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BaLLatris [955]
2 years ago
9

Meredith read 21 out of 40 chapters of her library book What decimal represents the part of the chapters she has NOT yet read?​

Mathematics
1 answer:
DerKrebs [107]2 years ago
7 0
If she read 21/40, this means that she hasn’t read 19 of the 40 chapters.

You can divide 19/40 to get the decimal
19/40=0.475

Hope this helps!! :)
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For all values of x
Yuliya22 [10]

Answer:

A.) gf(x) = 3x^2 + 12x + 9

B.) g'(x) = 2

Step-by-step explanation:

A.) The two given functions are:

f(x) = (x + 2)^2 and g(x) = 3(x - 1)

Open the bracket of the two functions

f(x) = (x + 2)^2

f(x) = x^2 + 2x + 2x + 4

f(x) = x^2 + 4x + 4

and

g(x) = 3(x - 1)

g(x) = 3x - 3

To find gf(x), substitute f(x) for x in g(x)

gf(x) = 3( x^2 + 4x + 4 ) - 3

gf(x) = 3x^2 + 12x + 12 - 3

gf(x) = 3x^2 + 12x + 9

Where

a = 3, b = 12, c = 9

B.) To find g '(12), you must first find the inverse function of g(x) that is g'(x)

To find g'(x), let g(x) be equal to y. Then, interchange y and x for each other and make y the subject of formula

Y = 3x + 3

X = 3y + 3

Make y the subject of formula

3y = x - 3

Y = x/3 - 3/3

Y = x/3 - 1

Therefore, g'(x) = x/3 - 1

For g'(12), substitute 12 for x in g' (x)

g'(x) = 12/4 - 1

g'(x) = 3 - 1

g'(x) = 2.

5 0
3 years ago
Which tools can be used for inductive reasoning?
frosja888 [35]
Inductive reasoning is a kind of reasoning the involves taking specific information and from these information, will create a broader generalization or conclusion. This includes providing strong evidence for the truth of the conclusion. The tools that can be used for inductive reasoning are observation, experimentation and facts. 
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3 years ago
What is the midpoint of the segment shown below (-11,0) (9,-1)
marissa [1.9K]

Answer:

(-1, -1/2)

Step-by-step explanation:

M= (Xa+Xb/2, Ya + Yb/2)


M= -11+9/2  ,  0 + -1/2

M = -2/2, -1/2

M=(-1, -1/2)

6 0
2 years ago
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The temperature is -4 degrees at 6am and rises 13 degrees by midday. What is the temperature at midday?
Mars2501 [29]

It is 9 degrees by midday

3 0
3 years ago
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Write the linear equation in slope-intercept form and simplify.<br> –4x + 13y = 7
statuscvo [17]

\\ \sf\longmapsto -4x+13y=7

\\ \sf\longmapsto 13y=4x+7

\\ \sf\longmapsto y=\dfrac{4x+7}{13}

\\ \sf\longmapsto y=\dfrac{4}{13}x+\dfrac{7}{13}

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2 years ago
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