Combining like terms, perimeter, average review

A triangle has side lengths of 8 cm, 14 cm, and x. The perimeter is 40 cm. Find x.

• 12 cm

• 18 cm

• 10 cm

• 14 cm

Tags

CCSS.3.MD.D.8

A triangle has two equal sides measuring 18 m each and the third side is x. If the perimeter is 65 m, find the third side.

• 16 m

• 18 m

• 29 m

• 20 m

Tags

CCSS.3.MD.D.8

The side lengths of a triangle are 4x + 2, 3x – 1, and x + 7. If the perimeter is 48 units, find x.

• 5 units

• 6 units

• 7 units

• 4 units

Tags

CCSS.8.EE.C.7B

The sides of a triangle are three consecutive even integers. The perimeter is 72 in. Find the LONGEST side.

• 22 in

• 24 in

• 20 in

• 26 in

The sides of a triangle are three consecutive even integers. The perimeter is 72 in. Find the SHORTEST side.

• 22 in

• 24 in

• 20 in

• 26 in

A triangle has side lengths of 5x, 2x + 3, and x + 9. If the perimeter is 92 cm, find x.

• 10 cm

• 9 cm

• 8 cm

• 12 cm

Tags

CCSS.3.MD.D.8

A triangle has side lengths of 3x, 2x + 5, and x + 7. If the perimeter is 150 cm, find x.

• 23 cm

• 25 cm

• 27 cm

• 30 cm

Tags

CCSS.3.MD.D.8

A triangle has side lengths of 6x - 1, 2x + 6, and x + 11. If the perimeter is 115 cm, find x.

• 11 cm

• 9 cm

• 8 cm

• 12 cm

Tags

CCSS.3.MD.D.8

The sides of a triangle are x + 4, 2x – 5, and 3x + 1. The perimeter is 30 ft. Find x.

• 5 ft

• 4 ft

• 6 ft

• 7 ft

Tags

CCSS.3.MD.D.8

A triangle has sides 10 cm, x cm, and 16 cm. The perimeter is 40 cm. Find x.

• 10 cm

• 12 cm

• 14 cm

• 16 cm

Tags

CCSS.3.MD.D.8