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AVprozaik [17]
3 years ago
12

What are the solutions of 2x2 + 3x = -5

Mathematics
2 answers:
Daniel [21]3 years ago
7 0
2x^2 + 3x = -5\\2x^2 + 3x +5=0\\ \Delta=3^2-4\cdot2\cdot5=9-40=-31\\\\\Delta
Dvinal [7]3 years ago
5 0
X=-3 since 4 + 3x = -5 then subtracting 4 on each sides you get that 3x = -9 and so x=-9/3 which is equal to -3.
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I need help with my answer. If you could show your work that would be great.
Paladinen [302]

Answer:

8 = m

Step-by-step explanation:

\frac{-y_1 + y_2}{-x_1 + x_2} = m

\frac{0 + 80}{0 + 10} = \frac{80}{10} = 8

* You are correct my friend!

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3 0
3 years ago
angle a is supplementary to angle b. angle b is complementary to angle c . from this what can we conclude
kakasveta [241]

Answer:

Angle A is larger than angle C

Step-by-step explanation:

The reason for this is a visual concept. Since A is supplementary to angle B, then A is a greater measure than B, making B complimentary. B is complementary to Angle C making B the smallest angle, C the "medium angle" and A the largest angle. From this however, we can conclude angle A is larger than angle C.

3 0
3 years ago
Geometry an Isosceles triangle has at least two congruent sides the permitter of a certain isosceles triangle is at most 12 inch
salantis [7]
I believe that it’s 7 but I could be wrong
8 0
3 years ago
Find the solutions for a triangle with a = 16, c =12, and B = 63º.
maks197457 [2]

Answer:

b. A = 71.6°; C = 45.40°; b =15.0

Step-by-step explanation:

The missing values can be found with the help of the Law of Cosine and properties of triangles:

Side b (Law of Cosine)

b = \sqrt{a^{2}+c^{2}-2\cdot a \cdot c \cdot \cos B}

b = \sqrt{16^{2}+12^{2}-2\cdot (16)\cdot (12) \cdot \cos 63^{\circ}}

b \approx 15.022

Angle A (Law of Cosine)

\cos A = -\frac{a^{2} - b^{2}-c^{2}}{2\cdot b \cdot c}

\cos A = - \frac{16^{2}-15.022^{2}-12^{2}}{2\cdot (15.022)\cdot (12)}

\cos A = 0.315

A= \cos^{-1} 0.315

A \approx 71.639^{\circ}

Angle C (Sum of internal angles in triangles)

C = 180^{\circ} - 63^{\circ} - 71.639^{\circ}

C = 45.361^{\circ}

Hence, the right answer is B.

6 0
3 years ago
4000 / 19=<br>4000 / 19=​
katrin2010 [14]

Answer:

210.53

Step-by-step explanation:

here

hope it helps

7 0
2 years ago
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