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klemol [59]
3 years ago
5

Solve for x. show your work. 2x^2+8x=-10

Mathematics
2 answers:
Anastasy [175]3 years ago
8 0
120 because 2x^2+8x=-10
malfutka [58]3 years ago
3 0

Answer:

120

Step-by-step explanation:

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Describe the pattern. Draw what might be the next three figures in the pattern
Dennis_Churaev [7]
You add another row and the row has to be one taller than the row before it
6 0
4 years ago
The perimeter of a triangular field is 84 m, if the ratio of its sides are 13: 14:15, Find the area of the field. *
denis-greek [22]

Answer:

Area = 336\ m^2

Step-by-step explanation:

If the ratio of the sides is 13:14:15, we can say that the length of each side is 13x, 14x and 15x.

Then, if the perimeter is 84 m, we have:

P = 13x + 14x + 15x = 84

42x = 84

x = 2

The length of each side is:

13x = 26\ m

14x = 28\ m

15x = 30\ m

Now, to find the area of the field, we can use the following formula:

Area = \sqrt{p(p-a)(p-b)(p-c)}

Where a, b and c are the sides and p is the semi perimeter:

p = P/2 = 42\ m

So we have that:

Area = \sqrt{42(42-26)(42-28)(42-30)}

Area = 336\ m^2

8 0
3 years ago
Which of the following is not a congruence theorem or postulate
fomenos

Answer:

AAA

Step-by-step explanation:

AAA is not a congruence theorem or postulate.

8 0
3 years ago
6. Monique is making an ottoman for her living room. She covers the top of the ottoman with fabric. How much surface would she n
pantera1 [17]
I believe she would need to stain 548 inches of the surface.

Excluding the top and bottom, you are left with two panels that are 10 by 7.4, and two panels that are10 by 20, so

10•7.4= 74•2 =148
10•20= 200•2 =400
148 + 400= 548

Please correct me if I am wrong, have a good day!
7 0
3 years ago
Write x squared + 2x-8 in the form (x + m) squared + n where m and n are integers.
skelet666 [1.2K]
Let F(x) = x^2 + 2x -8

Adding 1 and - 1 at equation

F(x) = x^2 + 2x + 1 - 1 -8

Rewrinting the first 1 = 1^2

F(x) = x^2 + 2x + 1^2 - 1 - 8

Now look:

x^2 + 2x + 1^2 = ( x + 1)^2

Then,

F(x) = (x + 1)^2 -1 -8

F(x) = (x + 1)^2 -9

This is the answer !

If us to want.

(x + 1)^2 -9 = ( x+1)^2 - 3^2

= ( x+ 1 -3).(x +1 +3)

= ( x - 2).(x +4)

7 0
4 years ago
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