3 years ago

Which symbol creates a true sentence when x equals 8?

2 answers:

8 0

To solve this equation, first replace x with its value, 8. Find 7^2 (49) and 8-4 (4). Then find 4^2 (16), and add 49 and 16 together, which is 65. Because 65 is greater than 55 by 10, the correct answer is b.

pantera1 [17]3 years ago

3 0

Answer: It would be >

because 7^2 + (8 - 4)^2 equals 65

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Which number is not written in scientific notation

Mariana [72]

Answer:

D. 15x10^20

Step-by-step explanation:

The rule for scientific notation is that the coefficient has to be between 1 and less than 10. This means there is only one digit in front of the decimal. 15x10^20 should be written as 1.5x10^21 to follow the rule.

5 0

3 years ago

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Find the value of r so the line that passes through each pair of points has the given slope.

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Answer:

r = 1

Step-by-step explanation:

slope = change in y / change in x, so:

change in y / change in x = 2/3

5 - r / 7 - 1 = 2/3

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