MATHEMATICS HIGH SCHOOL

Jasmine sold half of her Barbie doll Collectionand then bought 9 dolls. She now has 13 dolls.
Barbie dolls did she begin with?
How many

Answers

Answer 1
Answer: Answer: 8 dolls.

Explanation: 13 - 9 = 4, 4 x 2 = 8.

Work the equation backwards... she has bought 9 extra dolls to add on the the half of her original amount. Without the extra 9 dolls (13 - 9), Jasmine has half of her original amount left (4) and so to find the original amount of dolls, think that if 4 is half the amount, what is 4 half of? 4 is half of 8 and so 8 is the original amounting dolls she had.

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What is (2x^2+6x-3) added to (2x^3-3x+2)?

Answers

2x^3 + 2x^2 + 3x - 1   would be result 
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Combine like terms

2x³ + 2x² + 6x - 3x - 3 + 2

Final answer:
2x³ + 2x² + 3x - 1

If 4/5 x blank = 2/5 what is blank

Answers

(4)/(5) \cdot x = (2 )/(5) \ \ /\cdot 5\n \n \not5^(1)\cdot (4)/(\not5^(1)) \cdot x =\not5^(1 ) \cdot (2 )/(\not5^(1))\n \n4x=2 \ \ /:4 \n \nx=(2)/(4)\n \nx=(1)/(2)
(4)/(5)\cdot\fbox{\ }=(2)/(5)\ \ \ \ /\cdot(5)/(4)\n\n(\not5^1)/(\not4_1)\cdot(\not4^1)/(\not5_1)\cdot\fbox{\ }=(\not5^1)/(\not4_2)\cdot(\not2^1)/(\not5_1)\n\n\fbox{\ }=(1)/(2)

Greatest common factor of 126

Answers

Answer:

1

Step-by-step explanation:

PLEASE ANSWER + BRAINLIEST!!Factor completely.

x^2 - x - 30 =

2m^2 - 2m - 60 =

Answers

Looking at x^2 - x - 30, we see that 5*6=30, so we can immediately conclude that x^2 - x - 30 = (x+5)(x-6).  check this by multiplication.

2m^2 - 2m - 60 can be reduced to 2(m^2 - m - 30), which in turn can be factored as    2(m+5)(m-6).  The trick here is to notice how easily "2" can be factored out of the given equation.

1.4.35 Determine Whether The Pair Of Lines Is Parallel, Perpendicular, Or Neither. Y= 8/11X+1 Y= (-11)/8X+1

Answers

Answer:       They are perpendicular.

Step-by-step explanation:

Our task is to answer the following question?

Are the following lines parallel, perpendicular, or neither?

\sf{y=\cfrac{8}{11}x+1}                 \sf{y=-\cfrac{11}{8}x+1}

Main idea:

  • Parallel lines have the same slope.
  • Perpendicular lines have slopes that are opposite reciprocals of each other.

The lines have slopes that are opposite reciprocals; therefore, they're perpendicular.

Rewrite the multiplication problem using improper fractions.

1 5/6 x 2

Answers

22/6 is the result of the product of the expression.

Multiplication problem using improper fractions.

To rewrite the multiplication problem using improper fractions, we need to convert the mixed number 1 5/6 to an improper fraction.

1 5/6 = 11/6

Now, the multiplication problem can be expressed as:

1 5/6 x 2= 11/6 x 2

1 5/6 x 2 = 22/6

Therefore, the multiplication problem, using improper fractions, is 22/6

Learn more on multiplication of fraction here: brainly.com/question/30391645

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you'll convert 1 5/6 by multiplying the denominator to the whole number (6) then add the numerator 6 + 5 = 11. So the answer is

11/6 x 2 
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