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3 years ago

The sum of a rational number and an irrational number is always irrational.

Mathematics

2 answers:

Lostsunrise [7]3 years ago

8 0

Answer:

the answer is true

Step-by-step explanation:

bonufazy [111]3 years ago

6 0

Question:

The sum of a rational number and an irrational number is always irrational.

Answer:

B.) True

Hope this helps!

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What is the reference angle for 295 degrees?

Kay [80]

A reference angle is always between 0-90. so 360-295=65deg.
Hints: 
Quadrant I angle: reference angle is same as given angle. 
Quad II: subtract angle from 180 
Quadrant III: subtract 180 from angle 
Quad IV: subtract angle from 360.

4 0

3 years ago

Read 2 more answers

A chemical company makes two brands of antifreeze. The first brand is 45% pure antifreeze, and the second brand is 95% pure anti

Dimas [21]

Answer:

42 gallons 45% antifreeze

28 gallons 95% antifreeze

Step-by-step explanation:

If x is volume of 45% antifreeze, and y is volume of 95% antifreeze, then the total volume is:

x + y = 70

And the total amount of antifreeze is:

0.45 x + 0.95 y = 0.65 (70)

Solving by substitution:

0.45 x + 0.95 (70 − x) = 0.65 (70)

0.45 x + 66.5 − 0.95 x = 45.5

21 = 0.5 x

x = 42

y = 28

7 0

3 years ago

Need answer please .......

prohojiy [21]

Step-by-step explanation:

I hope you understand it

5 0

3 years ago

(x-1/3) x (x+2/5) bang 0

meriva

Answer:

The Answer: x^2 + x / 15 - 2 / 15

6 0

3 years ago

Which equation, when solved results in a different value of x than the other three?

Talja [164]

Answer:

$-\frac{7}{8}(-\frac{8}{7})x-\frac{3}{4}=20(-\frac{8}{7})$

Step-by-step explanation:

The complete question in the attached figure

Verify each case

Part 1) we have

$-\frac{7}{8}x-\frac{3}{4}=20$

solve for x

$\frac{7}{8}x=-\frac{3}{4}-20$

$\frac{7}{8}x=-\frac{83}{4}$

$x=-\frac{83}{4}(\frac{8}{7})$

$x=-\frac{166}{7}$

Part 2) we have

$\frac{3}{4}+\frac{7}{8}x=-20$

Multiply both sides by -1 and rearrange the terms on the left side to get

$-\frac{7}{8}x-\frac{3}{4}=20$

This expression is the same that the expression in Part 1)

That means, that the equations Part 1) and Part 2) are equivalent

therefore

$x=-\frac{166}{7}$

Part 3) we have

$-7(\frac{1}{8})x-\frac{3}{4}=20$

Remember that

$-7(\frac{1}{8})x=-\frac{7}{8}x$

This expression is the same that the expression in Part 1)

That means, that the equations Part 1) and Part 3) are equivalent

therefore

$x=-\frac{166}{7}$

Part 4) we have

$-\frac{7}{8}(-\frac{8}{7})x-\frac{3}{4}=20(-\frac{8}{7})$

This equation is not equivalent to the other three, because some terms are multiplied by -8/7 and others are not. When different things are done on either side of the equal sign, it changes the equation, resulting in a different solution

6 0

3 years ago