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pochemuha
3 years ago
12

You earned a 90% on my science test you answer 18 questions correctly how many questions were on the test

Mathematics
2 answers:
Gre4nikov [31]3 years ago
3 0
90% x 18 = 16.2 

Therefore, you answered about 16 questions correctly out of 18. 
valkas [14]3 years ago
3 0
Divide 18 by the score in decimal form .9 to get 20
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A cross section is made by the intersection of a plane and a square pyramid at an angle either parallel or perpendicular to the
alukav5142 [94]
A cross section is the two dimensional shape that is created when a slice is made through a solid figure by an intersection of a plane and the solid body.

A square pyramid is a pyramid with a square base.

Case 1: When the plane intersects the square pyramid at an angle perpendicular to the base but not through the vertex. In this case a trapezoid is formed.

Case 2: When the plane intersects the square pyramid at an angle perpendicular to the base and through the vertex. In this case a triangle is formed.

Case 3: When the plane intersects the square pyramid at an angle parallel to the base. In this case a square is formed.

<span>Therefore, a cross section made by the intersection of a plane and a square pyramid at an angle either parallel or perpendicular to the base can be of shapes:

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8 0
3 years ago
Read 2 more answers
Anastasia is grocery shopping with her father and wonders how much shopping is left to do. "We already have 60 percent of the it
Ilia_Sergeevich [38]
Hi

Left to do 40% of the shopping

12 items ⇒ 60% of the items
x items ⇒ 40% of the items

60x = 12(40)
60x = 480
x = 480/60
x = 48/6
x = 8 items 

Answer:

Left 8 items of the list (40% of the shopping)

Items: 12+8 = 20 items on her list
4 0
3 years ago
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9.54
damaskus [11]

Answer:

9.5

Step-by-step explanation:

7 0
2 years ago
Which ordered pair (x, y) satisfies the system of equations? 1/2 x − 1/4 y = 10 1/8 x − 1/8 y = 19
zlopas [31]

Answer:

-36,-192

Step-by-step explanation:

5 0
2 years ago
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Answer:

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Step-by-step explanation:

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