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castortr0y [4]
3 years ago
12

If y =2x^2 -4x-5, what is the value of y when x= -3

Mathematics
1 answer:
matrenka [14]3 years ago
4 0

Answer:

43

Step-by-step explanation:

36+12-5

48-5

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Which will have a greater effect on the volume of the prism: doubling the height or doubling the width? Explain your reasons.
statuscvo [17]
Doubling the width has a greater effect on volume.
The volume of a prism is calculated by this formula:
<span>Prism Volume = Area of Base • Height
The </span><span>Area of the Base </span>is calculated by this formula:
area = n * side² / (4*tan(180 / # of sides)

So, we see that doubling the width (the side length) will increase the volume by 4 whereas doubling the height only doubles the volume.
 

7 0
3 years ago
A square garden has a diagonal of 34 ft. Colton wants to put a fence around the entire garden.
Cerrena [4.2K]

Answer:

96 feet

Step-by-step explanation:

Given : A square garden has a diagonal of 34 ft. Colton wants to put a fence around the entire garden.

To Find: How much fencing will he need? Round to the nearest foot.

Solution:

Formula of diagonal of square = \sqrt{2}a

Where a is the side of the square.

Since we are given the diagonal length of square garden = 34 ft.

So,  34=\sqrt{2}a

\frac{34}{\sqrt{2}}=a

24.04=a

Thus the side of the square garden is 24.04 ft.

Now we are supposed to find how much fencing is required

So, we are supposed to find the perimeter of square.

Perimeter of square = 4 \times side

                                  = 4 \times 24.04

                                  = 96.16

Thus he need 96.16 ≈ 96 feet fencing .

4 0
4 years ago
Read 2 more answers
What is the area of the polygon defined by the points A(12, 20), B(20, 20), C(20, 8), and D(12, 8)? a 96 square units b 132 squa
Leto [7]

Answer:

  a.  96 square units

Step-by-step explanation:

The figure is a rectangle with width AB = (20-12) = 8 units and height BC = (20-8) = 12 units.

The area of the rectangle is (8 units)×(12 units) = 96 square units.

3 0
3 years ago
Please help asap 25 pts
koban [17]
A is the correct answer





good luck
8 0
3 years ago
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2^y+1=3x<br> Solve for y.<br> Thank you!
e-lub [12.9K]
Answer; See attachment

7 0
3 years ago
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