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3 years ago

30 points! The solutions to the equation: 2x2 + x-1 = 2 are x=-3/2 or X=___

1 answer:

3 0

Answer: A quadratic equation is one of the form ax2 + bx + c = 0, where a, b, and c are numbers, and a is not equal to 0. So I think x = 4 but not 100%

Sorry if I'm wrong but I hope this helps

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FIRST PERSON WHO ANSWERES CORRECTLY GETS A BRAINLIEST AND THIS IS WORTH 12 POINTS

KatRina [158]

Here is your answer

Area of 2 triangular part
=2× (1/2 × 3 × 4)

=12 sq. units

Area of three rectangular parts= (l×b)

= 11×5 + 11×4 + 11×3

= 55+44+33

= 132 sq. units

Hence,

surface area of prism= 12+132

= 144 sq. units

HOPE IT IS USEFUL

3 0

3 years ago

Which of the following parabolas opens upward and appears narrower than y = −3x^2 + 2x − 1? A. y = 4x^2 − 2x − 1 B. y = −4x^2 +

Kamila [148]

Narrowing it down it's either a or c because the other 2 choices open downward (negative a).
Graphing the 2 parabolas choice c is narrower.
c

7 0

3 years ago

What is the following equal to 7 times 10^3

Masja [62]

Answer:

7000

Step-by-step explanation:

10^3=1000

1000*7=7000

3 0

4 years ago

Read 2 more answers

PLEASE HELP I DONT UNDERSTAND ILL GIVE MORE IF ITS RIGHT

andre [41]

Answer:

120

Step-by-step explanation:

The prism shown is a triangular prism

The volume of a triangular prism can be found by multiplying the area of the base ( which is a triangle ) by the length of the prism ( which is 10 feet )

First let's find the area of the base.

To find the area of a triangle we use this formula $A=\frac{bh}{2}$

where b = base length and h = height

The base length is 6ft and the height is 4ft.

Using these dimensions we plug in the values into the formula

$\frac{4*6}{2} \\4*6=24\\\frac{24}{2} =12$

So the area of the base is 12ft²

Finally to find the volume we multiply the area of the base by the length of the prism

12 * 10 = 120

Hence, the volume of the prism is 120ft³

7 0

3 years ago

Using a graph, table of values, and/or equations solve the following problem.

Ket [755]

Answer:

6.7

Step-by-step explanation:

let n = the number

3n + 9 = 29

3n = 20

n = 20/3 or 6.67

8 0

4 years ago