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Shkiper50 [21]
3 years ago
13

A teacher keeps track of how many books are read by students in each class. Which grade has read has read a higher rate hook per

student? How many more book does the other grade need to read to have the same rate
Mathematics
2 answers:
12345 [234]3 years ago
6 0
For the answer to the question above asking h<span>ow many more book does the other grade need to read to have the same rate?
I think the answer here is </span>the 7 grader needs to read 94 more books in order to catch up with 6 grade.
stira [4]3 years ago
3 0

Answer:

gsergTDhghee

Step-by-step explanation:

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Please help :)))) ( attachment )
Anastaziya [24]
Let,
f(x) = -2x+34
g(x) = (-x/3) - 10
h(x) = -|3x|
k(x) = (x-2)^2

This is a trial and error type of problem (aka "guess and check"). There are 24 combinations to try out for each problem, so it might take a while. It turns out that 

g(h(k(f(15)))) = -6
f(k(g(h(8)))) = 2

So the order for part A should be: f, k, h, g
The order for part B should be: h, g, k f
note how I'm working from the right and moving left (working inside and moving out).


Here's proof of both claims

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

Proof of Claim 1:

f(x) = -2x+34
f(15) = -2(15)+34
f(15) = 4
-----------------
k(x) = (x-2)^2
k(f(15)) = (f(15)-2)^2
k(f(15)) = (4-2)^2
k(f(15)) = 4
-----------------
h(x) = -|3x|
h(k(f(15))) = -|3*k(f(15))|
h(k(f(15))) = -|3*4|
h(k(f(15))) = -12
-----------------
g(x) = (-x/3) - 10
g(h(k(f(15))) ) = (-h(k(f(15))) /3) - 10
g(h(k(f(15))) ) = (-(-12) /3) - 10
g(h(k(f(15))) ) = -6

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

Proof of Claim 2:

h(x) = -|3x|
h(8) = -|3*8|
h(8) = -24
---------------
g(x) = (-x/3) - 10
g(h(8)) = (-h(8)/3) - 10
g(h(8)) = (-(-24)/3) - 10
g(h(8)) = -2
---------------
k(x) = (x-2)^2
k(g(h(8))) = (g(h(8))-2)^2
k(g(h(8))) = (-2-2)^2
k(g(h(8))) = 16
---------------
f(x) = -2x+34
f(k(g(h(8))) ) = -2*(k(g(h(8))) )+34
f(k(g(h(8))) ) = -2*(16)+34
f(k(g(h(8))) ) = 2
5 0
3 years ago
What is the solution of 5/2-7= 3/4x+14,
Sidana [21]

Answer:

D) x = 12

Step-by-step explanation:

Given:

\sf{\dfrac{5}{2}x-7=\dfrac{3}{4}x+14 \implies \dfrac{10}{4}x-7=\dfrac{3}{4}x+14}

1. Multiply both sides by 4

\sf{4\left(\dfrac{10}{4}x-7\right)=4\left(\dfrac{3}{4}x+14\right)}\\\\\implies 10x-28=3x+56

2. Subtract 3x from both sides

\sf{10x-3x-28=3x-3x+56}\\\\\implies 7x-28=56

3. Add 28 to both sides

\sf{7x-28+28=56+28}\\\\\implies 7x=84

4. Divide both sides by 7 to isolate the variable:

\sf{\dfrac{7x}{7}=\dfrac{84}{7}}\\\\\implies x=12

Learn more here:

brainly.com/question/27844194

3 0
1 year ago
What is the volume of the cone ?
sleet_krkn [62]

{210in}^{3}

This is found by the volume of a cone formula

b \times  \frac{h}{3}

Where b is the base and h is the height

45 \times  \frac{14}{3}   =  \frac{630}{210}  = 210

5 0
3 years ago
What is this proportion 3/4=16/x
andrew-mc [135]

Answer:

x = 21

Step-by-step explanation:

3x = 16 * 4 = 64

x = 64/3

x = 21

3 0
3 years ago
On Monday it snowed 9 inches.The next day it snowed 1/2 that amount.How much did it snow on the second day
mr Goodwill [35]

Answer:

On the second day it snowed 4.5 inches.

Step-by-step explanation:

This is because Monday it snowed 9 inches.

It tells us the next day it told us it snowed 1/2 that amount.

To solve this you can simply do  9 ÷ 2 = 4.5.

5 0
3 years ago
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