Here's my answer to your other one
Question 1(Multiple Choice Worth 1 points)
(05.05 MC)
Find the area of a triangle with a base length of 6 units and a height of 7 units.
That's (1/2) b h = (1/2)(6)7 = 21 units
last chioce
Question 2(Multiple Choice Worth 1 points)
(05.02 LC)
How many unique triangles can be made when one angle measures 90° and another angle is half that measure?
Depends how we count. We can make as many as we like, and they're all similar. They're all 45/45/90 isosceles right triangles. But they're not necessarily congruent, we can draw different sizes, so I'll go with
More than 2
Question 3(Multiple Choice Worth 1 points)
(05.05 LC)
A right rectangular prism is shown.
What shape best describes the cross section cut parallel to the base of a right rectangular prism?
A right rectangular prism is a fancy word for a box. The parallel cross section will be a
Rectangle
Question 4 (True/False Worth 1 points)
(05.02 LC)
You can draw a quadrilateral with two sets of parallel lines and no right angles.
True. Most parallelograms are like this.
Question 5(Multiple Choice Worth 1 points)
(05.04 MC)
The seventh-grade class is building target areas for a PE activity. The bases for the game will be circular in shape. The diameter of each circle is 5 feet. Approximately how many square feet of the turf need to be painted for a base circle? Use 3.14 for π and round your answer to the nearest tenth.
Area = pi r^2 = pi (d/2)^2 = pi/4 d^2 = 3.14/4 * 5*5 = 19.625
19.6 square feet
Question 6(Multiple Choice Worth 1 points)
(05.05 MC)
Shyla covered a box with fabric. The dimensions of the box are shown in the figure below:
A rectangular prism is shown. The length of the rectangular prism is labeled as 11 inches, the height is labeled as 7 inches, and the width is labeled as 8 inches.
Cost * Surface area is 7 * 2 (11(7)+11(8)+7(8)) =3094 cents =
$30.94
Question 7(Multiple Choice Worth 1 points)
(05.01 MC)
Kathy was building a bed for her dollhouse. She used her bed, which is 3 feet × 5 feet, as a guide. She scaled down the dimensions of her bed by a factor 1 over 5. What are the dimensions of the model bed she built?
3/5 feet by 1 f
eet or
0.6 ft by 1 ft, last choice
Question 8(Multiple Choice Worth 1 points)
(05.02 LC)
Find the measure of angle x in the figure below:
Two triangles are shown such that one triangle is inverted and share a common vertex. The lower triangle has two angles at the base marked as 65 degrees each. The angle at the vertex of the inverted triangle at the top is marked as x degrees.
Those are opposite angles I'll guess, so congruent, so 180-65-65=50 degrees.
50°
Question 9(Multiple Choice Worth 1 points)
(05.01 LC)
Judith is digging for sandstone at a geological site. She has 160 meters of rope and 4 stakes to mark off a rectangular area. Which set of dimensions will create a rectangle using all the rope Judith has with her?
The perimeter p is twice the sum of the sides
16 m × 10 m
p = 2(16+10)=52 not 160 NOPE
80 m × 80 m
p = 2(80+80)=2(160)=320 nope
65 m × 10 m
p=2(65+10)=150 nope
70 m × 10 m
p=2(70+10)=160 CHOOSE THIS ONE
Question 10(Multiple Choice Worth 1 points)
(05.04 MC)
At a school carnival, the diameter of the mat of a trampoline is 10 feet and the diameter of its metal frame is 12 feet. What is the length, in feet, of the metal frame that surrounds the trampoline? Use 3.14 for π and round your answer to the nearest tenth.
The circumference of the
frame is pi times its diameter 12(3.14)=37.68 feet
37.7 feet
last choice
Question 11(Multiple Choice Worth 1 points)
(05.02 MC)
Find the measure of angle x in the figure below:
A triangle is shown. At the top vertex of the triangle is a horizontal line aligned to the base of the triangle. The angle formed between the horizontal line and the left edge of the triangle is shown as 56 degrees, the angle formed between the horizontal line and the right edge of the triangle is shown as 51 degrees. The angle at the top vertex of the triangle is labeled as y, and the interior angle on the right is labeled as 72 degrees. The interior angle on the left is labeled as x.
We have 56+y+51=180 or y=180-107=73
We have x+y+72=180 or x=180-72-73=35
35°
