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kotykmax [81]
3 years ago
6

A wall is 20 inches thick. 6 inches is​ concrete, 9 inches is​ brick, and 5 inches is limestone. What fraction of the wall is​ c

oncrete?
Mathematics
2 answers:
Citrus2011 [14]3 years ago
8 0

Answer:

30%

Step-by-step explanation:

NNADVOKAT [17]3 years ago
4 0

Answer:

6/20 or 30%

Step-by-step explanation:

As the entire thickness of the wall is 20 inches it becomes our base. Then we find how much of that is concrete (6 inches) and put it as our numerator.  

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Click here What is the average rate of change for this exponential function for the interval from x=2 to x = 4? 15 10 -5 5 10 O
Triss [41]

Answer:

c. 6

Step-by-step explanation:

Given

See attachment for graph

Required

Average rate of change

This is calculated as:

Rate = \frac{f(b) - f(a)}{b - a}

Where

(a,b) = (2,4)

So, we have:

Rate = \frac{f(4) - f(2)}{4 - 2}

Rate = \frac{f(4) - f(2)}{2}

Using the attached graph, we have:

f(2) = 4

f(4) = 16

So, we have:

Rate = \frac{16- 4}{2}

Rate = \frac{12}{2}

Rate = 6

4 0
3 years ago
Give a decimal number that is less than 23.7 and greater than 23.7
Makovka662 [10]
I think you are asking for two numbers, so you just have to look at the decimals.

23.7

We can use an infinite amount of numbers here, but to make it simple you can just take away 0.01 or add 0.01.

23.69
23.71

These are funny answers as well because they both round to 23.7 and meet the requirements.

3 0
3 years ago
Read 2 more answers
The Sum of the square of a number and 34
almond37 [142]
2n+34 i=is an <span>algebraic expression<span> </span></span>
7 0
3 years ago
Find the area. The figure is not drawn to scale.
ELEN [110]

area of a triangle is 1/2 x base x height

 base = 19

 height = 3

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3 0
3 years ago
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Find the exact value of secθ if cscθ=-4/3 and the terminal side of θ lies in Quadrant III.
Anton [14]
Quadrant is III so, sign would be negative for Sec.
Now, we know, csc = H / P
So, H = 4, P = 3
Calculate for B, 
B² = H² - P²
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B² = 16 - 9
B = √7

We know, sec Ф = H / B = 4 / √7
We can write it as: -4√7 / 7  [ -ve sign for 3rd quadrant ]

In short, Your Answer would be Option B

Hope this helps!
6 0
4 years ago
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