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Lelu [443]
2 years ago
5

Please help I will give brainliest.

Mathematics
2 answers:
egoroff_w [7]2 years ago
5 0

Answer: B. (2,0) and (-\frac{1}{2}, 0)

Step-by-step explanation: Try drawing a graph of it to see where the curve intersects the x-axis, or simplify it to x^2-3x-2=0, and solve for the x values.

Kay [80]2 years ago
3 0
(2,0) and (-1/2,0) is the correct answer
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Write an equivalent expression for 8x + 9
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Answer:

8+8+8+8+8+8+8+8+8.

Step-by-step explanation:

Just add 8 nine times.

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3 years ago
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5 less than the quotient of a number y and 2
Marta_Voda [28]
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The figure à shown on ancient coin which was once used in china.the coin is in the shape of a circle of radius 3cm with a square
lianna [129]

Answer:

(1) 2π - x² = 0 (2) x = 2.5 cm (3) perimeter = 10 cm

Step-by-step explanation:

(1)The area of the circular coin without the inner square removed is πr² where r = 3 cm is the radius of the coin. So, the area of the coin without the inner square removed is πr² = π(3 cm)² = 9π cm²

The area of the square of x sides removed from its center is x².

The area A of the each face of the coin is thus A = 9π - x²

Since the area of each face of the coin A = 7π cm²,

then

7π = 9π - x²

9π - 7π - x² = 0

2π - x² = 0

(2) Solve the equation 2π - x² = 0

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x = ±√(2π)

x = ± 2.51 cm

Since x cannot be negative, we take the positive answer.

So, x = 2.51 cm

≅ 2.5 cm

(3) Find the perimeter of the square

The perimeter of the square, p is given by p = 4x

p = 4 × 2.51 cm

= 10.04 cm

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8 0
3 years ago
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Then f(m) + g(m) = 2m^2 + 32m + 160 + 50  

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