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2 years ago

If at least one interior angle is a reflex angle, then the polygon is concave. False True

Mathematics

2 answers:

kondaur [170]2 years ago

6 0

The answer would be false

Darina [25.2K]2 years ago

4 0

Answer:

The answar is false

Step-by-step explanation:

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How many solutions can be found for the equation 5x + 3(x − 1) = 10x − 2x − 3?

ahrayia [7]

Answer:

4. Infinitely many

Step-by-step explanation:

5x + 3(x − 1) = 10x − 2x − 3

5x+3x-3=8x-3

5x+3x-8x=3-3

0=0

x∈R

6 0

3 years ago

What part of the story does this portion of the graph represent?

NeX [460]

Answer:

Step-by-step explanation:

Area of the Velocity-Time graph gives the displacement of the motion .

3 0

2 years ago

Find the roots of the following polynomial equations: 1. y = 2x2 + 3x - 5

nydimaria [60]

Answer:

Step-by-step explanation:

$y=2x^2+3x+5\\$

Using the quadratic formula:

$\frac{-3+-\sqrt{9-4(2)(5)}}{2(2)} = \frac{-3+-\sqrt{-31}}{4}$

Since the discriminant is negative, -31, there are no real roots

3 0

3 years ago

Which of the following is a perfect square trinomial?

shutvik [7]

Answer:

Step-by-step explanation:

Take a look at what happens when squaring either of these...

$(ax-by)^2=(ax-by)(ax-by)=a^2x^2-2abxy+b^2y^2\\\\(ax+by)^2=(ax+by)(ax+by)=a^2x^2+2abxy+b^2y^2\\$

Notice a couple of patterns.

1. The last term has a positive coefficient. That rules out answer choices C and D.

2. The coefficient of the middle term is either $+2ab \text{ or } -2ab$ . So what are a and b? a is the square root of the x^2 term and b is the square root of the y^2 term.

$25x^2 \Rightarrow a=5\\\\9y^2 \Rightarrow b=3\\\\ab=15\\\\2ab=30$

The middle coefficient needs to be either +30 or -30. The answer is choice A.

5 0

2 years ago

Hown do you convert 8 inches into cm

lakkis [162]

Multiply your length value by 2.54. One inch is equal to roughly 2.54 centimeters,

Its 20.32 cm btw.

7 0

2 years ago