the circle to its edge. We know the center's location now, it is (-2, 4) and a point on the edge of the circle (the tangent point) which is (-2,0). so the distance between the points is 4 which is the radius (you can use the distance formula, but it's quite oblivious.)

We can imagine the circle should look like this (the second one):

Now we can piece together an equation

The equation of a circle is (x-h)^2+(y-k)^2=r^2 where (h,k) is the center and r is the radius. When we put the numbers in: we get (x-(-2))^2+(y-(4))^2=4^2 which can be simplified into (x+2)^2+(y-4)^2=16 which is the answer.

Step-by-step explanation:

4 0
3 years ago
The length of a rectangle is 3 units greater than its width. If the width is w, what expression gives the perimeter of the recta
Andru [333]

Step-by-step explanation:

let width be "w"

given,length of rectangle is 3 units greater than its width

length= w+ 3

perimeter of rectangle= 2( l+ b)

= 2[( w+3)+ w]

= 2(w to the power of 2 + 3w)

= 2w to the power of 2 + 6w

is the answer

3 0
3 years ago
The snooze buttonon your alarm clock activates the alarm every 5 minutes. The snooze button on your cell phone activates the ala
Tomtit [17]

Answer: 7:35 a. M

Step-by-step explanation:

Given that:

Snooze on alarm = 5 minutes

Snooze on cellphone = 7 minutes

If both activates at 7:00 a. M

Time at which both will activate again ;

Obtain the Lowest Common Multiple of 5 and 7

_5 __|5 ___|7

_7__ |1 ___|7

____ |1 ___| 1

Lowest common multiple = (5 * 7) = 35

Hence, both alarms will sound together again after 35 minutes = 7:00a.m + 35 minutes = 7:35 A. M

5 0
3 years ago
What is the volume?<br> help thanks ( :
algol [13]

Answer:

54 is the volume

Step-by-step explanation:

Multiply 9 * 2 * 3 = 54

8 0
3 years ago
How do I solve what is 2/3 of 90
Sergeu [11.5K]
<span>The answer is 60.

Explanation<span>:
In mathematics, the word "of" indicates multiply. This means we would multiply 2/3 * 90.

We can write 90 as a fraction by putting it over 1, which gives us 2/3(90/1).

To multiply fractions, we multiply straight across: (2*90)/(3*1) = 180/3 = 60.</span></span>
3 0
3 years ago
Read 2 more answers
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