Use the quadratic formula to solve the quadratic equation. Approximate the solutions to the nearest tenth.2x2 + 10x = -4
A. 0.4, 4.6
B. -7.1, -2.9
C. -4.6, -0.2
D. -4.6, -0.4
Answer: D
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Add.(7 + 3n6 - 2n3) + (9n6 + 9n3 - 5)
A. 21n9 B. 16n6 + 12n3 - 7 C. 12 + 7n6 + 2n3 D. 12n6 + 7n3 + 2
In a suspension bridge, the shape of the suspension cables is parabolic. The bridge shown in the figure has towers that are 800 m apart, and the lowest point of the suspension cables is 200 m below the top of the towers. Find the equation of the parabolic part of the cables, placing the origin of the coordinate system at the lowest point of the cable.
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NOTE: This equation is used to find the length of the cable needed in the construction of the bridge.
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What will be an ideal response?
Convert the length as indicated.21.4 miles to yards
A. 256.8 yd B. 37,664 yd C. 64.2 yd D. 112,992 yd
Convert the number to scientific notation.808.14
A. 8.0814 × 101 B. 8.0814 × 10-2 C. 8.0814 × 102 D. 8.0814 × 10-1