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White raven [17]
4 years ago
9

It takes Megan 4 hours to read 3 chapter in her book How many chapters can she read in 10 hours

Mathematics
1 answer:
DerKrebs [107]4 years ago
5 0
In 4 hours, she read 3 chapters.
In 1 hour, she reads 3/4 chapters.
In 10 hours, she reads 3/4 x 10= 3/2 x 5 = 15/2 = 7 and a half chapters.
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PLEASE HELP me with the magic square
defon

Fill in each slot in the square with variables <em>a</em>, <em>b</em>, <em>c</em>, <em>d</em>, and <em>e</em>, in order from left-to-right, top-to-bottom. In a magic square, the sums across rows, columns, and diagonals all add up to the same number called the <em>magic sum</em>.

The magic sum is -3.9, since "diagonal 2" (bottom left to top right) has all the information we need:

3 + (-1.3) + (-5.6) = -3.9

Use this to find the remaining elements

  • row 1:

<em>a</em> + <em>b</em> + (-5.6) = -3.9

  • row 2:

<em>c</em> + (-1.3) + <em>d</em> = -3.9

  • row 3:

3 + <em>e</em> + 0.02 = -3.9

  • column 1:

<em>a</em> + <em>c</em> + 3 = -3.9

  • column 2:

<em>b</em> + (-1.3) + <em>e</em> = -3.9

  • column 3:

(-5.6) + <em>d</em> + 0.02 = -3.9

  • diagonal 1 (top left to bottom right):

<em>a</em> + (-1.3) + 0.02 = -3.9

You will find

<em>a</em> = -2.62

<em>b</em> = 4.32

<em>c</em> = -4.28

<em>d</em> = 1.68

<em>e</em> = -6.92

5 0
3 years ago
Perform the indicated operation <br> g(x)=x^3+5x and f(x)=2x-2 <br> Find (g o f)(x)
Blababa [14]

Answer:

  g(f(x)) = 8x^3-24x^2+34x-18

Step-by-step explanation:

The composition is ...

  (g\circ f)(x)=g(f(x))=g(2x-2)\\\\=(2x-2)^3+5(2x-2)\\\\=(2x)^3 +3(-2)(2x)^2+3(-2)^2(2x)+(-2)^3+10x-10\\\\=8x^3-24x^2 +24x-8+10x-10\\\\\boxed{(g\circ f)(x)=8x^3-24x^2+34x-18}

4 0
2 years ago
How do you find similar triangles (equation?)
Irina-Kira [14]

Two triangles are similar if they have:

<span>all their angles equalcorresponding sides are in the same ratio</span>

But we don't need to know all three sides and all three angles ...two or three out of the six is usually enough.

There are three ways to find if two triangles are similar: AA, SAS and SSS:

6 0
3 years ago
write an equation in slope-intercept form for the line that has a slope of 4 and passes through the point (3,24)​
Harman [31]

Answer:

y = 4x + 12

Step-by-step explanation:

y = mx + b

'm' represents slope

'b' represents the y-intercept

use the slope and the point (3,24) as your x and y inputs to find 'b'

24 = 4(3) + b

24 = 12 + b

b = 12

y = 4x + 12

4 0
3 years ago
Which decimal is equivalent to 26/80?<br> URGENT
cluponka [151]
Answer is .325 hope it helps

6 0
3 years ago
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