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rusak2 [61]
3 years ago
13

If three times a number plus four is no more than four times the number minus one, which of the

Mathematics
2 answers:
pychu [463]3 years ago
6 0
The number is at least 5
VikaD [51]3 years ago
6 0

Answer:

Step-by-step explanation:

3z+4≤4z-1

3z-4z≤-1-4

-z≤-5

z≥5

sol.

The number is at least 5

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Calculate the above formula, expressing the answer in scientific notation with the correct number of significant figures
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Billy is making an ice-cream sundae.
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the jars of paint in the art room have different amounts of paint the green paint jar is 4/8 School the purple paint jar is 4/6
s344n2d4d5 [400]
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3 years ago
Andrea made a replica of the Empire State Building. The surface area of the model is 45 ft2. What is the surface area of the act
melamori03 [73]

Answer:

<u>87,120 ft²</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Surface area of the Empire State building replica = 45 square feet

Scale factor = 44

2. What is the surface area of the actual Empire State Building in square feet?

For answering the question, we will make the following calculations:

45 square feet = 9 feet * 5 feet or,

45 square feet = 10 feet * 4.5 feet, or,

45 square feet = 20 feet * 2.25 feet.

Now, let's apply the scale factor to all of these probable lengths of the sides of the surface area of the replica, as follows:

(9 *44) * (5 * 44) = 396 * 220 = 87,120 ft²

(10 * 44) * (4.5 * 44) = 440 * 198 = 87,120 ft²

(20 * 44) * (2.25 * 44) =  880 * 99 = 87,120 ft²

<u>As we proved, no matter what are the lengths of the sides of the surface area of the replica. after applying the scale factor, the result is the same: 87,120 ft²</u>

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.55*X=231 .....X=231/.55.......X= 420
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3 years ago
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