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2 years ago

Explain how 2 ones is the same as 20 tenths.

Mathematics

2 answers:

alexgriva [62]2 years ago

7 0

10 tenths is equal to 1 and do x2 and you'll get 2 and also 20 tenths

iogann1982 [59]2 years ago

3 0

2+2=4-1=3 quick maths

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4 whols and 4/5 divided by 4/5

Andre45 [30]

Answer:

Step-by-step explanation:

4 $\frac{4}{5}$ ÷ $\frac{4}{5}$

= $\frac{24}{5}$ ÷ $\frac{4}{5}$

= $\frac{24}{5}$ * $\frac{5}{4}$

= $\frac{120}{20}$

= 6

5 0

2 years ago

Which of the following equations have complex roots?

mestny [16]

Answer:

Step-by-step explanation:

Complex roots of quadratic functions occur when the discriminant is negative.

Discriminant

$b^2-4ac\quad\textsf{when}\:\:ax^2+bx+c=0$

Evaluate the discriminant of each of the given equations.

$\textsf{A.} \quad 3x^2+2=0$

$\implies a=3, \quad b=0, \quad c=2$

$\implies b^2-4ac=0^2-4(3)(2)=-24$

As -24 < 0 the equation will have complex roots.

$\textsf{B.} \quad 2x^2+1=7x$

$\implies 2x^2-7x+1=0$

$\implies a=2, \quad b=-7, \quad c=1$

$\implies b^2-4ac= (-7)^2-4(2)(1)=41$

As 41 > 0 the equation does not have complex roots.

$\textsf{C.} \quad 3x^2-1=6x$

$\implies 3x^2-6x-1=0$

$\implies a=3, \quad b=-6, \quad c=-1$

$\implies b^2-4ac=(-6)^2-4(3)(-1)=48$

As 48 > 0 the equation does not have complex roots.

$\textsf{D.} \quad 2x^2-1=5x$

$\implies 2x^2-5x-1=0$

$\implies a=2, \quad b=-5, \quad c=-1$

$\implies b^2-4ac=(-5)^2-4(2)(-1)=33$

As 33 > 0 the equation does not have complex roots.

Learn more about discriminants here:

brainly.com/question/27444516

brainly.com/question/27869538

Learn more about complex roots here:

brainly.com/question/26344541

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1 year ago

Zab is x years old now. What is his age 7 years from now ?

kakasveta [241]

Answer:

x + 7

Step-by-step explanation:

N/A

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3 years ago

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pickupchik [31]

Answer: sure

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Equalivent fraction of 2/3

LiRa [457]

2/3 could equal 4/6 , 6/9, 8/12 , 10/15 , 12/18 ETC

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2 years ago

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