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valentina_108 [34]
3 years ago
11

What number can you multiply by −2√ to get a rational number?

Mathematics
1 answer:
Wewaii [24]3 years ago
3 0

Answer:

the square root of 2 times the negative square root of 2 would be -2, which is a rational number.


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a 6-pack of undershirts costs 13.98.this is 3.96 less than the cost of buying 6 individual shirts.if each undershirt costs the s
Sedaia [141]
2.99
I got this answer by adding 13.98+3.96=17.94. I divided 17.94÷6 and got 2.99. So, if a undershirt was purchase individualy, it will cost 2.99
7 0
3 years ago
If f(x)=x2+1, then (f∘f)(x)=
PSYCHO15rus [73]

The resulting composite function (f∘f)(x) is x⁴+2x²+2

When a function is written inside another function, it is known as a composite function

Given the function f(x)=x²+1,

(f∘f)(x) = f(f(x))

f(f(x)) = f(x²+1)

This means we will need to replace x with x²+1 in f(x) as shown:

f(x²+1) = (x²+1)²+1

Expand

f(x²+1) = x⁴+2x²+1+1

f(x²+1) =  x⁴+2x²+2

Hence the resulting composite function (f∘f)(x) is x⁴+2x²+2

Learn more here: brainly.com/question/3256461

3 0
2 years ago
Which fraction is equal to 12%
allochka39001 [22]

Answer:

3/25

Step-by-step explanation:

Simplify the fraction by using common factors of numerator and denominator. Now, 12% can be written as 12/100.

4 0
2 years ago
Factorise completely:<br> 1. 3xy - x<br>2. 4a² - 9​
Amanda [17]

Answer:

x(3y - 1) and (2a - 3)(2a + 3)

Step-by-step explanation:

(1)

3xy - x ← factor out x from each term

= x(3y - 1)

(2)

4a² - 9 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , then

4a² - 9

= (2a)² - 3²

= (2a - 3)(2a + 3)

6 0
2 years ago
What's 4.3 rounded to the nearest tenth
kolezko [41]
The answer would be 4.0
4 0
3 years ago
Read 2 more answers
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