Negative 4 minus positive nine

Answers

Answer 1

Answer:

Answer: -13

Step-by-step explanation: -4 - 9 = -13

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Last year, the school library had a total of x books. Over the summer, the library acquired another 42 books and now has a total of 2,402 books. Which equation could be used to find x, the number of books the library had last year?A.2,402 + x = 42
B.x + 42 = 2,402
C.42x = 2,402
D.x - 42 = 2,402

Answers

B.x + 42 = 2,402 letter b

A lawyer to charge her clients $310 per hour. Her new rate is $260 per hour. What was the percent of decrease in the billing rate?

Answers

Answer:

119.23%

Step-by-step explanation:

310/260=1.192307692307692 ---> 1.19.23%

Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 5x − 4 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4 = 0 D. x2 + 6x + 9 = 0 Reset

Answers

Answer:

Option A

Step-by-step explanation:

We can try to factorize all the options one by one.

For A:

$x^(2) +5x-4\n=> x^(2)+4x+x-4\n=>x(x+4)+1(x-4)$

We can see that the quadratic expression cannot be solved by factorization as the factors at the end of factorization are not equal in both brackets. So Option A is the correct answer for the given question.

Moreover we can also note that all the other quadratic expressions can be factorized ..

Answer:

x2 + 5x − 4 = 0

Step-by-step explanation:

Find the Pythagorean Triple (a,b,c) using the terms (x²-1, 2x, x²+1) for x > 0 when x =7.Find the Pythagorean Triple (a,b,c) using the terms (x²-y², 2xy, x²+y²) for x > y > 0 when x = 10 and y = 6.

Answers

1) 7^2-1=48
2x7=14
7^2+1=50
=(48,14,50)
2)10^2-6^2=64
2x10x6=120
10^2+6^2=136
=(64,120,136)

If it is 2 degrees outside and the temperature will drop 15 degrees tonight , how cold will it get?

Answers

-13 Just do 2-15 or put it on a numeral line

Final answer:

The temperature will drop 15 degrees tonight, resulting in the temperature being 13 degrees below zero.

Explanation:

To find out how cold it will get, we need to subtract the temperature drop from the current temperature.

In this case, the current temperature is 2 degrees and the temperature will drop 15 degrees. So, we can calculate: 2 - 15 = -13.

Therefore, it will get 13 degrees below zero tonight.

Learn more about Temperature drop here:

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What is the best estimate for 12 2/3 - 9 1/10

Answers

12 2/3 is approximately 12.67, so we can round this up to 13.

9 1/10 is 9.1, so we can round this down to 9.

13 - 9 = 4

So 4 is our estimated answer.

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