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Nikolay [14]
2 years ago
9

Is the solution to the quadratic equation written below rational or irrational? Justify your answer.

Mathematics
1 answer:
deff fn [24]2 years ago
8 0

Answer:

irrational

Step-by-step explanation:

It cant be square rooted perfectly.

You might be interested in
A rectange has a width of 9 units and a length of 40 unit. what is the length in diagonal
AlekseyPX

Answer:

41 units

Step-by-step explanation:

The diagonal forms a right triangle with the sides, so we can use Pythagorean theorem.

c² = a² + b²

d² = 9² + 40²

d = 41

The diagonal is 41 units long.

3 0
3 years ago
Algebraically, determine the exact value of x for the<br> equation 85(2)0.4x = 6000.
Oliga [24]

Answer: 14,575

Step-by-step explanation:

85(2) 0.4x = 6000      Multiply 85 times 2

170 + 0.4x = 6000      Subtract 170 from both sides

         0.4x = 5830       Divide 5830 by 0.4

             x = 14,575

8 0
3 years ago
How do you combine like terms of -8(r-2) + 6(r-2) ??? Will mark brainliest if the answer is right.
solmaris [256]

Answer:

-2r+4

Step-by-step explanation:

-8(r-2)+6(r-2)

Distribute:

(-8)(r)+(-8)(-2)+(6)(r)+(6)(-2)\\-8r+16+6r+-12

Combine like terms:

(-8r+6r)+(16+-12)\\-2r+4

-2r + 4 is your answer.

6 0
3 years ago
What is the surface area of the net below?<br> 4 cm<br> 7.2 cm<br> 12 cm
Ulleksa [173]

Answer: 163.2 cm^2

(4*7.2) + (7.2*12) + (12*4)

28.8 + 86.4 + 48

163.2

If that is the answer your looking for then brainliest pwease! <3

7 0
2 years ago
Why does a calculator return an error when trying to find inverse sine of 1.055?
Rashid [163]
The calculator returns an error as the answer for the inverse sine of 1.055 because the acceptable range for sine is only from 0 to 1.00 in which 1.055 is clearly greater than. This is also the same as for the cosine values. 
5 0
3 years ago
Read 2 more answers
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