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Marina86 [1]
3 years ago
13

Evaluate the Expression When X=2, 3x-1=

Mathematics
1 answer:
Alex777 [14]3 years ago
4 0

Answer:

5

Step-by-step explanation:

If X equals 2, then 3 times X would be 6. This is because if a number and a variable are put together, you have to multiply them. 6-1 is 5.

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Using the numbers 5, 8, and 24, create a problem using no more than four operations (adding, subtracting, multiplication, divisi
Alik [6]

The given three numbers are 5,8,24.

We have to use four operations (Adding, Subtracting,multiplication, division, square, square root, cube, cube root) out of these operation to make the result an irrational number.

1. \sqrt{\frac{24}{8}} + 5=\sqrt{3}+5,\\\\2. \sqrt{\frac{24}{8}} - 5=\sqrt{3} -5 \\\\ 3.\sqrt{\frac{24 \times 5}{8}}=\sqrt{15} \\\\ 4. (5 \times 8 \times 24)^\frac{1}{3}

There are many more examples that you can write.

Keep in mind

1. Sum of Rational and irrational is always irrational.

2. Difference of rational and irrational is always irrational.

As none of the 5,8,24 is a perfect square , nor addition of any two results in a perfect square, so square root of their addition or subtraction  or multiplication results in an  irrational number.

Similarly ,apart from 8, none of 5,24 is a perfect cube.So if you add or subtract any number from 8 and take their cube root  or square root ,results in an irrational number.

3 0
3 years ago
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Use the graph of the parabola to identify the domain and range of the function.
LekaFEV [45]

Answer:

B

Step-by-step explanation:

It's domain is side from side and so it can't be c or d. and it range goes to a positive number so it has to be B.

8 0
3 years ago
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Andrew was making a science project for school. He worked for 6.6 hours the first week, 2.75 hours the second week, and 4.4 hour
fiasKO [112]

Answer:

Step-by-step explanation:

its wierd but 2.22

8 0
3 years ago
Solve the formula V = bh for h
mixas84 [53]

V = bh Dividing both sides by "b" we get

(V / b) = h


3 0
3 years ago
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Solve the equation. -3 - 3(1+ 3n) = -42
Mariulka [41]

Answer:2

Step-by-step explanation:

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3 years ago
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