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snow_tiger [21]
3 years ago
5

1. the sum of two rational numbers is always always a (irrational number / rational number)

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0

One

The sum of two rational numbers is always rational. sqrt(9) + sqrt(25) = 3 + 5 which is rational. sqrt(16/100) = 4/10 = 2/5 is also rational. 3/28 is rational as well.

Two

Those are irrational. sqrt(10) + pi = ???? You cannot reduce this to any kind of fraction. Two irrationals always give a rational.

Three

The irrational number controls the answer. 10 + sqrt(5) is irrational. The 10 is OK. It is raional, but sqrt(5) is not a rational number.

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9. The sum of 10 and 7 times a number is 59. What is the<br> number? (Use n as the variable.)
PSYCHO15rus [73]
10+7n=59
7n=59-10
7n=49
n=49/7
n=7
4 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%5Csqrt%7B8%7D%2B%5Csqrt%7B18%7D-%5Csqrt%7B32%7D" id="TexFormula1" title="\sqrt{8}+\sqrt{18}-\
eduard

√8+√18−√32
√2^2·2+√3^2·2−√2^4·2
√2^ 2·√2+√3^2·√2−√2^4·√2


√2 is the answer
7 0
3 years ago
a teacher asked 3 pupils to choose any 2 digit number square it and then find the remainder after dividing the result by 7. Dori
gizmo_the_mogwai [7]
First write out all the two digit square numbers

4² = 16
5² = 25
6² = 36
7² = 49
8² = 64
9² = 81

Next divide all of them by 7

16/7 = 2 2/7 or 2 and 2 remainders
25/7 = 3 4/7 or 3 and 4 remainders
36/7 = 5 1/7 or 5 and 1 remainder 
49/7 = 7
64/7 = 9 1/7 or 9 and 1 remainder
81/7 = 11 4/7 or 11 and 4 remainders

This tells us that the only possible remainders for a two digit square number divided by 7 are 1, 2 and 4
If Doris got 6 and Horace got 3, they must have made a mistake.
4 0
2 years ago
4. Write -4.83 as a mixed number.<br> what is 8.3 in its simplest form
Black_prince [1.1K]

Answer:

-4  83/100       8 3/10

Step-by-step explanation:

4 0
3 years ago
What is -2x-x+8<br> I'm too tired to do this lol
klemol [59]
The correct answer to this would be -3x+8
5 0
2 years ago
Read 2 more answers
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