Question

6 name each triangle based on its sides (equilateral, isosceles, or scalene) and its angles (acute, obtuse, or right). side name ______ ____ ____ angle name ____ ____ ______ 7 which choice shows 4,930? a) 3 thousands, 19 hundreds, 30 tens b) 4 thousands, 93 hundreds c) 3 thousands, 19 hundreds, 3 ones d) 4 thousands, 8 hundreds, 13 tens 8 which sentence about the rectangular shape below is not true? 9 cm 4 cm a) the perimeter is 2 x (4 cm + 9 cm) b) the area is 36 square cm c) the perimeter is (2 x 9 cm) + (2 x 4 cm) d) the area is 4 cm + 9 cm + 4 cm + 9 cm 9 what is the solution to the following expression? 48,028 - 1,473 + 9,378 10 which statement about the figure shown below is true? a) it has both acute and right angles b) it has both parallel and perpendicular line segments c) it has both obtuse angles and perpendicular line segments d) it has both acute and obtuse angles

Explanation:

Step1: Solve question 7

Calculate each option's value.

• Option a: $3\times1000 + 19\times100+30\times10=3000 + 1900+300 = 5200$.
• Option b: $4\times1000+93\times100 = 4000+9300=13300$.
• Option c: $3\times1000 + 19\times100+3\times1 = 3000+1900 + 3=4903$.
• Option d: $4\times1000+8\times100 + 13\times10=4000+800+130 = 4930$.

Step2: Solve question 8

For a rectangle with length $l = 9$ cm and width $w = 4$ cm.

• The perimeter formula is $P=2(l + w)=2\times(4 + 9)$ cm or $P=(2\times9)+(2\times4)$ cm.
• The area formula is $A=l\times w=9\times4 = 36$ square - cm. Option d is wrong as $4 + 9+4 + 9$ is the perimeter formula written in an addition - based form for a rectangle, not the area formula.

Step3: Solve question 9

First, subtract: $48028-1473=46555$.
Then, add: $46555 + 9378=55933$.

Step4: Solve question 10

A trapezoid has at least one pair of parallel sides. It can have acute and obtuse angles. It does not have right - angles or perpendicular line - segments in a general trapezoid. So, option d is correct as it has both acute and obtuse angles.

Answer:

1. d
2. d
3. 55933
4. d