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murzikaleks [220]
2 years ago
14

(Square root) 550. In radical expression. Please explain steps! Thank you!

Mathematics
1 answer:
Anestetic [448]2 years ago
8 0
\sqrt{550}=\sqrt{25\times22}=\sqrt{25}\times\sqrt{22}=5\sqrt{22}
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If you take 5 quizzes and get scores of 95%, 95%, 80%, 85%, and 75%, how would you find your mean quiz score?
avanturin [10]

Answer:

The answer is C.

Step-by-step explanation:

Remember, to find the mean of some scores, you must add all the scores together, then you must divide by the number of scores you added. In this case, you would divide by four, because you had four numbers you added to gether.

4 0
2 years ago
PLEASE HELP ME!!!!!!!
Gennadij [26K]
-4x < 20
Divide -4 on both sides and the x would be by itself and 20/4 = 5. Since it is a negative, the sign would switch to >
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Numbers in the solution set would be any number greater than 5
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What is the simplified form of x minus 5 over x squared minus 3x minus 10 ⋅ x plus 2 over x squared plus x minus 12?
andrezito [222]

The correct answer is C: 1/(x + 4)(x - 5)


   Why? Well, let's first simplify x^2 - 3x - 10 and x^2 + x - 12; the two denominators. Each of these should become an (x +/- number), and to figure out the number, as well as whether it is positive or negative, we can do a simple trick

Look at the factors of the right number (In this case, -10 and -12)

-10                   -12

1  * -10            1 * -12

-1 * 10             -1 * 12

-2 * 5             -2 * 6

2 * -5              2 * -6

                      -3 * 4

                       4 * -3


Now for part 2

Which of these pairs add up to the middle number? One of the pairs of -10 should make -3, and likewise, one of the pairs of -12 should make 1 (when x has no number in front of it you may safely assume it is 1).

2 - 5 = -3 and 4 - 3 = 1, so we now know that the 2 fraction equations simplified is

x + 2 / (x + 2)(x - 5) * x - 3/(x -3)(x + 4)

Notice anything repeating? As long as they are apart of the same fraction, we can cross out anything that has the same x - number. Crossing out both x + 2 and x - 3, we now simply have x - 5 * x + 4. Because we crossed out both numerators, the top numbers both become 1, thus giving our answer, C.

8 0
3 years ago
Suma, Recta, Multiplicación y División de enteros. (/ representa División)
olga_2 [115]

Answer:

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2. 56-100=44

3.-5×-9=45

4.-27/9=3

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11.1000/(-10)=100

12.-2×0=0

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15.6+(-9)=3

16.-63/7=9

17.-50×-20=1000

18.-7×-8=18

19.9-(-10)=19

20.0×-100=0

3 0
3 years ago
Read 2 more answers
Can you guys find the value of K? It's not multiple choice but these last few test questions are pretty confusing :/
Nastasia [14]

Answer:

the answer is none?

Step-by-step explanation:

vbjljs;tky[j<em>[hghutioepeoheos</em>

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