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Art [367]
3 years ago
10

(answer with "sometimes, always, or never true") A decimal number is an irrational number.

Mathematics
1 answer:
xxMikexx [17]3 years ago
7 0

Answer:

Step-by-step explanation:

Sometimes.  If the decimal never repeats itself and never ends, like pi, it is irrational.  But if the decimal is .5 or .333333333333333... it either terminates (ends) or repeats itself forever, making it rational.

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49x^2=-21x-2 quadratic functions
lara [203]

Answer: 49x^2=-21x-2 quadratic functions -1/7and -2/7    



Step-by-step explanation:

Quadratic function:

In elementary algebra, the quadratic formula is a formula that provides the solution to a quadratic equation. There are other ways of solving a quadratic equation instead of using the quadratic formula, such as factoring, completing the square, graphing and others.

Move terms to the left side

49x^{2}  =-21x-2

49x^{2}  -(-21x-2) =0

 Distribute

49x^{2}  -(-21x-2) =0

49x^{2}+21x+2=0

Use the quadratic formula



 x=(-b±√b^{2}  -4ac  ) / 2a

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

 49x^{2}+21x+2=0

let, a=49

b=21

c=2

 Replace with values in this equation

X=(-b±√b^{2}  -4ac  ) / 2a

Simplify

Evaluate the exponent

Multiply the numbers

Subtract the numbers

Evaluate the square root

Multiply the numbers

x=(-21±7) /98

Separate the equations

To solve for the unknown variable, separate into two equations: one with a plus and the other with a minus.Separate

x=(-21+7) /98

x=(-21-7) /98

Solve

Rearrange and isolate the variable to find each solution

x=-1/7

x=-2/7



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Learn more about area here https://brainly.in/question/5597925

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3 0
1 year ago
5,395<br> - 2,697<br> How do you solve?
sashaice [31]

Answer:

2698

Step-by-step explanation:First you take 1000 from 5000 and then distribute it to 395

3 0
3 years ago
Read 2 more answers
Quadrilateral ABCD is a rhombus with an area of 20 square inches.
Ugo [173]

Answer:

area of rhombus =1/2 d1×d2

20=1/2 ×10×d2

d2=4

intersection of diagonal make right angle and cut in equal parts

d1/2=10/2=5

d2/2=4/2=2

use Pythagoras in right angle to bide side

side^2= 5^2 +2^2

side = √29

8 0
3 years ago
What is the missing number ?? /6 =25/30
matrenka [14]

Answer:

5

Step-by-step explanation:

\frac{25}{30} ( divide numerator and denominator by 5 ) , then

\frac{25}{30} = \frac{5}{6} ( with missing number ? = 5 )

8 0
2 years ago
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What challenges might people living in a country or state with high concentration of subprime scores be facing as a result of th
IrinaVladis [17]

Answer:

poverty and hunger

5 0
2 years ago
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