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masha68 [24]
2 years ago
10

=

Mathematics
1 answer:
sergiy2304 [10]2 years ago
8 0

Answer:

  Q, R

Step-by-step explanation:

All of the listed sets of numbers are Real numbers. The fraction is not an integer, so is not in sets I or N. Because it is a fraction, it is in set Q, and because R includes Q, ...

  the number is in sets Q and R

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The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?
Triss [41]

Answer:

x^2+ 18x -130=0

Step-by-step explanation:

Given

See attachment for diagram

Required

The equation to find x

First, calculate the area of the big rectangle using:

Area = Length * Width

So:

A_1 = (x + 6) * (3x - 2)

The smaller rectangle

A_2 = (x - 1) * (2x)

The difference between this areas give the area of the shaded region.

So:

A_1 - A_1 = 118

(x+6)*(3x-2) - (x-1)*2x = 118

Open brackets

3x^2 - 2x + 18x -12 -2x^2 +2x = 118

Collect like terms

3x^2 -2x^2- 2x +2x+ 18x -12   - 118=0

x^2+ 18x -130=0

<em>The above equation can be used to solve for x</em>

4 0
3 years ago
What is the surface area of the cube? <br> A 408<br> B 458<br> C 545<br> D 720
lozanna [386]
The surface area of this is letter B.
8 0
3 years ago
A neighbor farmer had some chickens. She had 24 feet of wire fencing to
Paraphin [41]

Answer:

A rectangle is defined by its length = L, and its width = W.

So the perimeter of the of the rectangle can be written as:

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Now, we do not have any other restrictions, so to know the different dimensions now we can write this as a function, by isolating one of the variables.

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or:

L(W) = 12ft - W.

Such that:

W must be greater than zero (because we can not have negative or zero width).

And W must be smaller than 12ft (because in that case we would have zero or negative length)

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8 0
3 years ago
Find the interval(s) on which the function is increasing.
Tatiana [17]

Answer:

II (THE Second one )

Step-by-step explanation:

Because when you substitute X by (-2)

you will get :

y=(-2)^2 - 6(-2) - 16 = Zero

So, -2 is not including in the interval .

4 0
3 years ago
Read 2 more answers
What is the value of R?
Vinil7 [7]

Answer:

B

Step-by-step explanation:

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-5r ≥ -62.5

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(The greater than sign flips around when you divide or multiply both sides by a negative number)

8 0
3 years ago
Read 2 more answers
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