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coldgirl [10]
3 years ago
5

What number can you add to √7 to get a rational number?

Mathematics
1 answer:
Oduvanchick [21]3 years ago
4 0
The only number you can add to √7 to get a rational number is a-√7 where a is any rational number.
So if a=0 the answer is -√7, option answer 1.
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5x-2=3x+8 must find what X is equal to
serious [3.7K]
I had homework on this today lol

First, add 2 to both sides. It would then be 5x = 3x + 10. Then subtract 3x from both sides and you would end up with 2x = 10. Divide 2x by 2 and the 10 by 2. The answer is x = 5.
6 0
3 years ago
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Complete the equation to represent finding x, the greater integer.<br><br> x(x – ) = 143
mart [117]

Answer:

x would equal -11 or 13

Step-by-step Explanation:

x(x - 2) - 143 = 0

x^2 - 2x - 143 = 0

-2x + x^2 = 143

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(x - 13)(x + 11)

x - 13 = 0

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3 0
3 years ago
​ f(1)=72 f(n)=f(n−1)+9 ​ Find an explicit formula for f(n)
myrzilka [38]

a_{n} = 9n + 63

generate the first few terms using the recursive equation

f(1) = 72

f(2) = 72 + 9 = 81

f(3) = 81 + 9 = 90

f(4) = 90 + 9 = 99

the sequence is 72, 81, 90, 99, .....

This is an arithmetic sequence whose n th term formula is

a_{n} = a_{1} + (n - 1 )d

where a_{1} is the first term and d the common difference

d = 99 - 90 = 90 - 81 = 81 - 72 = 9 and a_{1} = 72

a_{n} = 72 + 9(n - 1) = 72 + 9n - 9 = 9n + 63 ← explicit formula


8 0
3 years ago
Which is 9.5 expressed as a fraction in simplist form​
stealth61 [152]

Answer:

9 1/2

Step-by-step explanation:

9 and a half

6 0
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VikaD [51]
\left[x \right] = \left[ -18\right][x]=[−18]equation of a line that is parallel
4 0
3 years ago
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