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Alex777 [14]
2 years ago
15

If anna's test grades 66, 90, and 99, what is her test average?

Mathematics
1 answer:
Maksim231197 [3]2 years ago
5 0

Answer:

85

Step-by-step explanation:

Average calculator

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A. Describe a dilation (center and scale factor) that transforms triangle RST into triangle R'S'T' or explain why it cannot be d
Len [333]
To find the center of enlargement, draw a line that connects corresponding vertices, as shown below. 

The transformation that map RST to R'S'T' is an enlargement with scale factor of  3 and center of (0,0)

4 0
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Simplifying fractions what is 27 over 81
MrRa [10]

Answer: 1 over 3

Step-by-step explanation:

81 divided by 27 is 3

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3 years ago
Use the right triangular prism to find the total surface area of the prism. Leave label off answer.
9966 [12]

Step-by-step explanation:

the total surface area is the sum of the 5 individual areas in the surface :

2 triangle sides (left and right).

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1 rectangle floor

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to get the length of the baseline (Hypotenuse) of the right-angled triangles on the side. we use Pythagoras

c² = a² + b²

where c is the Hypotenuse (the side opposite of the 90° angle).

c² = 3² + 4² = 9 + 16 = 25

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so, now, we have everything we need.

the area of a triangle side (since it is right-angled) :

4×3/2 = 6

2 sides, that makes 12

the area of the back side

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the area of the floor

6×4 = 24

the area of the inclined front side

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so, the total surface area is

12+18+24+30 = 84

4 0
2 years ago
|x-11|= 5x +10 how do I solve this
stiks02 [169]

the absolute value of anything is a positive number so

lx-11l= 5x+10

x+11=5x+10

-x -x

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1/4=4x/4

1/4=x

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4 0
4 years ago
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Joyce is making sushi rolls. She needs cup of
vlada-n [284]

Answer:

She can make 3 sushi rolls.

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it's not that hard, but ok

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8 0
3 years ago
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